Test the claim at the given significance level.A poll of 1068 adult Americans reveals that 48% of the voters surveyed prefer theDemocratic candidate for the presidency. At the 0.05 level of significance, test the claim thatat least half of all voters prefer the Democrat.Ho:H₁:Note: If the alternative hypothesis includes a symbol, enter the words "not equal to" or=/=Test statistic: z=P-value: p=ConclusionCritical value: z=(Round to three decimal places.)Note: For a two-tailed test, enter both separated by a comma. For example, enter "1.022, -1.022" (use the correct critical value in place of 1.022)We(Round to two decimal places.)(Round to four decimal places.)Therethe null hypothesis. (Enter "reject" or "fail to reject" as appropriate.)sufficient evidence to warrant rejection of the claim that at leasthalf of all voters prefer the Democrat. (Enter "is" or "is not" as appropriate.)

A poll of 1068 adult Americans reveals that 48% of the voters surveyed prefer the Democratic…

Answered: Test the claim at the given…

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 survey claims that 9 out of 10 doctors recommend brand Wfor their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand Wis less than 90%, a random sample of 100 doctors results in 85 who indicate that they recommend brand W. 1. What decision should you makeusing a significance level of 5%? 2. Summarize your conclusions in the context of the problem.
The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
If you have questioned that your significant hypothesis test is significant “enough” to have true meaning, what are some other things you can look at to determine practical significance?
Test the claim that the mean GPA of Orange Coast students is significantly different than the mean GPA of Coastline students at the 0.1 significance level.The null and alternative hypothesis would be: H0:pO≤pCH0:pO≤pCH1:pO>pCH1:pO>pC H0:pO=pCH0:pO=pCH1:pO≠pCH1:pO≠pC H0:pO≥pCH0:pO≥pCH1:pO<pCH1:pO<pC H0:μO=μCH0:μO=μCH1:μO≠μCH1:μO≠μC H0:μO≥μCH0:μO≥μCH1:μO<μCH1:μO<μC H0:μO≤μCH0:μO≤μCH1:μO>μCH1:μO>μC The test is: left-tailed right-tailed two-tailed The sample consisted of 80 Orange Coast students, with a sample mean GPA of 2.73 and a standard deviation of 0.08, and 80 Coastline students, with a sample mean GPA of 2.68 and a standard deviation of 0.05.The test statistic is: (to 2 decimals)The p-value is: (to 2 decimals)Based on this we: Reject the null hypothesis Fail to reject the null hypothesis
Q13. The null Hypothesis is rejected, if the P-value is larger than significance level.a. Trueb. False
Please help I need in 1 hour thankyou
write down the hypothesis test for checking the following: 1. whether the mean is different from 2 2. whether the mean is less than the value of 5
A one-sided hypothesis test is to be performed with a significance level of 0.05. Suppose that the null hypothesis is false. If a significance level of 0.01 were to be used instead of a significance level of 0.05, which of the following would be true? A B O E Neither the probability of a Type Il error nor the power of the test would change. Both the probability of a Type II error and the power of the test would decrease. Both the probability of a Type Il error and the power of the test would increase. The probability of a Type II error would decrease and the power of the test would increase. The probability of a Type Il error would increase and the power of the test would decrease.
A researcher wanted to examine the hypothesis that the proportion of obese individuals among those without diabetes exceeds 35%. To investigate this, she gathered a random sample of 1000 diabetes-free individuals and determined that 360 of them are obese. i. State the hypothesis statements. ii. Perform the hypothesis test. What can she conclude at a significance level of a = 0.05?
If p-value is less than the significance level (alpha), what is the decision of a hypothesis test? a. Do not reject Ho b. Neither reject Ho c. Reject Ho d. We need data to answer this question
Test the claim that the mean GPA of night students is smaller than 3.3 at the 0.10 significance level. The null and alternative hypothesis would be: Ho:p 0.825 Ho:p ≤ 0.825 Ho: ≤3.3 Ho: 3.3 Ho: 23.3 Ho:p> 0.825 H₁:p0.825 H₁:p> 0.825 H₁:p>3.3 H₁: 3.3 H₁: <3.3 H₁ p < 0.825 O The test is: right-tailed left-tailed two-tailed Based on a sample of 65 people, the sample mean GPA was 3.26 with a standard deviation of 0.02 The test statistic is: (to 2 decimals) The p-value is: Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis (to 2 decimals)

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