According to a University Center for Logistics Management,3% of all merchandise sold in the United States getsreturned. A Seattle department store sampled 86 itemssold in January and found that 5 of the items werereturned.If you have the following null and alternative hypothesesfor a test you are running:Ho:p = 0.03Ha:p + 0.03Но: рCalculate the test statistic, rounded to 3 decimal places.= Z

Answered: If you have the following null and…

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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true or false If the p-value is 0.13 and the level of significance , αα , is 0.05 in a hypothesis test for a mean, then we accept the null hypothesis.
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.
What is the correct decision for a test of the difference in two proportions if the test statistic is 1.99, n1 = 150, n2 = 225, and α = .02?
Give the null hypothesis and the alternative hypothesis of the following both in words and symbols. Determine also whether the alternative hypothesis is directional or two sided. Justify your answers. Number 1 is answered for you to serve as example. Your answers maybe handwritten or encoded. 1. A researcher who wants to determine the mean differences of the Emotional Quotient (EQ) of the graduating students by gender. Null Hypothesis: There is no difference in the Emotional Quotient of the female and male graduating students Alternative Hypothesis: There is a significant difference in the Emotional Quotient of the female and male graduating students Type of Hypothesis: Nondirectional Justification: The objective of the Research is to determine the mean differences in EQ of the graduating students by gender. No implication of order is indicated in the research problem. Symbol: Hi: Mean of females; H2: Mean of males Ho: Ho: Hi = H2 Ha: Hi + H2 2. A professor who wishes to find out the…
Suppose are running a study/poll about the accuracy rate for fingerprint identification. You randomly sample 93 people and find that 71 of them match the condition you are testing.Suppose you are have the following null and alternative hypotheses for a test you are running:H0:p=0.79H0:p=0.79Ha:p<0.79Ha:p<0.79Calculate the test statistic, rounded to 3 decimal places z=z=
A news article that you read stated that 54% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 102 of the 221 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.10 level of significance?For this study, we should use The null and alternative hypotheses would be: Ho: (please enter a decimal) H1: (Please enter a decimal)The test statistic = (please show your answer to 3 decimal places.)The p-value = (Please show your answer to 4 decimal places.)The p-value is ααBased on this, we should the null hypothesis.Thus, the final conclusion is that ... The data suggest the population proportion is not significantly smaller 54% at αα= 0.10, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is smaller 54%.The data suggest the populaton proportion is significantly smaller 54% at αα= 0.10, so there is sufficient evidence to conclude that the…
Answer the following to summarize the test of the hypothesis that each of A, B, C, and D is equally likely to be the correct answer on tests in these introductory college courses. Use the 0.05 level of significance for the test. (a) Determine the type of test statistic to use. Type of test statistic: ▼(Choose one) (b) Find the value of the test statistic. (Round your answer to two or more decimal places.) (c) Find the critical value. (Round your answer to two or more decimal places.) (d)Can we reject the hypothesis that A, B, C, and D are equally likely to be the correct answer on tests in these introductory college courses? Yes No
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p = 0.2 versus H,: p> 0.2 n= 125; x= 40; a = 0.05 Click here to view page 1 of the table. Click here to view page 2 of the table. Calculate the test statistic, zg. Zo = (Round to two decimal places as needed.)
Successful hotel managers must have personality characteristics often traditionally stereotyped as feminine (such as "compassionate") as well as those traditionally stereotyped as masculine (such as "forceful"). The Bem Sex-Role Inventory (BSRI) is a personality test that gives separate ratings for "female" and "male" stereotypes, both on a scale of 1 to 7. Although the BSRI was developed at a time when these stereotypes were more pronounced, it is still widely used to assess personality types. Unfortunately, the ratings are often referred to as femininity and masculinity scores. A sample of 148 male general managers of three-star and four-star hotels had mean BSRI femininity score x = 5.29. The mean score for the general male population is u = 5.19. Do hotel managers, on the average, differ significantly in femininity score from men in general? Assume that the standard deviation of scores in the population of all male hotel managers is the same as the o = 0.78 for the adult male…
Only about 18% of all people can wiggle their ears. Is this percent lower for millionaires? Of the 326 millionaires surveyed, 49 could wiggle their ears. What can be concluded at the αα = 0.01 level of significance? For this study, we should use Correct The null and alternative hypotheses would be: H0: (please enter a decimal) H1: (Please enter a decimal) The test statistic = ? (please show your answer to 4 decimal places.) The p-value = ? (Please show your answer to 4 decimal places.) The p-value is <OR > α? Based on this, we should ACCEPT OR REJECT OR FAIL TO REJECT the null hypothesis ?
Suppose are running a study/poll about the accuracy rate for fingerprint identification. You randomly sample 74 people and find that 41 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 = 0.53 Ha:p + 0.53 Calculate the test statistic, rounded to 3 decimal places = Z
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If you have the following null and alternative hypotheses for a test you are running: Ho:p = 0.03 Ha:p + 0.03 Но: р Calculate the test statistic, rounded to 3 decimal places. = Z