When the following hypotheses are being tested at a level of significance of aHo: P2 100H3: H< 100the null hypothesis will be rejected if the test statistic Z isa.<-Za/2b. <-ZaO. >ZaO d. > Za/2

Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Answered: When the following hypotheses are being…

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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5,6,7
One personality test available on the World Wide Web has a subsection designed to assess the "honesty" of the test-taker. You are interested in the mean score, μ, among the general population on this subsection. The website reports that μ is 142, but you have good reason to believe that μ differs from 142. You decide to do a statistical test. You choose a random sample of people and have them take the personality test. You find that their mean score on the subsection is 146 and that the standard deviation of their scores is 28. Based on this information, complete the parts below. (a) What are the null hypothesis Ho and the alternative hypothesis H₁ that should be used for the test? H₂:0 H₁ (b) Suppose that you decide not to reject the null hypothesis. What sort of error might you be making? (Choose one) Type I (c) S Type II Type I error. jean score among the general population on the subsection is 142. Fill in the blanks to describe a μ OO 0=0 0#0 5
The phones produced in factory A have a lifespan of 3000 days. The phones produced in factory B have a lifespan of 2500 days. A sample of 100 telephones was taken from factories A and B. Since the standard error of the difference between the sample averages of the 32 - phone lifetimes is 33.54, what is the probability that the mean of the sample from factory A will be more than 600 days from the mean of the sample from factory B? O a) 0.345 O B) 0.0052 C) 0.085 O D) 0.0014 TO) 0.638
There are 3 blue and 2 red balls in a bag. The y random variable is the number of blue balls drawn from the bag and is the hypergeometric variable. Two balls are drawn at random. a)Calculate the variance and mean for the y variable. b)Calculate the probability that both selected balls will come blue.
YES or NO1. Are the data in Kruskal-Wallis h test: a) continuous b) normal c) accepts outliers d) the homogeneity of the variance is signifcant 2. Independent t-test a) continuous b) normal c) accepts outliers d) the homogeneity of the variance is signifcant
Suppose the heights of Australian adult males are normally distributed with a population mean of 174 cm and a population variance of 25 cm2. Let X denote the height of a randomly selected Australian adult male. a)State the distribution for the height of a randomly selected Australian adult male, in conventional statistical b)What is the probability that a randomly selected Australian adult male will have a height less than 176 cm? c)What is the probability that a randomly selected Australian adult male will have a height in between 168 cm and 173 cm?
Which of the following is a requirement that must be true in order to run a t-test over a z-test? a) the standard deviations for both populations must be known b) the standard deviations should come from each sample c) if the sample sizes are less than 30, the populations need to be approximately normal d) the populations must be approximately normal
YES or NO1. Are the data in one-sample t-test: a) continuous b) normal c) accepts outliers d) the homogeneity of the variance is signifcant 2. Mann–Whitney U test a) continuous b) normal c) accepts outliers d) the homogeneity of the variance is signifcant
The mean and st deviation of 2 balls is given Ball1 ball2 Mean 4.2 3.4 St dev 1.4 1.6 Which of the ball is heavier Ball1 Ball2 Both are of same weight
3356)?545)))77
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Suppose that average male weight in the US is 175 pounds with a standard deviation of 25 pounds. Suppose you randomly select 1,000 male Americans and ask their weight, and average the 1,000 numbers to compute a sample mean X. a) What does the law of large numbers tell you about X, the average of the 1,000? Be precise in your answer using about 1 to 3 sentences.

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When the following hypotheses are being tested at a level of significance of a Ho: P2 100 Ha: H< 100 the null hypothesis will be rejected if the test statistic Z is a. <-Za/2 O b. <-Za O c. > Za O d. > Za/2