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Question 1179342: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 13.9 years, and standard deviation of 3.7 years.
The 3% of items with the shortest lifespan will last less than how many years?
Give your answer to one decimal place.
Click here to see answer by Boreal(15235)   |
Question 1179395: Hugo gave 1/4 of his money and an additional $1 to Calvin. He gave 1/5 of the remaining money and an additional $4 to Kenneth. The amount of money Hugo had left in the end was $31 more than the amount of money he gave to Kenneth. Find the amount of money Hugo gave to Calvin.
Click here to see answer by greenestamps(13195)  |
Question 1179348: 445 411 422 455
429 475 419 441
439 434 460 454
450 425 489 417
496 458 460 454
465 479 423 491
508 456 448 446
Construct a grouped frequency distribution table (GFDT) for this data set. You want 10 classes with a "nice" class width. Your classes should be labeled using interval notation. Each class contains its lower class limit, and the lower class limits should all be multiples of the class width. In that the data appears to be discrete, use a closed-interval to label each class.
Click here to see answer by ikleyn(52752)  |
Question 1179346: 83 72 77 79
94 82 128 148
114 91 88 121
79 59 93 97
92 56 93 110
95 91 112 128
111 73 127 98
Construct a grouped frequency distribution table (GFDT) for this data set. You want 10 classes with a "nice" class width. Your classes should be labeled using interval notation. Each class contains its lower class limit, and the lower class limits should all be multiples of the class width. In that the data appears to be discrete, use a closed-interval to label each class.
Click here to see answer by ikleyn(52752) |
Question 1179423: A particular fruit's weights are normally distributed, with a mean of 287 grams and a standard deviation of 19 grams.
If you pick one fruit at random, what is the probability that it will weigh between 251 grams and 346 grams
Click here to see answer by ewatrrr(24785)  |
Question 1179422: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 13.9 years, and standard deviation of 3.7 years.
The 3% of items with the shortest lifespan will last less than how many years? (Give your answer to one decimal place.)
Click here to see answer by ewatrrr(24785) |
Question 1179567: At the start of an experiment the number of bacteria was 100. This number increases so that after t minutes the number of bacteria,N, is given by the formula N = 100 × 2^t . Estimate the number pf bacteria after 12 minutes. Estimate the time,in minutes,it takes for the number of bacteria to exceed 10 000 000.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 1179585: The value,$V, of a house n years after it was built is given by the formula V = 250000e^an. When n = 3, V = 350 000. Finde the initial value of this house. Find the value of a. Estimate the number of years for this house to double in value.
Click here to see answer by MathLover1(20849)  |
Question 1179585: The value,$V, of a house n years after it was built is given by the formula V = 250000e^an. When n = 3, V = 350 000. Finde the initial value of this house. Find the value of a. Estimate the number of years for this house to double in value.
Click here to see answer by ikleyn(52752) |
Question 1179606: I'm trying to find where the tangent line to a function is horizontal. The equation is y = e^(-sqrt(3)x)cos(x). I got the derivative, (-e^(-sqrt(3)x))(sqrt(3)cos(x)+sin(x)), and I set each factor equal to zero. The first factor has no solutions, but the solution for the second one is -pi/3. I then substituted -pi/3 into the original equation to find the y coordinate for the point where the tangent is horizontal. (I got (e^(sqrt(3)pi/3)/2 for the y coordinate).
Is this correct?
Click here to see answer by MathLover1(20849) |
Question 1179873: Yolanda places a bottle of water inside a cooler. As the water cools, its temperature in degrees Celsius is given by the following function, where is the number of minutes since the bottle was placed in the cooler.
Yolanda wants to drink the water when it reaches a temperature of degrees Celsius. How many minutes should she leave it in the cooler?
Round your answer to the nearest tenth, and do not round any intermediate computations.
Click here to see answer by mananth(16946)  |
Question 1179964: X operates a branch at Delhi. All purchases are made by the Head Office at Madras; goods being charged out to the
branch at cost price. All cash received by the branch is remitted to Madras Branch. Petty expenses are paid out of an
imprest which is reimbursed by the Head Office from time to time. From the following particulars relating to Delhi
branch, you are required to prepare Branch Account (for calculating profit) in the books of the Head Office.
Dr Cr
Particulars Amount Particulars Amount
Balances on Petty expenses paid by $700
branch out of imprest
1.1.2017: Cash sales during 70,000
Stock: $8,000 the year
Petty cash: 800 Sale of plant on 1.7.2017 800
Plant: 10,000 (Book value on the date of
Balances on 31.12.2017: sale $900)
Stock 7,000 Expenses paid by Head Office: 5,000
Goods sent to branch 50,000
It is required to write-off Plant @ 20% p.a.
