For the following hypothesis test, determine the null and alternative hypotheses. Also, classifythe hypothesis test as two-tailed, left-tailed, or right-tailed.The mean length of imprisonment for motor-vehicle theft offenders in this country is 19.7months. A hypothesis test is to be performed to determine whether the mean length ofimprisonment for motor-vehicle theft offenders in this city differs from the national mean of19.7 months.Choose the correct null and alternative hypotheses below.OA. Ho: μ> 19.7 monthsOB. Ho: μ< 19.7 monthsHa: μ= 19.7 monthsHa: μ = 19.7 monthsOC. Ho: μ= 19.7 monthsHa: μ> 19.7 monthsOF. Ho: H=19.7 monthsHa: μ< 19.7 monthsOD. Ho: μ= 19.7 monthsHa: μ# 19.7 monthsO E. Ho: μ# 19.7 monthsHa: μ = 19.7 monthsWhich of the following is the correct classification of the hypothesis test?O A. Right-tailedO B. Two-tailedO C. Left-tailed

The following information has been provided: The hypothesized mean is μ=19.7

Answered: For the following hypothesis test,…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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State the appropriate conclusion for the hypothesis test. Use the p-value toindicate how significant the sample data are.A. Claim: More than 2 out of 3 dentists choose Zest. p-Value = 0.045. Significancelevel, " = 0.05.B. It is not true that the average age of the top 200 tennis players is equal to 25. p-Value= 0.063. Significance level, " = 0.05.C. The tires on new cars last less, on average, than 40,000 miles. p-Value = 0.015.Significance level, " = 0.01
Which of the following statements could be used to develop a null and alternative hypothesis? A governor claimed that more than 76% of residents welcomed the stat-at-home order. The protesters claimed that less than half of small businesses had received aid. Hospitals claimed that they did not have the PPE required to keep their personnel safe. Capitol High School said that the SAT standard deviation was 22.5 points. She claimed that the number of Facebook accounts was greater than the number of Twitter accounts.
NebNas manages the credit department for a grocery store chain in the province, and she would like to determine whether the mean monthly balance of credit card holders is equal to $95. A random sample of 100 accounts indicated that the mean owed is $101.5 with a sample standard deviation of $25.6. If she wanted to test whether the mean balance is different from $95 and decided to reject the null hypothesis, what will be the p-value of the test?
A quiz related to digital knowledge was conducted. The quiz had 10 questions and covered topics such as the purpose of browser cookies, phishing scams, and privacy policies. The survey was given to 50 people. The mean score is 4.1 with a standard deviation of 2.6. We want to know if the data provide evidence that the mean score in the population is lower than 5. We will use alpha = 0.05 to make our decision. What is the null hypothesis for this question? Group of answer choices a. The proportion of people who pass the test is 5. b. The mean test score of the population is 5. c. The mean test score of the 50 people who took the test is 5. d.The standard deviation is 2.6
Louis is managing sales agents at a call center. The company expects agents to make 20 cold calls per hour with a standard deviation of 4 calls. He samples 35 of his employees, and finds that they made an average of 23 calls. Louis wants to know if his employees’ calls are significantly different than the company’s expectations at the 2% significance level. What are the null and alternate hypotheses?
You are a manager of a building that hosts the local farmers market for a town. You want to investigate if the average amount of sales for a vendor per week at your building is greater than $2040. After surveying 17 of their vendors, you find that mean sales per week of the vendors sampled was $2110 with a standard deviation of $114.03. What is the value of the test statistic for your hypothesis test? Note: 1- Only round your final answer. Round your final answer to two decimal places.
8
Use five-step hypothesis testing for each of the following problems. Number each of the five steps. You may use the traditional method or the p-value method. 1) Science fiction novels average 250 pages in length. The average length of 8 randomly chosen novels written by I. M. Wordy was 265 pages in length with a standard deviation of 35. At are Wordy's novels significantly longer than the average science fiction novel? Use five-step hypothesis testing. 2) The average monthly cell phone bill was reported to be $50.07 by the U.S. Wireless Industry. Random Sampling of a large cell phone company found the following monthly cell phone charges (in dollars): At the 0.01 level of significance, can it be concluded that the average phone bill has…
Two treatments for a new infectious disease have been developed to reduce hospitalizations. Each treatment was given to different groups of patients. Treatment 1 was given to 65 people. Subjects of treatment 1 had a mean hospital stay of 5.6 days with a standard deviation of 2.6 days. Treatment 2 was given to 54 people. Subjects of treatment 2 had a mean hospital stay of 8.4 days with a standard deviation of 3.0 days. Use the method of hypothesis testing to test the claim that the mean time in the hospital for treatment 1 is shorter than the mean time in the hospital for treatment 2 assuming a 0.05 significance level. (a) List the null and alternative hypotheses for this test. (b) Compute the value of the test statistic (c) Determine the rejection region.(d) Determine whether or not we can reject the null hypothesis.
The Woodcock-Johnson Cognitive Ability (WJCA) test indicates that the average score is 95. The same group of 12th grade students (n = 72) in Columbus are tested and the sample mean is 110.1 and the sample standard deviation is 15.2. Do the scores provide good evidence that the mean WJCA score of this population is greater than 95? State the null (H0) and alternative (Ha) hypotheses. 2. What are the confidence intervals for this data? 3. What is the value of the test statistic? 4. What is the p-value for this data? 5. What is your decision about the null hypothesis?: Reject Fail to Reject 6. Summarize the conclusion in the context of the problem.

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