Conduct the hypothesis test and provide the test statistic and the critical value, and state the conclusion.A person randomly selected 100 checks and recorded the cents portions of those checks. The table below lists those cents portions categorized according to the indicated values. Use a 0.05 significance level to test the claim that the four categories are equallylikely. The person expected that many checks for whole dollar amounts would result in a disproportionately high frequency for the first category, but do the results support that expectation?DCents portion of check25-4916NumberClick here to view the chi-square distribution table.0-2450The test statistic is.(Round to three decimal places as needed.)The critical value is.(Round to three decimal places as needed.)State the conclusion.Ho. There50-741375-9921▼sufficient evidence to warrant rejection of the claim that the four categories are equally likely. The resultsto support the expectation that the frequency for the first category is disproportionately high.

the null and alternative hypothesis H0 : p1=p2=p3=p4 = 1/4 = 0.25Ha : At least one of proportion not…

Answered: Conduct the hypothesis test and provide…

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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The average house has 15 paintings on its walls. Is the mean larger for houses owned by teachers? The data show the results of a survey of 16 teachers who were asked how many paintings they have in their houses. Assume that the distribution of the population is normal. 18, 15, 17, 14, 16, 17, 18, 15, 15, 14, 14, 14, 15, 15, 16, 18 What can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: Select an answer v H1: Select an answer v c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population mean is not significantly more than 15 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of paintings that are in…
Suppose we wish to study the average income of Cactus Club customers, so we plan to conduct a research project with a 95% confidence level. We need our range of error (E) to be no greater than $500. Based on our past experience, we estimate the sample standard deviation to be $5,000. What sample size do you need in order to conduct the research? Select one: a. 372 b. 784 c. 824 d. 385 e. 196
A survey was conducted that asked 1013 people how many books they had read in the past year. Results indicated that x=10.3 books and s=16.6books. Construct a 90% confidence interval for the mean number of books people read. Interpret the interval. Construct a 90% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to two decimal places as needed.) A. There is a 90% probability that the true mean number of books read is between ___ and ____ B. There is 90% confidence that the population mean number of books read is between ___ and ____. C. If repeated samples are taken, 90% of them will have a sample mean between ___ and ___.
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Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1005 and x=534 who said "yes." Use a 99% confidence level. LOADING... Click the icon to view a table of z scores. Question content area bottom Part 1 a) Find the best point estimate of the population proportion p. enter your response here (Round to three decimal places as needed.) Part 2 b) Identify the value of the margin of error E. E=enter your response here (Round to three decimal places as needed.) Part 3 c) Construct the confidence interval. enter your response here<p<enter your response here (Round to three decimal places as needed.) Part 4 d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. A. One has 99% confidence that the interval from the lower bound to the upper bound…
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