Question: A population has a mean =78 and a standard deviation = 7 . Find the mean and standard deviation of a sampling distribution of sample

A population has a mean =78and a standard deviation =7.

Find the mean and standard deviation of a sampling distribution of sample means with sample size n=49.

Assume the random variable x is normally distributed with mean=50 and standard deviation =7. Find the indicated probability.

P(x>36)

People were polled on how many books they read the previous year. How many subjects are needed to estimate the number of books read the previous year within one book with 95%confidence? Initial survey results indicate that =11.1 books.

Construct the indicated confidence interval for the population mean using at-distribution. c=0.99,x=111, s=10, n=15

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

In a population of size n=5 consisting of the age of each of them who are patients in ahospital. The age of each of them is given as x1=5, x2=7, x3=9, x4=11, x5=13. (i) List all possible samples of...

QUESTION 27 A population has a mean =76 and a standard deviation =7. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=49. x=______ (SIMPLIFY YOUR...

A population has a mean =80 and a standard deviation =7. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=49.

A population has a mean =78 and a standard deviation =30. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=246. mean standard deviation

A population has a mean = 78 and a standard deviation ? =27. Find the mean and standard deviation of a sampling distribution of sample means with sample size n= 81.

A population has a mean = 90 and a standard deviation = 7. Find the mean and standard deviation of a sampling distribution of sample means with sample size n = 49. H(Simplify your answer.)

A Population has a mean =132 and a standard deviation 23 find the mean and standard deviation of the sampling distribution of sample means with sample size n=54 point(s) possible A population has a...

A)Construct the indicated confidence interval for the population mean mu using the t-distribution c=0.95, x-overbar=12.7, s=2.0, n=9 The 95% confidence interval using a t-distribution is ( , ) B)A...

1.)Find the range of the data set represented by the graph. 70 75 80 85 90 95 100 x A dot plot has a horizontal axis labeled from 70 to 100 in increments of 1. The graph consists of a series of...

A population has a mean =81 and a standard deviation =9. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=81. Question content area bottom Part 1 x=...

In a city having a fixed population of P persons, the time rateof change of the number N of those people who have heard a certainrumor is proportional to the number of those who have not yet heardthe...

A small printed-circuit board manufacturer has established itself on the ability to supply a large variety of small orders in a timely manner. A firm approaches the manufacturer to place a large...

CK Inc., will issue new 1 5 - year, $ 1 , 0 0 0 par value, 9 % annual coupon bonds. The market price of the bonds is $ 1 , 0 0 0 each, and the flotation cost is $ 5 0 per bond. What is the before tax...

2023 1040 form 1.Phillip and Claire are married and file a joint return. Phillip is self-employed as a real estate agent, and Claire is a flight attendant. Phillip and Claire have three dependent...