A city claims that the mean number of public transportation users per day is at least 4,800. A group of researchers thinkthis is not accurate and want to show that the number of public transportation users is less than 4,800Identify the null hypothesis, Ho, and the alternative hypothesis, Ha , in terms of the parameter μ.Select the correct answer below:OHo: μ < 4,800; Ha: μ 24,800Ho: u > 4,800; Ha: u K 4,800Ho: μ 4,800; Ha: μ > 4,800Ho: μ 24,800; Ha : μ < 4,800OO

Null and alternative hypothesisNull Hypothesis:A null hypothesis is a statement regarding the…

Answered: A city claims that the mean number of…

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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A teacher performs a standardized test to evaluate how her students do compared to students nationwide. Random sample of 200 from private school whose average acore is 72. Normally distributed with a meqn of 75 and standars deviation of 16. Do students at this small private school have different reading abilities compared to students nationwide? Set alpha=.05. A. State the null abd the research hypothesis B. Identify the critical values of z or t used to define the decision rule C. Calculate the test statistic D. Report the p-value E. Report your findings
pls. answer using 7 steps:-Parameter of interest-Null hypothesisAlternative hypothesis -Test statistic -Reject H0 if: -Computations: -Conclusion
The heart rates before and after running a race (in beats per minute) of a sample of four athletes are shown in the following table: Athlete Heart rate before Heart rate after 120 129 134 123 50 52 3 56 4 53 The aim of the experiment was to determine whether the population mean heart rate after a race is more than 70 beats per minute greater than before the race. 1.4 Use the appropriate hypotheses test to determine whether the population mean heart rate after a race is more than 70 beats per minute greater than before the race. Use a = 0.05 and also find the approximate p-value. Also mention any assumptions made. Using your answer in 1.4), comment on whether you are subject to a Type I or a Type II error. Describe this error in the context of this problem. Estimate the difference in the mean heart rate by calculating a 90% confidence intervai for the data. Use this result to determine whether the population mean heart rate after a race is more than 70 beats per minute greater than…
The accompanying data are measured body temperatures of adults at 12 AM on a certain day. Use the Wilcoxon signed-ranks test to test the claim that the median is equal to 98.6°F. Use a 0.05 significance level. Click the icon to view the body temperature data. Determine the null and alternative hypotheses. Ho: The median body temperature is H₁: The median body temperature is (Type integers or decimals. Do not round.) Determine the P-value. The P-value is (Round to three decimal places as needed.) Determine the proper conclusion. Ho. There is ▼ ✔ evidence at the 0.05 significance level to warrant rejection of the claim that the median body temperature is C 98.6°F. Body Temperature Data 98.1 97.7 98.7 98.1 98.9 97.7 98.5 98.7 98.1 98.1 98.1 97.9 97.3 98.3 98.0 98.1 98.4 99.1 97.9 96.9 97.2 98.2 97.9 98.9 97.5 98.1 97.3 98.1 98.5 98.5 96.9 98.5 98.1 99.3 97.7 98.3 98.9 97.8 98.1 98.0 98.6 97.3 98.4 98.6 98 7 99.0 97.3 97.5 98.0 98.1 98.6 98.7 98.7 98.7 99.2 97.7 97.7 98.5 97.6 99.4 97.6…
1. Identify the parameter and set up null and alternative hypotheses. A drug company says their brand of over the counter pain medicine contains on average 1.25 grams of acetaminophen in each tablet. A consumer wants to find evidence against the drug company's claim. 1. Identify the parameter: 2. Null hypothesis: 3. Alternative Hypothesis: а. b. Social scientists suspects the median age of women at the birth of the first child is more than 25 years. 1. Identify the parameter: 2. Null hypothesis 3. Alernative Hypothesis: c. A consumer advocacy group wants to prove there is no difference between regular unleaded and premium unleaded average gas mileage. 1. Identify the parameter: 2.Null hypothesis: 3.Alternative Hypothesis:
Assume a significance level of α=0.05 and use the given information to complete parts (a) and (b) below. Original claim: The mean pulse rate (in beats per minute) of a certain group of adult males is 68 bpm. The hypothesis test results in a P-value of 0.0901. a. State a conclusion about the null hypothesis. (Reject H0 or fail to reject H0.) Choose the correct answer below. A. Reject H0 because the P-value is greater than α. B. Fail to reject H0 because the P-value is greater than α. C. Reject H0 because the P-value is less than or equal to α. D. Fail to reject H0 because the P-value is less than or equal to α. b. Without using technical terms, state a final conclusion that addresses the original claim. Which of the following is the correct conclusion? A. There is sufficient evidence to warrant rejection of the claim that the mean pulse rate (in beats per minute) of the group of adult males is 68 bpm. B.…
Perform the following hypothesis test: HO: µ = 10 H1: µ 10 The sample mean is 9.55, population standard deviation of 1.5 and a sample size of 51. Use a 5% significance level. What is the value of the test statistic? (Give your answer rounded to 2 decimals) (Be careful to make sure your + or - sign is correct)
): A null hypothesis is that the average blood pressure for adult is 70. For a sample of 60 adults, the average blood pressure is 71.8. A significance test is done, and the p-value is 0.02 what is the most appropriate conclusion? O A. Reject the hypothesis that the sample average is 70 O B. Reject the hypothesis that the population averages 70 O C. Conclude that the population average is 70 O D. Conclude that the population averages 71.8 O E. None of these
Select the most appropriate response. It is claimed that the mean age of bus drivers in Chicago is 59.3 years. If a hypothesis test is performed, how should you interpret a decision that fails to reject the null hypothesis? Question 2 options: There is not sufficient evidence to reject the claim µ = 59.3. There is sufficient evidence to reject the claim p = 59.3. There is not sufficient evidence to support the claim p = 59.3. There is sufficient evidence to support the claim u = 59.3.
Answer the following
Assume a significance level of α=0.1 and use the given information to complete parts (a) and (b) below. Original claim: The mean pulse rate (in beats per minute) of a certain group of adult males is 70 bpm. The hypothesis test results in a P-value of 0.0025. a. State a conclusion about the null hypothesis. (Reject H0 or fail to reject H0.) Choose the correct answer below. A. Fail to reject H0 because the P-value is less than or equal to α. B. Reject H0 because the P-value is less than or equal to α. C. Reject H0 because the P-value is greater than α. D. Fail to reject H0 because the P-value is greater than α. b. Without using technical terms, state a final conclusion that addresses the original claim. Which of the following is the correct conclusion? A. The mean pulse rate (in beats per minute) of the group of adult males is 70 bpm. B. There is sufficient evidence to warrant rejection of the claim that the…
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