Consider the following hypothesis test:Ho : u = 20H1: u + 20A sample of 200 items will be taken and the population standard deviation is given asO=10.Using a=.05, compute the probability of making a Type II error if the populationmean is 18.Do NOT use EXCELO a) 0.1949b) 0.8949O c) 0.3949(O d) None of the answers are correcte) 0.4949

Answered: Image /qna-images/answer/38e753f4-25d8-4c75-bb99-383429e2f9c0.jpg

Answered: Consider the following hypothesis test:…

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 study was done on body temperatures of men and women. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. a) What are the null and alternative hypothesis? b) What is the test statistic? c) What is the p-value? d) State the conclusion.
Q10. A Random Variable X has an unknown distribution, a known mean of 10 and an unknown variance, oʻ. To test a claim that the distribution is no longer 10, a random sample of 100 of X was collected which gave a sample mean, x of 9.8 and a sample variance, s? = 16. What is the hypothesis testing decision based on this data? A. Reject the Null: x = 10. C. Don’t Reject the Null: µ = 10. B. Don't reject the Null: x = 10 %3D D. Reject the Null: µ = 10. O A. A В. В ОС. С O D. D
pleaseee sir solve question 9 and 10
Find the standardized test statistic, t, to test the claim that p, . Two samples are randomly selected and come from populations that are normal. The sample statistics are given 2 below. Assume that o, to,. n = 11, n2 = 18, x,=5.4, x2 = 5.8, s, = 0.76, s, = 0.51 O A. -1.326 O B. - 2.123 OC. -1.546 O D. -1.821 Next S:47 PM 59 F Clear AE 11/23/2021 P Type here to search PrtSc Insert Delo F7 F8 F9 F10 F11 F12 F3 F4 F5 F6 F1 F2 @ %23 $4 & Bac 1 2 4 6. 8. Q Y + I/ 因 T %#3
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Also this after the 2nd picture. (c) By hand, make a histogram and using this histogram select the correct description of the age at which women have their first child. The distribution is: (d) In which age classes do the median and quartiles fall in the ordered list of all maternal ages? Median falls within: Q1 falls within: Q3 falls within:
65 homeless people in San Jose were asked their age. The sample mean age was 33.2 years. Let x be a random variable representing ages of homeless people in San Jose. Assume that x has a normal distribution and o = 7.3 years. Do the data indicate that the mean age of the population of homeless people in San Jose is less than 35 years old? Use a = 0.05. Identify the following in your answer. 1. Identify the null hypothesis Ho and alternate hypotheses H, for the problem. 2. Identify the sample statistic, test statistic, p-value and calculator key used: Sample Statistic (sample mean) (Stated in problem) = Test Statistic (z) (Round to two decimal places) %3D P-value: (Round to four decimal places) = Calculator key used: 3. Identify the significance level and determine if you reject or fail to reject the null hypothesis. significance level = Do you reject or fail to reject Ho ? 4. State your conclusion. Upload your answer. Remember you can only upload one document. Upload Choose a File
2 Suppose that we assume the population standard deviation is a-Sand we are testing: Ho:p-50 Ha:p>50 Suppose also that we want the following Powers (probability of detection): Power ( =50.25)-.85. Power (,=50.40)-.98. a) How much data is needed to satisfy the first requirement? Answer b) How much data is needed to satisfy the second requirement? )How much data is needed to satisfy both requirements? Aliswer f the blanks and submit
13) For a random variable with mean=10 and standard deviation=2, (show work) a. Find the value that corresponds to z-score=-2.4. b. applying Chebeche's Rule, find value of k such that at least 60% of the measures are within k standard deviation of the mean.
Westjet claims that it's avearage time to fly to Toronto from Thunder Bay is 121 minutes. A random sample of 29 flights from Thunder Bay to Toronto were observed and yeilded a mean of 140 minutes. Assuming that o = 3.1 do we have enough evidence to show that the mean flight is more than 121 minutes? Use a = 0.1 and use our tables. Select the correct null and alternative hypotheses: OA. Ho: X= 140,HA: X 121 OF. Ho X = 140,H₁ : X > 140 OG. None of the above Select the type of distribution to be used in this question: OA. Z-distribution B. t-distribution OC. Chi-Square distribution OD. None of the above The rejection region for this test is: OA. (-∞, -1.28) OB. (1.96,∞) OC. (1.645, ∞) OD. (1.28, ∞) OE. (-∞, -1.96) OF. (-∞, -1.645) OG. (-∞, -1.96) U (1.96,∞) OH. (-∞, -1.28) U (1.28,00) OI. (-∞, -1.645) U (1.645, ∞) OJ. None of the above Test statistic = The conclusion for this test is: OA. Fail to Reject Ho OB. Reject Ho OC. Fail to Reject HA OD. Reject HA OE. None of the above
24)
In conducting a test on the hypotheses Ho: μ = 50 and Ha: μ > 50, you find that the population mean is 55 when it is actually 50. This results in what type of error? O No error ○ Type I error ○ Type II error Standard deviation of the mean O There is not enough information given

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