Question: Find the sample size needed to estimate the mean age of movie patrons such that it can be said with 90% confidence that the sample

Find the sample size needed to estimate the mean age of movie patrons such that it can be said with 90% confidence that the sample mean is within 3 years of the population mean. Assume that standard deviation is 19.1 years, based on a previous report. could the sample be obtained from one movie at one theater ?

Step by Step Solution

★★★★★

3.47 Rating (150 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Solution Given that standard deviation sigma 191 m... View full answer

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 Accounting Questions!

Find the sample size needed to estimate the percentage of robberies in Texas that result in arrests. Use a 0.04 margin of error, use a confidence level of 80%, and assume that pn and qn are unknown.

The sample size needed to estimate the difference between two population proportions to within a margin of error E with a confidence level of 1 - a can be found as follows. In the expression Replace...

Republicans Find the sample size needed to estimate the percentage of Republicans among registered voters in California. Use a 0.03 margin of error, use a confidence level of 90%, and assume that pn...

Many primary care doctors feel overworked and burdened by potential lawsuits. In fact, the Physicians' Foundation reported that 60% of all general practice physicians in the United States do not...

Consider the probability distribution of the weekly demand for copier paper (in hundreds of reams) used in a corporations duplicating center, as shown in the file S04_58.xlsx. a. Use simulation to...

Is a dog mans best friend? One would think so, with 60 million pet dogs nationwide. But how many friends are needed? In the American Pet Products Associations 20072008 National Pet Owners Survey, the...

Americans snooze more on the weekends, according to a poll of 1506 adults for the National Sleep Foundation and reported in a USA Today Snapshot during April 2005. Two independent random samples were...

In addition to the commute time (in minutes), the Commute Atlanta dataset gives the distance for the commutes (in miles) for 500 workers sampled from the Atlanta metropolitan area. (a) Find the mean...

In Exercise 6.10, we learn that the percent of free throws made in the NBA (National Basketball Association) has been about 75% for the last 50 years. If we take random samples of free throws in the...

In Exercise 11.118, we discuss the random variable counting the number of seniors in a sample of four undergraduate students at a university, given that the proportion of undergraduate students who...

Carla Vista Company has a September 30 fiscal year end and prepares adjusting entries on an annual basis. The trial balance included the following selected accounts: Accumulated depreciation $4,650...

ANSWER WITH SOLUTION: 1.The statement of financial position of A, B, C partnership as of December 31, 2020 is presented below:

Question 1 The Braveheart Corporation uses departmental overhead rates to allocate its manufacturing overhead to jobs. The company has two departments: cutting and painting. The Cutting Department...

Simulate a Merge Conflict E. Introduce a merge conflict with the "Test" branch by doing the following: add the git version number to the README.md file on the Working branch merge the "Test" branch...

1. [4 Points] Use the Basic Differentiation Rules/Formulas to find the Derivative. Simplify your final answer algebraically and express it in radical notation. f(x) = [xx + 1 131] [x - 1/1/1]

You finally saw the couch you need: the colour is perfect (royal blue), the length is just right (it could seat you, your husband, and the kids), and the style is ideal for your furnishings (modern...

The trial balance for Pioneer Advertising Inc. is shown below. PIONEER ADVERTISING INC. Trial Balance October 31, 2017 Debit Credit Cash $14,000 Supplies 2,300 Prepaid Insurance 700 Equipment 4,500...

1. Use these cost, revenue, and probability estimates along with the decision tree to identify the best decision strategy for Trendy's Pies. 2. Suppose that Trendy is concerned about her probability...

Results from a Self.com poll on What is your top cold-weather beauty concern? were reported in the December 2008 issue of Self magazine: Dry skin57%; Chapped lips25%; Dull hair10%; Rough feet8%. a....

The null hypothesis,Ho = 16 was tested against the alternative hypothesis, Ha:

Referring to Applied Example 11. 7: a. Express the percentage of Americans who prefer baked to other by region as a 2 = 4 contingency table. b. Explain why the following question could be tested...

A newly formed company must decide on a plant location. There are two alternatives under consideration: locate near the major raw' materials or locate near the major customers. Locating near the raw...

What trade-offs are involved in deciding to have a single large centrally located facility instead of several smaller dispersed facilities?

We wish to time installing new shingles on our house. To start* we will try to time driving one nail into a shingle. Assume that the shingle is already in place. You have squatted on your roof facing...