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Question 1109281: Use a tree diagram showing all possible results when a die is rolled twice. List the ways of getting the following result.
The first die shows a 3.
I am struggling trying to figure it out
Click here to see answer by Fombitz(32388)

Question 1109419: Use technology to obtain approximate solutions graphically. All solutions should be accurate to one decimal place.
3x − y = 5
x + 3y = 5

Click here to see answer by stanbon(75887)

Question 1109432: A student walks 50m on a bearing 025� and then 200m due east.
How far is she from her starting point
Click here to see answer by Alan3354(69443)

Question 1109632: According to The World Factbook, 2004, the total fertility rate (estimated mean number of children born per woman) for Madagascar is 6.1. Suppose that the standard deviation of the total fertility rate is 3.6. The mean number of children for a sample of 211 randomly selected women is one value of many that form the SDSM.
(a) What is the mean value for this sampling distribution? (Give your answer correct to one decimal place.)
(b) What is the standard deviation of this sampling distribution? (Give your answer correct to two decimal places.)
Click here to see answer by stanbon(75887)

Question 1109688: Bill and Gina were both taking Stats classes. On his first exam, Bill scored a 79, and his class had a mean of 82 and a standard deviation of 6. On her first exam, Gina scored a 75, and her class had a mean of 85 and a standard deviation of 10.
Who scored higher, relative to their class?
Click here to see answer by Boreal(15235)

Question 1109727:
Click here to see answer by Alan3354(69443)

Question 1109750: you are dealt five cards from a standard deck of 52 cards. What is the probability of getting three tens and two cards that are not tens? (%)
Click here to see answer by stanbon(75887)

Question 1109719: The average speed of winds in a certain city equals 11 mph. Assume that wind speeds are approximately normally distributed with a standard deviation of 3.5 mph.
(a) Find the probability that the wind speed on any one reading will exceed 13.5 mph.

(b) Find the probability that the mean of a random sample of twelve readings will exceed 13.5 mph.
Click here to see answer by stanbon(75887)

Question 1109756: To win the lottery in a certain state you must correctly select 7 distinct numbers from a collection of 41 numbers (1 through 41). You will win if your numbers match the winning numbers in any order. What is the probability of winning the lottery?
Click here to see answer by jorel1380(3719)

Question 1109755: A committee is being formed from 12 republicans and 15 democrats. If a four-person committee is selected at random, what is the probability that the committee will be all democrats?
Click here to see answer by jorel1380(3719)

Question 1109758: A local grocery store offers 39 different flavors of ice cream. You ask your friend to stop and get two different pints of ice cream. What is the probability of your friend selecting chocolate and vanilla? (%)
Click here to see answer by stanbon(75887)

Question 1109757: You are dealt five cards from a standard deck of 52 cards. What is the probability of getting three eights and two cards that are not eights? (%)
Click here to see answer by JulietG(1812)

Question 1109829: From a point on level ground, the angles of elevation of the top and the bottom of an antenna standing on top of a building are 32.5˚ and 26.3˚, respectively. If the building is 136 ft. high, how tall is the antenna?
Click here to see answer by josgarithmetic(39613)

Question 1109851: Calculate the present value PV of an investment that will be worth $1,000 at the stated interest rate after the stated amount of time.
15 years, at 4.3% per year, compounded quarterly
Click here to see answer by Alan3354(69443)

Question 1109857: The local bakery bakes more than a thousand 1-pound loaves of bread daily, and the weights of these loaves varies. The mean weight is 0.9 lb. and 3 oz., or 493 grams. Assume the standard deviation of the weights is 22 grams and a sample of 30 loaves is to be randomly selected.

(b) Find the mean of this sampling distribution. (Give your answer correct to nearest whole number.)

(c) Find the standard error of this sampling distribution. (Give your answer correct to two decimal places.)

(d) What is the probability that this sample mean will be between 488 and 498? (Give your answer correct to four decimal places.)

(e) What is the probability that the sample mean will have a value less than 485? (Give your answer correct to four decimal places.)

(f) What is the probability that the sample mean will be within 3 grams of the mean? (Give your answer correct to four decimal places.)

Click here to see answer by Boreal(15235)

Question 1109855: TIMSS 2003 (Trends in International Mathematics and Science Study) focused on the mathematics and science achievement of eighth-graders throughout the world. A total of 45 countries (including the United States) participated in the study. The mean math exam score for U.S. students was 496 with a standard deviation of 92. Assume the scores are normally distributed and a sample of 157 students is taken. (Give your answers correct to four decimal places.)
(a) Find the probability that the mean TIMSS score for a randomly selected group of eighth-graders would be between 490 and 512.

(b) Find the probability that the mean TIMSS score for a randomly selected group of eighth-graders would be less than 522.

Click here to see answer by Boreal(15235)

Question 1109853: Consider a normal population with μ = 43 and σ = 5.4. Calculate the z-score for an x of 44.1 from a sample of size 16. (Give your answer correct to two decimal places.)
Click here to see answer by abdulaleem(11)

Question 1109925: The amount of fill (weight of contents) put into a glass jar of spaghetti sauce is normally distributed with mean μ = 856 grams and standard deviation of σ = 11 grams.
(e) Find the probability that a random sample of 30 jars has a mean weight between 840 and 856 grams. (Give your answer correct to four decimal places.)
Click here to see answer by rothauserc(4718)

Question 1109849: An investment earns 0.06% per week and is worth $17,000 after 15 weeks.
Find the present value PV of the given investment
Click here to see answer by jorel1380(3719)

Question 1109995: The amount of fill (weight of contents) put into a glass jar of spaghetti sauce is normally distributed with mean μ = 856 grams and standard deviation of σ = 11 grams.
(a) Describe the distribution of x, the amount of fill per jar.
skewed right
normal
skewed left
chi-square
Correct: Your answer is correct.

