Tutors Answer Your Questions about Finance (FREE)
Question 1160297: A chemist compare the sugar contents of two brands of beverages with the same bottle sizes. Ten bottles of Brand X had an average sugar content of 3.1 grams with a standard deviation of 0.5 grams, while eight bottles of Brand Y had an average sugar of 2.7 grams with a standard deviation of 0.7 grams. We know that two sets of data are independent random samples from normal populations, and they have equal variances. Construct a 95% confidence interval for the difference (X-Y) between the mean sugar contents of the two brands of beverages. Decide which brand has a higher sugar ratio.
Click here to see answer by Boreal(15235)   |
Question 1160357: How many permutations of 2 item can be selected from a group of 4? ?
B) Use the letters A, B, C D to identify the items & list each possibility.
c) If random sampling is employed what is the probability that any particular sample will be selected
is my answer correct below ?
(4!)/(2!) = 12
B) { AB, AC, AD, BA, BC, BD, CA, CB, CD, DA, DB, DC }
Click here to see answer by MathLover1(20849)  |
Question 1160357: How many permutations of 2 item can be selected from a group of 4? ?
B) Use the letters A, B, C D to identify the items & list each possibility.
c) If random sampling is employed what is the probability that any particular sample will be selected
is my answer correct below ?
(4!)/(2!) = 12
B) { AB, AC, AD, BA, BC, BD, CA, CB, CD, DA, DB, DC }
Click here to see answer by ikleyn(52781)  |
Question 1160367: A lawyer invested a certain amount of money in a restaurant business, expecting the earnings to be 9% per year. He invested thrice the amount in a retail business, expecting the earnings to be 11% per year. If after a year, the total interest from the investment is 63,000, how much did he invest in the restaurant business?
Click here to see answer by ikleyn(52781) |
Question 1160367: A lawyer invested a certain amount of money in a restaurant business, expecting the earnings to be 9% per year. He invested thrice the amount in a retail business, expecting the earnings to be 11% per year. If after a year, the total interest from the investment is 63,000, how much did he invest in the restaurant business?
Click here to see answer by MathTherapy(10552)  |
Question 1160367: A lawyer invested a certain amount of money in a restaurant business, expecting the earnings to be 9% per year. He invested thrice the amount in a retail business, expecting the earnings to be 11% per year. If after a year, the total interest from the investment is 63,000, how much did he invest in the restaurant business?
Click here to see answer by greenestamps(13200)  |
Question 1160361: present value of an uneven stream of payments)
you are given 3 investments alternatives to analyze. the cash flows from these 3 investments are as follows.
end of year A B C
1 2000 2000 5000
2 3000 2000 5000
3 4000 2000 (5000)
4 (5000) 2000 (5000)
5 5000 5000 15,000
what is the present value of each of these 3 investments if the appropriate discount rate is 10%.
is any of these answers correct that i attempted below.
A) $25,174.10 or $6992.32
B) $25,763.40 or $9444.38
C) $56,274.40 or $10,819.86
Click here to see answer by Theo(13342)  |
Question 1160352: You have an opportunity to make an investment that will pay $100 at the end of the first year, $400 at the end of the second year, $400 at the end of the third year, $400 at the end of the fourth year, and $300 at the end of the fifth year.
a. Find the present value if the interest rate is 8 percent.
b. What would happen to the present value of this stream of cash flows if the interest rate were 0 percent?
Click here to see answer by Theo(13342) |
Question 1160383: Hi! I know I need to solve this question with the A=P(1+r/n)^nt but when I submitted my answer I got it incorrect and I'm not sure where I went wrong.
If $17900 is invested at an interest rate of 7% per year, find the value of the investment at the end of 5 years for the following compounding methods.
Annual
Semi-annual
Monthly
Daily
Continously
I got both the monthly ($25375.5) and the continously ($25401.3) answers correct but I don't know where I went wrong for annual, semi-annual, and daily.
Thank you for any help in advance.
Click here to see answer by Boreal(15235) |
Question 1160391: A researcher analyses the lifetimes of two different car tyres. A random sample of 40 tyres of type A lasted on the average 418 days of use and 50 tyres of the type B lasted on the average 402 days of use. The population standard deviations are known to be šš“=26 and ššµ=22.
a) (10 Points) Construct a 94% confidence interval for the difference (A-B) between the mean lifetimes of two kinds of car tyres and decide which one is better than the other.
b) (15 Points) Test at the 5% level the null hypothesis that the population mean for type A tyres is 400 days against the alternative that it is more than 400 days.
