According to a Pew Research Center study, in May 2011, 33% of all American adults had asmart phone (one which the user can use to read email and surf the Internet). Acommunications professor at a university believes this percentage is lower among communitycollege students. She selects 357 community college students at random and finds that 129 ofthem have a smart phone. In testing the hypotheses:Ho: p = 0.33 versusHa: p < 0.33Do 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 ahypothesis test.2. Find the standard error.3. Find the z value. --4. Find the p-value.-5. The communication professor shouldthe null hypothesis.

Given,the hypothesis test for one proportion.To answer the 5 sub-parts.

Answered: 1. This is an example of a 2. Find the…

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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Answer quickly please. Need answer ASAP. TRUE or FALSE. No need for long explanation. 21. If p-value < 0.05, then we reject the null hypothesis. 22. The event of heads occurring and tails occurring can never happen simultaneousty in an experiment of tossing a fair coin. The events are said to be independent 23. A sampling frame is a list or map of all the sampling units in the population. 24. A company conducts interviews or focus group discussions to gather information about consumer preferences. The data extracted from these methods are considered primary data. 25. If the regression coefficient B1 is 0.80, then the model explains 80% of the variation in the dependent variable.
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find test statistic and p value. if you can explain how to do it in Stat crunch; extra points. im frustrated.
A consumer advocacy group tests the mean vitamin C content of 50 different brands of bottled juices using, in each case, a t-test of significance in which the null hypothesis is the mean a mount of vitamin C that is on the nutrition facts label for that brand of juice. They find that two of the 50 juice brands have statistically significantly lower Vitamin C than claimed at the 0.05 level. Is this an important discovery? Explain.
Subject : Statestic
57
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State the hypothesis and identify the directional test. In this example, the null hypothesis is Ho = 120,000. You may notice that the hypothesis used the phrase 'greater income' that is associated with greater than. Therefore, H, >120,000. This hypothesis uses inequality symbol (>) so it is one-tailed test and it uses greater than which specifically called for the right-tailed test. Họ : R= 120,000 and Hạ : l>120,000 (right-tailed test) 3. The average waiting time of all costumers in a restaurant before being served is less than 20 minutes. Determine the hypotheses and the directional test. You may notice that the hypothesis used the phrase 'less than' which denotes that the alternative hypothesis is Ha 121 Alternative Hypothesis: 4. The Bureau of Internal Revenue claims that the mean wait time for taxpayers during a recent tax filing is at most 8.7 minutes. A random sample of 11 taxpayers has a mean wait time of 8.7 minutes and a standard deviation of 2.7 minutes. Is there enough…
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19
Using the question above. 1. What are the null and alternative hypothesis B. Find the test statistic, z0 C. Find the p-value
Help with 13 and 14 please

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1. This is an example of a 2. Find the standard error. 3. Find the z value. 4. Find the p-value.[. 5. The communication professor should | hypothesis test. the null hypothesis.