Shoplifting costs retail businesses a great deal of money every year. In spite of thisthe historical evidence suggests that only 50% of all shoplifters are turned over to thepolice. A random survey of 40 retailers revealed that 24 of them had turned their mostrecent shoplifter in to the police. Use alpha = 0.05 for all tests.Calculate the probability of Type II error if the true proportion of shoplifters turnedover to police is 55%

Shoplifting costs retail businesses a great deal of money every year. In spite of thisthe historical evidence suggests that only 50% of all shoplifters are turned over to thepolice. A random survey of 40 retailers revealed that 24 of them had turned their mostrecent shoplifter in to the police. Use alpha = 0.05 for all tests.Calculate the probability of Type II error if the true proportion of shoplifters turnedover to police is 55%

Name: Shoplifting costs retail businesses a great deal of money every year.
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: Shoplifting costs retail businesses a great deal of money every year. In spite of thisthe historical evidence suggests that only 50% of all shoplifters are turned over to thepolice. A random survey of 40 retailers revealed that 24 of them had turned

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

The prevalence of glaucoma in elderly people among high-risk populations within a city is approximately 5%. Suppose a mobile unit is sent to various neighborhoods throughout the city to identify subjects for a new glaucoma study. If the unit evaluates 500 people, what is the probability of identifying at least 20 cases of glaucoma?
A nylon connector manufacturing plant yields 14 % defective items. If 1000 connectors are randomly picked from the process, what is the probability that the number of defectives exceeds 130?
Statistically what is “all the children are above average.” mean
Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is $133,000. Assume the standard deviation is $45,000. Suppose you take a simple random sample of 22 graduates. Round all answers to four decimal places if necessary. For a single randomly selected graduate, find the probability that her salary is between $136,209 and $142,906. For a simple random sample of 22 graduates, find the probability that the average salary is between $136,209 and $142,906. For part 2), is the assumption of normal necessary? No Yes
The president of Doerman Distributors, Inc. believes that 30% of the firm's orders come from first-time customers. A random sample of 100 orders will be used to estimate the proportion of first-time customers. What is the probability that the sample proportion will be within .05?
Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the standard deviation is 5. What is the probability of selecting a person with a score greater than Cody’s?
high blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.4. A sample of 83 U.S. adults is chosen, Find the probability that more than 41% of the people in this sample have high blood pressure.
According to a 2009 Reader's Digest article, people throw away approximately 11% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 111 grocery shoppers to investigate their behavior. What is the probability that the sample proportion exceeds 0.08? Note: You should carefully round any intermediate values you calculate to 4 decimal places to match wamap's approach and calculations.Answer = (Enter your answer as a number accurate to 4 decimal places.) Based on past experience, a bank believes that 7.5 % of the people who receive loans will not make payments on time. The bank has recently approved 220 loans.What must be true to be able to approximate the sampling distribution with a normal model? Before proceeding, think about whether the conditions have been met.What are the mean and standard deviation of the sampling distribution of the proportion of people who will not make payments on time in samples of 220?mean, as a decimal…
A direct mail company wishes to estimate the proportion of people on a large mailing list that will purchase a product. Suppose the true proportion is 0.07. If 343 are sampled, what is the probability that the sample proportion will be less than 0.11? Round your answer to four decimal places.
A typist makes on average 2 mistakes per page. What is the probability of a particular page having no errors on it? Which distribution should we apply?
Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is $190,000. Assume the standard deviation is $34,000. Suppose you take a simple random sample of 15 graduates. Round all answers to four decimal places if necessary. For a simple random sample of 15 graduates, find the probability that the average salary is between $180,932 and $187,421. For part d), is the assumption of normal necessary? NoYes
Physicians at a clinic gave what they thought were drugs to 890890 asthma, ulcer, and herpes patients. Although the doctors later learned that the drugs were really placebos, 5555 % of the patients reported an improved condition. Assume that if the placebo is ineffective, the probability of a patients condition improving is 0.530.53. For the hypotheses that the proportion of improving is 0.530.53 against that it is >0.53>0.53, find the p-value. ?=p=