Which set of numbers wouldcorrespond to a hypothesis test withthe greatest power?Cohen's d = 0.6 & n = 500O Cohen's d = 0.6 & n = 50O Cohen's d = 0.5 & n = 50O Cohen's d = 0.5 & n = 500

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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 cell phone salesperson selects a random sample of 75 customers. For each customer, he records which cell phone provider (A, B, or C) they use and the type of phone they purchase. He would like to know whether there is convincing evidence that a customer’s cell phone provider is associated with the type of cell phone the customer purchases. Let = 0.05. What are the hypotheses for this test? H0: Type of cell phone is not independent of the cell phone provider.Ha: Type of cell phone is independent of the cell phone provider. H0: Type of cell phone is independent of the cell phone provider.Ha: Type of cell phone is not independent of the cell phone provider. H0: The proportion of types of phones differs for cell phone providers.Ha: The proportion of types of phones equals in cell phone providers. H0: There is an association between type of cell phone and the cell phone provider.Ha: There is no association between type of cell phone and the cell phone provider.
. 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.
b. The null and alternative hypotheses would be: Ho: ?v Select an answerv |(please enter a decimal) H1: ? 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.)
What type of test would be associated with the hypotheses below? Ho: μ ≥ $165,000 H₂: μ< $165,000 one-sample, two-tailed two-sample, two-tailed two-sample, one-tailed one-sample, one-tailed CS Scanned with CamScanner p M Bogn 23 www M Pelo12 win
Presidential Poll. A research group suspects that less than 46% of Americans support the Republican presidential candidate. To test this claim, they randomly call Americans until they get 1000 responses. Of the 1000 people who responded, 457 of them say they support the Republican presidential candidate. Test the research group's suspicion at a 5% level of significance.(a) Select the correct null and alternative hypotheses. Ho: p = 0.457Ha: p < 0.457 Ho: p = 0.46Ha: p ≠ 0.46 Ho: p = 0.46Ha: p < 0.46 Ho: p = 0.457Ha: p ≠ 0.457 Ho: p = 0.457Ha: p > 0.457 Ho: p = 0.46Ha: p > 0.46 (b) Find the p-value (round to three significant figures). (c) Write the final conclusion using everyday language. There is sufficient evidence to reject the group's suspicion. There is not sufficient evidence to reject the group's suspicion. There is sufficient evidence to support the group's suspicion. There is not sufficient evidence to support the group's suspicion (d) What are some…
Northwest claims that exactly 80% flights arrived on time in this September. 100 flights were randomly selected in this September, and 70% were on time. Set up the null and alternative hypotheses to test for the Northwest's claim.
A hypothesis test is performed in a study of AirBnB's to learn about the proportion of them that have 4 televisions. The null and alternative hypotheses are as followed: Null: p=0.13 Alternative: p<0.13 Researchers had determined that 39/500 randomly selected airbnb's had 4 televisions. Once all of the necessary conditions were verified for a statistical inference, the researchers correctly calculated the P-Value to be approximately 2.7269x10^-4 a) Please use the appropriate symbols and values to communicate the specific conditional probability that the P-Value represents in the context of this study. b) In a sentence or two, describe the specific event in the context of this study which has probability equal to the P-Value of occuring. c) When the P-Value in this hypothesis test is rounded and expressed with 3 digits after the decimal point (0.000) does it mean that the event described in part (b) has no chance of occurring? Explain in one to two sentences.
A flight attendant selects a random sample of 201 travelers. For each, he records the class in which the person travels and whether they have carry-on luggage. He would like to know if there is convincing evidence that the class in which a person travels is associated with having carry-on luggage. Let a = 0.05. What are the hypotheses for this test? O Ho: Class is not independent of carry-on luggage. Hg: Class is independent of carry-on luggage. O Họ: Class is independent of carry-on luggage. Hg: Class is not independent of carry-on luggage. O Họ: There is an association between class and carry-on luggage. Hạ: There is no association between class and carry-on luggage. O Ho: The proportion of travelers who have carry-on luggage is not the same in the types of class. Hg: The proportion of travelers who have carry-on luggage is the same in the types of class.
14% 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 341 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 Select an answer b. The null and alternative hypotheses would be: Ho: ? v Select an answer V (please enter a decimal) H1: ? v Select an answer V (Please enter a decimal) c. The test statistic ? v (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 ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly smaller than 14% at a = 0.01, so there is sufficient evidence to conclude that the population proportion of inner city residents who have sleep apnea is equal to…
An experimenter flips a coin 100 times and gets 54 heads. Test the claim that the coin is fair against the two-sided alternative. (Null and Alternate Hypothesis and Test Statistic) A. Ho: p = 0.50; Ha: p < 0.50; z = 0.800 B. Ho: p = 0.50; Ha: p > 0.50; z = 0.800 C. Ho: p = 0.50; Ha: p > 0.50; z = 0.081 D. Ho: p = 0.50; Ha: p ≠ 0.50; z = 0.800 E. Ho: p = 0.50; Ha: p ≠ 0.50; z = 0.081 (p-value and conclusion) A. p = 0.540; FRHo (No sufficient evidence to reject the claim) B. p = 0.424; RHo (Sufficient evidence exists to reject the claim) C. p = 1.576; FRHo (No sufficient evidence to reject the claim) D. p = 0.424; FRHo (No sufficient evidence to reject the claim) E. p = 1.576; RHo (No sufficient evidence to reject the claim)
please answer d, e, f
A store owner wanted to determine if more than 5% of customers made a purchase after he sent out a text. He sent out 300 texts to 300 randomly selected customers. Out of those 300, 17 made purchases. Is this evidence that if he sent out texts to all of his customers more than 5% would make purchases? What is the appropriate null and alternative hypothesis? Ho: p= 0.05 Ha: p> 0.05 O Ho: phat = 0.05 Ha: phat > 0.05 O Ho: p= 0.056 Ha: p > 0.056 O Ho: mu = 0.05 Hla: mu > 0.05

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Which set of numbers would correspond to a hypothesis test with the greatest power? O Cohen's d = 0.6 & n = 500 Cohen's d = 0.6 & n = 50 O Cohen's d = 0.5 & n = 50 O Cohen's d = 0.5 & n = 500