(Answered) 1nbspa research concludes that the number of hours of

Statistics

1. A research concludes that the number of hours of exercise per week for adults is normally distributed w ith a mean of 4 hours and a standard deviation of 2 . 5 hours. Show all work. Just the answer, without supporting work, will receive no credit.

(a) What is the probability that a randomly selected adult has at least 5 hours of exercise per week (round the answer to 4 decimal places)

(b) Find the 75 th percentile for the distribution of exercise time per wee k . ( round the answer to 2 decimal places)

2. Assume the SAT Mathematics Level 2 test scores are normally distributed with a mean of 500 and a standard deviation of 100. Show all work. Just the answer, without supporting work, will receive no cred it.

(a) Consider all random samples of 6 4 test score s. What is the standard deviation of the sample means ? (Round your answer to three decimal places)

(b) What is the probability that 6 4 randomly selected test scores will have a mean test score that is between 4 90 and 5 20 ? (Round your answer to four decimal places)

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92594957
Price:- $20

Verified Expert

Priced at $40 Now at $20, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Sals market receives a box of jen amp barrys fast fresh

Sal's Market receives a box of Jen & Barry's Fast Fresh Salad BagsTM. Each box contains 16 Caesar salad bags, 20 tossed salad bags, and 12 shredded cabbage bags. Suppose that each type salad bag has an equal chance of be ...

37 of college students say they use credit cards because of

37?% of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that the number ...

A bond that makes payments in a certain currency contains

A bond that makes payments in a certain currency contains the risk of holding that currency and so is priced according to the yields of similar bonds in that currency.

The easy clean company just paid a dividend of 150 d0150

The Easy Clean Company just paid a dividend of $1.50 (D0=$1.50). The dividend is expected to grow at a constant rate of 8%. The required rate of return is 11.50%. What is the expected price of Easy Clean stock in Year 5 ...

Describe the scales of measurement of data that should be

Describe the scales of measurement of data that should be summarized by a measure of location such as a sample mean and a sample median? When is the sample median a better measure of location than the sample mean? Why do ...

What does the real world evidence say about the law of one

What does the real world evidence say about the law of one price?

A clothing quality director determines the accuracy of nfl

A clothing quality director determines the accuracy of NFL Logos on t-shirts. 9% of the shirts made that day are defective. The shirts are sold in packages of 10. Find the probability that in one randomly selected packag ...

Jen and barry calculate the overall cost per shift y for

Jen and Barry calculate the overall cost per shift y for "Jen & Barry's Fast Fresh Salad Bags". They determine that 20 salad bags can be produced for a total cost of $80 and that 50 salad bags can be produced for total c ...

A 1995 study by the school of public health reported

A 1995 study by the School of Public Health reported that 87?% of male students who live in a fraternity house are binge drinkers. The figure for fraternity members who are not residents of a fraternity house is 71?%, wh ...

Assume that the class consists of 45 percent freshmen 20

Assume that the class consists of 45 percent freshmen, 20 percent sophomores, 20 percent juniors, and 15 percent seniors. Assume further that 50 percent of the freshmen, 50 percent of the sophomores, 25 percent of the ju ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert