Suppose you have a friend that thinks at least a quarter (25% or 0.25) of all US adults believe in ghosts. Thus, the null hypothesis would be, HO: p = 0.25Suppose a telephone survey of 1000 randomly selected US adults found that 0.31 or 31% of them say they believe in ghosts.If the null hypothesis is true, the uncertainty or Standard Error in this sample proportion = 0.014Based on this information, what is the value for the Z-statistic in this hypothesis test? (Round your answer to two decimal places.)Answer:

Answered: Image /qna-images/answer/e5abe32a-4973-4370-b349-d9288691e8c0.jpg

Answered: Suppose you have a friend that thinks…

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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In 2002, the General Social Survey Conducted by StatsSa, participants was asked the following questions. :1. Do you favour or oppose the death of penalty for persons convicted of murder? 2. Do you think the use of marijuana should be made legal or not? If you want to know if there is a relationship between death penalty and marijuana beliefs, what hypotheses should you test? If the Chi-square test statistic = 0.287,what is the appropriate conclusion?
The proportion of commuters on is purported to be 65%. A professor believes this to be inaccurate. He randomly selects 300 students on campus and determines 200 of them to be commuters. Can the professor reject the campus claim of 65%? Write the hypotheses for this scenario. Is this one tailed or two tailed? Why? What statistical test would be used for this scenario? Explain why.
When the 2000 GSS asked whether human beings developed from earlier species of animals, 53.8% of 1095 respondents answered that this was probably or definitely not true. Question: What is the null and alternative hypothesis for this question
8
If a fair coin is tossed 10 times what is the probabilty that the first five are the same side? Ans. 1/16 .25%.
Construct a 90% confidence interval of the population proportion using the given information. x=240, n=300
Your teacher claims to produce random numbers from 1 to 5 (inclusive) on her calculator, but you’ve been keeping track. In the past 80 rolls, the number “five” has come up only 8 times. You suspect that the calculator is producing fewer fives than it should. Let p = actual long-run proportion of five’s produced by the calculator. The hypotheses for testing the teacher’s claim are:
When we test the hypothesis that the population proportions are equal, we can use the Z test for a one-sided as well as a two-sided alternative. Select one: a. False b. True C. Not sure
what do part b and part f say? I'm unsure what all the words say.
A decade-old study found that the proportion of high school who felt that ‘getting rich was an important personal goal was 75%. Suppose that we have reason to believe that this proportion has changed., and we wish to carry out a hypothesis test to see if our belief can be supported. State the thanks hypothesis H0 and the alternative H1 that we would use for this test.
The mall has a set of data with employee age (X) and the corresponding number of annual on-the-job-accidents(Y). Analysis on the set finds that the regression equation is Y=100-3X. What is the likely number of accidents for someone aged 30? 97 100 10 none of the above
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.

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