Click here to see answer by Boreal(15235) |
Question 1160477: When I was considering what to do with the $10,000 proceeds from my sale of technology stock, my broker suggested I invest half of it in municipal bonds, whose value was growing by 6% per year, and the other half in CDs, which were yielding 3% per year, compounded every 2 months. Assuming that these interest rates are sustained, how much will my investment be worth in 10 years?
Click here to see answer by solver91311(24713)  |
Question 1160472: 1.) How much trade discount is allowed if the catalogue list a kitchen cabinet sink at PhP 875.75 and the discount sheet shows a 16% of discount? What is the net price?
2.) A man bought a farm for PhP 32,000. Fences and other improvements cost him in addition of PhP 1, 440. How many percent of the price cost the improvements?ļæ½
Click here to see answer by ikleyn(52781) |
Question 1160397: A baseball diamond is a square with sides of length 90 ft. A batter hits the ball and runs toward first base with a speed of 22 ft/s.
1) At what rate is his distance from second base changing when he is halfway to first base?
2) At what rate is his distance from third base changing at the same moment?
Click here to see answer by solver91311(24713) |
Question 1160385: Here is a big question and I'm not even sure where to begin, any help would be greatly appreciated, thank you.
Let f(x)=eāxā7 and g(x)=ex. Consider the following actions:
(a) reflecting the graph of g(x) in the x-axis;
(b) reflecting the graph of g(x) in the y-axis;
(c) shifting the resulting graph to the right 7 units;
(d) shifting the resulting graph to the left 7 units;
(e) shifting the resulting graph upward 7 units;
(f) shifting the resulting graph downward 7 units;
The graph of f(x) can be obtained from the graph of g(x) by first doing (a or b)
followed by (c, d, e, or f)
What is the domain of the function f(x)? (interval notation)
What is the range of the function f(x)? (interval notation)
Click here to see answer by solver91311(24713) |
Question 1160502: David wants to purchase a new guitar. The cost of a guitar is $299. David has saved $42 for his new purchase. His parents are willing to give him three times what he has saved. On the weekends, David cuts lawns for $20 an hour. How many more hours will David have to work until he has enough money to purchase his guitar?
Click here to see answer by ikleyn(52781) |
Question 1160502: David wants to purchase a new guitar. The cost of a guitar is $299. David has saved $42 for his new purchase. His parents are willing to give him three times what he has saved. On the weekends, David cuts lawns for $20 an hour. How many more hours will David have to work until he has enough money to purchase his guitar?
Click here to see answer by josgarithmetic(39617) |
Question 1160419: A baseball diamond is a square with sides of length 90 ft. A batter hits the ball and runs toward first base with a speed of 22 ft/s.
At what rate is his distance from second base changing when he is halfway to first base?
Click here to see answer by math_helper(2461)  |
Question 1160545: Melanie has a $125,000 house with a $78,422 mortgage. She has $21,236 in a savings account and has $9,477 in credit card debt. She owes $6,131 to the credit union and figures that her cars and other household items are worth a total of $15,000. What is Melanieās net worth?
Click here to see answer by Theo(13342) |
Question 1160585: From a very large population (normally distributed), a random sample of 8 students had taken. Following table shows studentsā grades for an exam before the term starts and another exam right after the term.
Student Before-Term Exam After-Term Exam 1 75 80
2 85 70
3 65 55
4 45 65 5 55 65 6 60 70 7 70 80 8 80 60
a) (10 Points) Find a 95% confidence interval estimate of the mean improvement in the scores. Do you think that lectures during the term help to improve student grades?
b) (15 Points) Test the hypothesis at the 5% significance level that the population mean grade for After-Term Exam is at least 70.
Click here to see answer by Boreal(15235) |
Question 1160600: Oboe a recent retiree, requires Ghc 6000 per year in extra income. She has Ghc 50000 to invest and can invest in B-rated bonds paying 15% per year or in a certificate of deposit (CD) paying 7% per year. How much money should Oboe invest in each to realize exactly Ghc 6000 in interest per year?
Click here to see answer by ikleyn(52781) |
Question 1160600: Oboe a recent retiree, requires Ghc 6000 per year in extra income. She has Ghc 50000 to invest and can invest in B-rated bonds paying 15% per year or in a certificate of deposit (CD) paying 7% per year. How much money should Oboe invest in each to realize exactly Ghc 6000 in interest per year?
Click here to see answer by greenestamps(13200) |
|
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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
|
