The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 8.2% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine.(a) Explain why this is a binomial experiment.(b) Assuming his suspicion that 8.2% of his customers buy a magazine is correct, what is the probability that exactly 5 out of the first 11 customers buy a magazine? Give your answer as a decimal number rounded to two digits.(c) What is the expected number of customers from this sample that will buy a magazine?

The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 8.2% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine.(a) Explain why this is a binomial experiment.(b) Assuming his suspicion that 8.2% of his customers buy a magazine is correct, what is the probability that exactly 5 out of the first 11 customers buy a magazine? Give your answer as a decimal number rounded to two digits.(c) What is the expected number of customers from this sample that will buy a magazine?

Name: The owner of a small deli is trying to decide whether to discontinue s
Uploaded: 2024-03-20T07:06:41.000Z
Channel: Bartleby
Description: The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 8.2% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

A researcher claims that exactly 40% of all adults in the U.S. use their cell phone for most of their online browsing. You believe that the true proportion is different. To test this, you take a simple random sample of 200 adults in the U.S and find that 44% of them use their phone for most of their online browsing. Test at 5% significance. Round to the fourth as needed What's the minimum population size required? How many successes were there? Ho: Select an answer V Select an answer v HA: Select an answer V Select an answer V Test Statistic: P-value: Did something significant happen? Select an answer Select the Decision Rule: Select an answer There Select an answer v enough evidence to conclude Select an answer Build a 95% confidence interval and decide if you can conclude the same. Use your calculator to do this and round to the fourth decimal place. Can we conclude the same as our Hypothesis Test? v because the true proportion of U.S. adults that use their cell phones for most of…
Suppose P(A) = .5 and P(B) = .3 and A andB are independent. What is P(A and B)? %D %3D
Example 17: In a sample of 1000 citizens of India, 540 are wheat eaters and the rest are rice eaters. Can we assume that both rice and wheat are equally popular in India at a%. level of significance?
A newspaper conducted a statewide survey concerning a proposal to raise taxes in order to prevent budget cuts to education. The newspaper took a random sample (assume it is an SRS) of 400 registered voters and found that 160 would vote to raise taxes. Let p represent the proportion of registered voters in the state that would vote to raise taxes. (Round your answers to 4 decimal places, if needed.) (a) The standard error for the sample proportion is (b) The margin of error for an 88% confidence interval for p is Check
Polling 2004. In the 2004 U.S. presidential election,the official results showed that George W. Bush received50.7% of the vote and John Kerry received 48.3%. RalphNader, running as a third-party candidate, picked uponly 0.4%. After the election, there was much discussionabout exit polls, which had initially indicated a differentresult. Suppose you had taken a random sample of 1000voters in an exit poll and asked them for whom they hadvoted.a) Would you always get 507 votes for Bush and 483 forKerry? b) In 95% of such polls, your sample proportion of vot-ers for Bush should be between what two values? c) In 95% of such polls, your sample proportion of vot-ers for Nader should be between what two numbers? d) Would you expect the sample proportion of Nadervotes to vary more, less, or about the same as thesample proportion of Bush votes? Why?
[9] Two researchers conducted studies about vaccination hesitancy rates of adults in the entire Philippines. The first researcher found out that 12% of his respondents were hesitant and will never allow to be vaccinated. The second researcher found 9%. Assuming both followed proper sampling procedures and did their calculations correctly, what would be the likely explanation/s for this discrepancy? Provide 3 (three) explanations:
Part 2
Suppose that 67% of voters in a state oppose concealed carry handguns. Repeated random samples of 400 voters were collected. Use the Empirical Rule to find the interval in which the sample proportion of opponents should fall 95% of the time. Select one: A. (64.6%,69.4%)(64.6%,69.4%) B. (63.8%,70.2%)(63.8%,70.2%) C. (60.7%,73.3%)(60.7%,73.3%) D. (61.5%,72.5%)(61.5%,72.5%) E. None of the above
R3.25. Timing In August 2011, a Sodahead.com voluntary response poll asked site visitors, "Obama is on Vacation Again: Does He Have the Worst Timing Ever?" 56% of the 629 votes were for "Yes." During the week of the poll, a 5.8 earthquake struck near Washington, D.C., and Hurricane Irene made its way up the East Coast. What types of bias may be present in the results of the poll?
Write about the role of box-and-plots in statistical random experiments. The double whisker plots of the homework time (in minutes) per night with TV time per night of the same group of the students are: a) What percent of the students work on homework for at least 48 minutes per night? b) What percent of the students watch TV for at least 15minutes per night? c) Is it more common for the students at this university to spend more than 1 hour on homework and more than 1 hour on watching TV also? Explain.
(6) A student surveys some students on campus in the evening and finds that 16 out of 20 of the students she interviewed are part time students. She uses the data to estimate the percentage of all students who are part time. What type of bias is present in her sample?
Part 2