Click here to see answer by ikleyn(52752) |
Question 1180039: Prices of admission are as follows
Primary 100 sh each
Secondary 200 sh each
University 400 sh each.
One day, money got from university was twice that of primary sale while four times as many as tickets sold to the secondary as to primary
If total collection of the tickets was sh 22000, find the number of tickets which were sold.
Click here to see answer by ikleyn(52752) |
Question 1180039: Prices of admission are as follows
Primary 100 sh each
Secondary 200 sh each
University 400 sh each.
One day, money got from university was twice that of primary sale while four times as many as tickets sold to the secondary as to primary
If total collection of the tickets was sh 22000, find the number of tickets which were sold.
Click here to see answer by greenestamps(13195) |
Question 1180044: Suppose you enter a contest where your probability of coming in first place is 0.21 and your probability of coming in second place is 0.24. If you come in first place, you win $55. If you come in second place, you win $35. If you don't come in first or second place, you have to pay $42. What is the expected value of this game? Round your answer to the nearest penny/cent (two decimal places).Include a negative sign, if appropriate.
Click here to see answer by ikleyn(52752) |
Question 1179898: You went bowling in two leagues. In the first league the mean bowling score is 167 with a standard deviation of 44. In the second league the mean score is 180 with a standard deviation of 35. If you bowl a game of 201 in both leagues in which league is this score the best in comparison to the other bowlers? Explain why.
Click here to see answer by ValerieDavis(6) |
Question 1180753: A food company distributes its tomato soup in two cans of different sizes. For the larger can, the diameter has been increased by 15%, and the height remains the same.
By what percentage does the volume of the can increase from the smaller can to the larger can? Round your answer to the nearest percent.
Click here to see answer by greenestamps(13195) |
Question 1180940: Joe Nedney of the San Francisco 49ers kicked a field goal with an initial velocity of 20m/s at an angle of 60∘.
a. How long is the ball in the air? Hint: you may assume that the ball lands at the same
height as it starts at.
b. What is the distance traveled by the ball before it hits the ground?
c. What is its maximum height?
Click here to see answer by ikleyn(52752) |
Question 1180228: Q−1: [4+6+8+2 Marks] consider the salaries ($) of 10 employees working for a small company.
$2100, $2200, $2300, $2400, $2600, $2700, $2700, $2800, $2900, $3000.
a) Calculate the mean, median of the salaries.
b) Find the inter-quartile range of the salaries.
c) Calculate the standard deviation of the salaries.
d) Find the range.
Click here to see answer by Boreal(15235) |
Question 1181275: please help me static101
q1 /
6 manufacturers produce a certain electronic device, whose quality varies from manufacturer to manufacturer. If you were to select 4 manufacturers at random, what is the chance that the selection would contain exactly 2 of the best 3?
q2/
A sample space S consists of 4 simple events with these probabilities:
P(E1) = 0.18, P(E2) = 0.02, P(E4) = 3P(E3) If A = {E1, E3}, B = {E2, E3}, then P(AUB)c is
q3/
There are three brands of chocolates A, B and C in a box. Brand A chocolates are 3, brand B are 4 and brand C are 5. A boy has two choose two chocolates from the box one by one. The probability that he has to choose first chocolate from brand B and second from brand C is
Click here to see answer by ikleyn(52752) |
Question 1181301: a person standing on the edge of a cliff throws a rock in the air. the path of the rock is described by the function: h(t)= -2t^2 +8t + 6, 2) where h(t) is the height in meters, above the ground and t us the time in seconds.
a) what height was the rock thrown into the air
b) determine the vertex of then function by completing the square
c) at what time does the rock reach its optimal height
d) does this this function have a maximum or minimum value? how do you know? state the max/min
e) state the rang of the function as it applies to the real-life model of the situation described.
Click here to see answer by Boreal(15235) |
Question 1181498: Direction:
1. Read carefully the problems given below.
2. Analyze the suggested solutions and find out what is wrong with them.
3. Write your solutions.
4. Write an explanation why your solution is correct.
Problem #1. An airplane is flying at constant altitude of 100 m above the ground. At that instant, it was recorded that the angle of depression of the airport is 40°. Find the horizontal distance between the airplane and the airport.
Click here to see answer by ikleyn(52752) |
Question 1181498: Direction:
1. Read carefully the problems given below.
2. Analyze the suggested solutions and find out what is wrong with them.
3. Write your solutions.
4. Write an explanation why your solution is correct.
Problem #1. An airplane is flying at constant altitude of 100 m above the ground. At that instant, it was recorded that the angle of depression of the airport is 40°. Find the horizontal distance between the airplane and the airport.
Click here to see answer by MathLover1(20849) |
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3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 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