13% of all Americans suffer from sleep apnea. A researcher suspects that a different percentage of those wholive in the inner city have sleep apnea. Of the 390 people from the inner city surveyed, 70 of them sufferedfrom sleep apnea. What can be concluded at the level of significance of a = 0.10?b. The null and alternative hypotheses would be:Ho: ? 8Select an answer O|(please enter a decimal)H1: ? ESelect an answer O(Please enter a decimal)c. The test statistic ? 6(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? O af. Based on this, we shouldSelect an answer the null hypothesis.

Given: n= 390 ,x= 70.0 p= 0.13 ,significance level(∝)= 0.1 p̂= 70.0 / 390

Answered: 13% of all Americans suffer from sleep…

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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When we test the hypothesis that the population proportions are equal, we can use the Z test for a one-sided as well as a two-sided alternative. Select one: a. False b. True C. Not sure
Suppose are running a study/poll about the accuracy rate for fingerprint identification. You randomly sample 127 people and find that 89 of them match the condition you are testing. Suppose you are have the following null and alternative hypotheses for a test you are running: Ho: p = 0.72 H₁: p 0.72 Calculate the test statistic, rounded to 3 decimal places Question Help: Video Message instructor Post to forum Submit Question
Find A. Hypothesis and identify claim B. Compute test value C. Find p value D. Make decision E. Summarize results
Need help with parts C & D The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An acupuncturist claims that her treatment can reduce this figure significantly. A random sample of 191 Americans is administered the acupuncturists treatment and 25 report experiencing migraines.a. State Hypotheses to the scenario using the correct symbols. b. What is the sample proportion? (Round to 2 decimal places) ˆpp^= c. Suppose the P-value is calculated to be 0.0318What would your decision be for this test using α=α= 0.025? fail to reject the null accept the null reject the null d. Write a conclusion in terms of the acupuncturist's claim. Use the model provided by the instructor. Assume no errors were made.
Researchers wants to see if men have same blood pressure as women do. In the language of statistics, the most appropriate alternative hypothesis (H1) is that there is : O A. no difference between the population means. O B. a difference between the population means. O C. no difference between the sample means. D. None of these O E. a difference between the sample means.
Suppose the null hypothesis is rejected. State the conclusion based on the results of the test. Six years ago, 11.4% of registered births were to teenage mothers. A sociologist believes that the percentage has increased since then. Which of the following is the correct conclusion? O A. There is sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O B. There is sufficient evidence to conclude that the percentage of teenage mothers has increased. O C. There is not sufficient evidence to conclude that the percentage of teenage mothers has remained the same. O D. There is not sufficient evidence to conclude that the percentage of teenage mothers has increased.
A baseball team claims that the mean length of its games is 2.4 hours. State H0 and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below. A. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at most 2.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≤2.4." B. The null hypothesis expressed in words is, "the mean length of a baseball team's games is more than 2.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≠2.4." C. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at least 2.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≥2.4." D. The null hypothesis expressed in words is, "the mean length of a baseball…
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1
A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Ho as 5.4 Ha a 5.4 What type of test is being conducted in this problem? A. Right-tailed test OB. Two-tailed test OC. Left-tailed test C
The following data represent the level of happiness and level of health for a random sample of individuals from the General Social Survey. A researcher wants to determine if health and happiness level are related. Use the a = 0.05 level of significance to test the claim. Health Excellent Good Fair Poor Very Happy Pretty Happy Not Too Happy 271 261 82 20 247 567 231 53 33 103 92 36 *Source: General Social Survey 1) Determine the null and alternative hypotheses. Select the correct pair. O H.: Health and happiness have the same distribution Ha: Health and happiness follow a different distribution OH.: Health and happiness are independent Ha: Health and happiness are dependent 2) Determine the test Statistic. Round your answer to two decimals. x² = 3) Determine the p-value. Round your answer to four decimals. p-value = 4) Make a decision. O Reject the null hypothesis O Fail to reject the null hypothesis 5) Pick a conclusion. There is sufficient evidence to support the claim that health and…
A baseball team claims that the mean length of its games is more than 1.4 hours. State H0 and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below. A. The null hypothesis expressed in words is, "the mean length of a baseball team's games is not 1.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≠1.4." B. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at least 1.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≥1.4." C. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at most 1.4 hours." The null hypothesis is expressed symbolically as, "H0: μ≤1.4." D. The null hypothesis expressed in words is, "the mean length of a…

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