In a recent Super Bowl, a TV network predicted that 84 % of the audience would express an interest inseeing one of its forthcoming television shows. The network ran commercials for these shows during theSuper Bowl. The day after the Super Bowl, and Advertising Group sampled 61 people who saw thecommercials and found that 49 of them said they would watch one of the television shows.Suppose you are have the following null and alternative hypotheses for a test you are running:Ho:p: = 0.84Ha:p 0.84Calculate the test statistic, rounded to 3 decimal places2 =

The provided information is x=49 n=61 The sample proportion is p^=xn=4961=0.803The null and…

Answered: In a recent Super Bowl, a TV network…

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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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…
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.
According to a Pew Research Center study, in May 2011, 33% of all American adults had a smart phone (one which the user can use to read email and surf the Internet). A communications professor at a university believes this percentage is lower among community college students. She selects 352 community college students at random and finds that 122 of them have a smart phone. In testing the hypotheses: Ho: p= 0.33 versus Ha: p < 0.33 Do the hypothesis test. Use a level of significance of a = 0.05; Use the unrounded values in Excel to find the answers for #3 and #4. 1. This is an example of a hypothesis test. 2. Find the standard error. 3. Find the z value. 4. Find than
Some people claim that they can tell the difference between a diet soda and a regular soda in the first sip. A researcher wanting to test this claim randomly sampled 84 such people. She filled 84 plain white cups with soda, half diet and half regular through random assignment, and asked each person to take one sip from their cup and identify the soda as diet or regular. 51 participants correctly identified the soda. Conduct and interpret a hypothesis test for the following question: are these people any better or worse at telling the difference between diet and regular soda than random guessing (correctly identify soda half of the time)? HINT: what is your hypothesized proportion if you want to test if these participants are right or not half of the time? Use a = .01 significance level. Solve Critical value:
A poll done for Newsweek found that 13% of Americans have seen or sensed the presence of an angel. A contingent doubts that the percent is really that high. It conducts its own survey. Out of 76 Americans surveyed, only two had seen or sensed the presence of an angel. As a result of the contingent’s survey, would you agree with the Newsweek poll? Perform a hypothesis test, using the five-step process, to test whether the proportion of Americans who have seen or sensed the presence of an angel is less than 13%.
According to a Pew Research Center study, in May 2011, 33% of all American adults had a smart phone (one which the user can use to read email and surf the Internet). A communications professor at a university believes this percentage is lower among community college students. She selects 352 community college students at random and finds that 122 of them have a smart phone. In testing the hypotheses: Ho: p= 0.33 versus Ha: p < 0.33 Do the hypothesis test. Use a level of significance of a = 0.05; Use the unrounded values in Excel to find the answers for #3 and #4. 4. Find the p-value.-- 5. The communication professor should the null hypothesis.
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In a recent Super Bowl, a TV network predicted that 50 % of the audience would express an interest in seeing one of its forthcoming television shows. The network ran commercials for these shows during the Super Bowl. The day after the Super Bowl, and Advertising Group sampled 89 people who saw the commercials and found that 45 of them said they would watch one of the television shows.Suppose you are have the following null and alternative hypotheses for a test you are running: H0: p=.5 Ha: p>.5
In a recent Super Bowl, a TV network predicted that 40 % of the audience would express an interest in seeing one of its forthcoming television shows. The network ran commercials for these shows during the Super Bowl. The day after the Super Bowl, and Advertising Group sampled 119 people who saw the commercials and found that 42 of them said they would watch one of the television shows. Suppose you are have the following null and alternative hypotheses for a test you are running: Ho: p = 0.4 Ha:p <0.4 Calculate the test statistic, rounded to 3 decimal places 2 =
8.2-3 answer c pls
In a recent Super Bowl, a TV network predicted that 49 % of the audience would express an interest in seeing one of its forthcoming television shows. The network ran commercials for these shows during the Super Bowl. The day after the Super Bowl, and Advertising Group sampled 98 people who saw the commercials and found that 50 of them said they would watch one of the television shows. Suppose you are have the following null and alternative hypotheses for a test you are running: Ho:p = 0.49 Ha:p > 0.49 Calculate the test statistic, rounded to 3 decimal places 2
It has recently been claimed that 25% of adults consider spring to be their favorite season of the year. A researcher is skeptical of this claim and believes this percentage is too low. She surveys a random of 1,000 adults and finds that 390 of these adults consider spring to be their favorite season of the year. As she prepares to conduct a hypothesis test, the researcher writes out her alternative hypothesis as “p < 0.25.” What is wrong with this? The alternative hypothesis should be “p > 0.39.” The alternative hypothesis should be “p < 0.39.” The alternative hypothesis should be “p > 0.25.” The alternative hypothesis should be “p = 0.25.” Nothing is wrong with the given alternative hypothesis.

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