(Problem for Questions 20- 23). In a study focusing on student's achievement. 100 students were classified as low, average, or high achieving, based on their responses to a series of questions. These are the data that were collected from the classification representing their attitudes about achievement. Low achieving 12

(Problem for Questions 20- 23). In a study focusing on student's achievement. 100 students were classified as low, average, or high achieving, based on their responses to a series of questions. These are the data that were collected from the classification representing their attitudes about achievement. Low achieving 12

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 decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 69% . Suppose that we have reason to believe that this proportion has changed, and we wish to carry out a hypothesis test to see if our belief can be supported. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test. H0:H1:=
A coin-operated drink machine was designed to discharge a mean of 7 ounces of coffee per cup. Suppose that we want to cary out a hypothesis test to see if the true mean discharge differs from 7. State the null hypothesis H, and the alternetive hypothesis II, that we would use for this test. H: 0 H: 0
A medical researcher claims that the proportion of people taking a certain medication that develop serious side effects is 12%. To test this claim, a random sample of 900 people taking the medication is taken and it is determined that 93 people have experienced serious side effects.. The following is the setup for this hypothesis test: Ho :p 0.12 Ha p 0.12 In this example, the p-value was determined to be 0.124. come to a conclusion and interpret the results for this hypothesis test for a proportion (use a significance level of 5%) Select the correct answer below: The decision is to reject the Null Hypothesis. The conclusion is that there is enough evidence to reject the claim O The decision is to fail to reject the Null Hypothesis. The conclusion is that there is not enough evidence to reject the claim
Suppose taht you ran the following hypothesis test: H0: p1-p2<=0 Ha: p1-p2>0 and the data you collected produced a test statistic of Z0=1.68. Calculate the P value for this Test statistic. Round off your answer to the 4th decimal.
Only about 13% of all people can wiggle their ears. Is this percent different for millionaires? Of the 364 millionaires surveyed, 40 could wiggle their ears. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: H₁: ? Select an answer Select an answer = (please enter a decimal) c. The test statistic?0 d. The p-value = e. The p-value is a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... (Please enter a decimal) (please show your answer to 3 decimal places.) (Please show your answer to 3 decimal places.) O The data suggest the population proportion is not significantly different from 13% at a = 0.01, so there is statistically insignificant evidence to conclude that the population proportion of millionaires who can wiggle their ears is different from 13%. O The data suggest the population proportion is not significantly…
53% of students entering four-year colleges receive a degree within six years. Is this percent larger than for students who play intramural sports? 161 of the 283 students who played intramural sports recelved a degree within six years. What can be concluded at the level of significance of a = 0.05? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? ♥ Select an answer ♥ (please enter a decimal) H: ?♥ Select an answer ♥ |(Please enter a decimal) C. The test statistic|? ♥ (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 ? ♥ a f. Based on this, we should| Select an answerv the null hypothesis. g. Thus, the final conclusion is that ... The data suggest the populaton proportion is significantly larger than 53% at a = 0.05, so there is sufficient evidence to conclude that the population proportion of students who played intramural sports who received a…
. If a hypothesis test is a two-tailed test and the test statistic is t = 2.687 when n = 19, what is the P-value of the test? Must also show picture with degrees of freedom.
p5need part b -1.850wrong
You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly more than 0.73. If your null and alternative hypothesis are: Ho: p ≤ 0.73 H₁: p > 0.73 Then the test is: Oright tailed O left tailed two tailed
can you answer A and B C
12% of all Americans suffer from sleep apnea. A researcher suspects that a lower percentage of those who live in the inner city have sleep apnea. Of the 335 people from the inner city surveyed, 34 of them suffered from sleep apnea. What can be concluded at the level of significance of a = 0.01? a. For this study, we should use z-test for a population proportion ♥ b. The null and alternative hypotheses would be: Ho: ? Select an answer |(please enter a decimal) Hạ ?v Select an answer ♥ (Please enter a decimal) c. The test statistic ?v = (please show your answer to 4 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is f. Based on this, we should fail to reject the null hypothesis. g. Thus, the final conclusion is that. O The data suggest the populaton proportion is significantly smaller than 12% at a= 0.01, so there is sufficient evidence to conclude that the population proportion of inner city residents who have sleep apnea is smaller than…