(b) Find the probability that one jar selected at random contains between 840 and 856 grams. (Give your answer correct to four decimal places.)

0.4265

Correct: Your answer is correct.

(c) Describe the distribution of x, the mean weight for a sample of 30 such jars of sauce.
skewed right
normal
skewed left
chi-square
Correct: Your answer is correct.

(d) Find the mean of the x distribution. (Give your answer correct to the nearest whole number.)

856

Correct: Your answer is correct.

(ii) Find the standard error of the x distribution. (Give your answer correct to two decimal places.)

2.01

Correct: Your answer is correct.

(e) Find the probability that a random sample of 30 jars has a mean weight between 840 and 856 grams. (Give your answer correct to four decimal places.)
Click here to see answer by Boreal(15235)

Question 1110004: write a polynomial equation of least degree -1,2i,-2i
Click here to see answer by josgarithmetic(39613)

Question 1109988: The position of a model train, in feet along a railroad track, is given by
s(t) = 2.5t + 18
after t seconds.
(a) How fast is the train moving?
ft/sec
(b) Where is the train after 4 seconds?
feet along the track
(c) When will the train be 33 feet along the track?
t = sec

Click here to see answer by KMST(5328)

Question 1109998: A manufacturer knows that 8% of 100 computer monitors it has in stock are defective. Three monitors are randomly selected from their stock. Find the probability is the second and first chosen are defective. (%)
Click here to see answer by Boreal(15235)

Question 1109991: A manufacturer knows that 6% of the 200 computer monitors it has in stock are defective. Three monitors are randomly selected from their stock. Find the probabilities for parts (a) through (e) below.
a. P(first monitor is defective)
(Round to the nearest tenth as needed.)
b. P(second is defective | first is defective)
(Round to the nearest tenth as needed.)
c. P(second is not defective | first is defective)
(Round to the nearest tenth as needed.)
d. P(second is defective | first is not defective)
(Round to the nearest tenth as needed.)
e. P(third is defective | first two are defective)
Click here to see answer by Boreal(15235)

Question 1109990: Joe secured a loan of $13,000 five years ago from a bank for use toward his college expenses. The bank charges interest at the rate of 3%/year compounded monthly on his loan. Now that he has graduated from college, Joe wishes to repay the loan by amortizing it through monthly payments over 12 years at the same interest rate. Find the size of the monthly payments he will be required to make.
Click here to see answer by Theo(13342)

Question 1110122: Suppose in one year, total revenues from digital sales of pop/rock, tropical (salsa/merengue/cumbia/bachata), and urban (reggaeton) Latin music in a certain country amounted to $21 million. Pop/rock music brought in twice as much as the other two categories combined and $9 million more than tropical music. How much revenue was earned from digital sales in each of the three categories?
Click here to see answer by greenestamps(13195)

Question 1110264: Determined whether the following pair of sets is equivalent.
{3, 6, 9} and {a, e, i}
A. No, the two sets do not have any of the same elements
B. No, neither set is a subset of the other
C. Yes, both sets have the same number of elements
D. Yes, both sets are subsets of larger sets
Click here to see answer by MathLover1(20849)

Question 1110260: Express the set using roster notation
The set of letters in the word �bisect�
Click here to see answer by ikleyn(52747)

Question 1110285: Prom tickets beforehand were $31 and at the door they were $40 a total of 200 tickets were sold. Total money collected for both was 6,641.00
- How many tickets were sold at the door?
Click here to see answer by josgarithmetic(39613)

Question 1110261: Calculate the number of sunsets and proper subsets for the following set:
{x / x is a side of a hexagon}

Click here to see answer by ikleyn(52747)

Question 1110294: y=x2+6x-2x+2x2-18+4

Click here to see answer by ikleyn(52747)

Question 1110294: y=x2+6x-2x+2x2-18+4

Click here to see answer by josgarithmetic(39613)

Question 1110358: if find dy/dx using first principle .
Click here to see answer by math_helper(2461)

Question 1110614: You are designing a rectangular enclosure with 8 rectangular sections separated by parallel walls. If you have 5500 feet of fencing, what is the maximum area that can be enclosed?
Click here to see answer by Boreal(15235)

Question 1110647: You are designing a rectangular enclosure with 5 rectangular sections separated by parallel walls. if you have 2200 feet of fencing what is the maximum area that can be enclosed?
Click here to see answer by stanbon(75887)

Question 1110841: How do you determine the amplitude, horizontal shift and vertical shift in: y=a (x+p)+q
Click here to see answer by Alan3354(69443)

Question 1110894: The sail on a sail boat is in the shape of a triangle. If the height of the sail is 3 times the length of base and the area is 96 square feet, find the dimensions of the sail.
Click here to see answer by josgarithmetic(39613)

Question 1110896: The sail on a sailboat is shaped like a triangle, with an area of 50 square feet. The height of the sail is 9 feet more than the base of the sail. Find the base and height of the sail.
Click here to see answer by mananth(16946)

Question 1110897: A right triangle with a hypotenuse of 40 inches has a leg that measures
32 inches. Find the length of the other leg.
Click here to see answer by ikleyn(52747)

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