A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed,or two-tailed.Ho: p = 0.3Ha: p 0.3.What type of test is being conducted in this problem?OA. Two-tailed testOB. Left-tailed testOC. Right-tailed testSave

GivenThe null and alternative hypothesis isH0:p=0.3Ha:p≠0.3

Answered: A null and alternative hypothesis are…

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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Tru or False? For a right-tailed test, reject the null hypothesis only if P < α. For a left-tailed test, reject the null hypothesis only if P < α. If we reject the null hypothesis at a significance level of α = .01, then we also reject the null hypothesis at a significance level of α = .05.
Test the claim that the mean GPA of night students is significantly different than 2.4 at the 0.05 significance level. The null and alternative hypothesis would be: Ho p≥ 0.6 Ho: p=0.6 Hop=2.4 Ho: p ≤ 0.6 Ho: ≤2.4 Ho:μ ≥ 2.4 H₁: p0.6 H₁: μ> 2.4 H₁: μ< 2.4 The test is: left-tailed right-tailed O Based on a sample of 65 people, the sample mean GPA was 2.44 with a standard deviation of 0.03 The test statistic is: (to 2 decimals) The p-value is: two-tailed O Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis (to 2 decimals)
Test the claim that the proportion of people who own cats is larger than 60% at the 0.05 significance level. The null and alternative hypothesis would be: Ho:p ≤ 0.6 Ho:p> 0.6 Ho:p> 0.6 Ho: 0.6 H₁ p 0.6 Hp 0.6 H₁0.6 O The test is: right-tailed left-tailed two-tailed O Based on a sample of 700 people, 61% owned cats The test statistic is: The p-value is: Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis (to 2 decimals) (to 4 decimals)
Below is the rest of the questions to the problem because I wasnt able to fit it in with the images. a. The null hypothesis, H0, is U1 = U2 / U1 greater than or equal to U2 / U1 less than or equal to U2 The alternative hypothesis, Ha, is U1 not equal to U2 / U1 greater than U2 / U1 less than U2. C. find the standardized test statistic t = ____ (Type an integer or decimal rounded to three decimal places as needed) (d) Decide whether to reject or fail to reject the null hypothesis. Fail to reject / reject the null hypothesis. (e) Interpret the decision in the context of the original claim. At the 10% significance level, there is / there is not enough evidence to reject the claim that the mean annual costs of food for dogs and cats are the same.
I would like the solutions for all parts of the problem
Test the claim that the mean GPA of night students is smaller than 2.6 at the 0.005 significance level. The null and alternative hypothesis would be: Ho:µ > 2.6 Ho:p = 0.65 Ho:u 0.65 H1:µ 2.6 H1:p > 0.65 H1:µ # 2.6 H1:p < 0.65 The test is: right-tailed left-tailed two-tailed Based on a sample of 80 people, the sample mean GPA was 2.59 with a standard deviation of 0.08 The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis Quortion Holn: O Post to forum
The first test a doctor would order to determine whether a person is infected with HIV (the virus that causes AIDS) is the ELISA test. It detects antibodies and antigens for HIV. A study in Statistical Science by J. Gastwirth estimated that, if the person is actually infected with HIV, this test produces a positive result 97.7% of the time. If a person is not infected with HIV, the test result is negative 92.6% of the time. According the the US Centers for Disease Control (CDC), an estimated 1.1 million Americans out of a population of 321 million were infected with HIV in 2015. Using the information above, determine the probability that a randomly selected person whose ELISA test is positive actually is infected with HIV? a. What is the probability that a randomly selected American is infected with HIV? b. Using the answer to part (a) and the conditional probabilities of positive and negative ELISA test results, fill out the contingency table below: ELISA Test Result…
Can you please help me answer the following as I got this incorrect on my assignment: Question: Relate to this specific scenario: What is the null hypothesis? What is the alternate / research hypothesis? Which one do you statistically assess? My answer that was marked incorrect: The null hypothesis states that there is no difference or correlation between a person's heart rate and exam score. The alternative: A person's heart rate and predicted test score are related. An inferential statistical test is performed on the null hypothesis. Professor feedback to change and resubmit: not either of these words is most appropriate - scenario states prediction To measure whether test performance can be predicted based on one’s anxiety, a researcher asked his students to come to the lab 15 minutes before they were to take an exam in his class. The researcher measured the students' heart rates and then matched these scores with their exam performance after they had taken the exam. Use the…
Select the appropriate null and alternative hypothesis for the following research question: People who see therapists have lower depression scores than people who do not see therapists? xbar1 = the average depression score for people who see a therapist xbar2 = the average depression score for people who do not see a therapist O Null Hypothesis: People who see a therapist have depression scores lower than or equal to people who do not see a therapist i.e. xbar1 xbar2 O Null Hypothesis: People who see a therapist have depression scores higher than or equal to people who do not see a therapist i.e. xbar1 >= xbar2 Alternative Hypothesis: People who see a therapist have depression scores lower than people who do not see a therapist i.e. xbar1 < xbar2
you did not answer this Let p be the true proportion of firms with a chief marketing officer currently on their top management team. To conduct the hypothesis test, the null and alternative hypotheses are formulated as: H₀: p̄ p̄ = 0.42'; Haa: p̄ p̄ ≠ 0.42 H₀: p ≥ 0.42; Haa: p < 0.42 H₀: p = 0.42; Haa: p ≠ 0.42 H₀: p ≤ 0.42; Haa: p > 0.42 If the null hypothesis is true, the sampling distribution of the sample proportion p̄ p̄ can be approximated by a _____ with a mean ______ and a standard deviation of ____ . The test statistic is _____ .
Test the claim that the proportion of people who own cats is significantly different than 20% at the 0.02 significance level. The null and alternative hypothesis would be: Ho: 0.2 Ho:p 0.2 Ho: 0.2 O O O The test is: left-tailed two-tailed right-tailed O O Ho:p 0.2 of H₁:p> 0.2 H₁: 0.2 H₁ :p < 0.2 O O Based on a sample of 500 people, 22% owned cats The p-value is: (to 2 decimals)
Test the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats at the 0.02 significance level. The null and alternative hypothesis would be: Ho: M = μF Ho: PM = PF H₁ μM μF H₁:PM > PF The test is: left-tailed right-tailed two-tailed Based on a sample of 60 men, 30% owned cats Based on a sample of 40 women, 45% owned cats The test statistic is: Ho: PM = PF H₁: PM μF (to 2 decimals) (to 2 decimals) Ho: PM = PF Ho: M = μF H₁:PM ‡ PF H₁: μM < MF

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A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. Ho: p = 0.3 Ha: p * 0.3 What type of test is being conducted in this problem? OA. Two-tailed test OB. Left-tailed test OC. Right-tailed test