Tests the claim that 41 < µ2. Assume the samples are normally distributed, random and independent.$1 = 0.66; s2 = 0.75I1 = 34.68 ; I2 = 35.04n1 = 23; n2 = 20Standard Errort-Test StatisticDegrees of Freedom(21 – E2) – (H1 - H2)Smaller of (n1 - 1) or (n2 - 1)S-2 =n1n2a. Calculate the Standard Error s-i, =(use 3 decimal places)b. Calculate the t-test statistic using the standard error from part a. t =(use 2 decimal places)c. What are the degrees of freedom? df =d. At a = 0.02 , Use the distribution table to find the critical values for the rejection regionた=(use 4 decimal places)

Answered: Image /qna-images/answer/bfab44f5-fd6f-4be8-8e3c-4370585247fc.jpg

Answered: Tests the claim that 41 < p2. Assume…

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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q12- Random samples of size 12 are taken from an infinite population whose mean is 160 and standard deviation is 174.2. The standard error of the sample mean is: a. 50.29 b. 60.34 c. 75.43 d. 14.52
Q scores are normally distributed with a mean of 95 and a standard deviation of 18. Assume that many samples of size n are taken from a large population of people and the mean IQ score is computed for each sample. a. If the sample size is n=81, find the mean and standard deviation of the distribution of sample means. The mean of the distribution of sample is __ The standard deviation of the distribution of sample means is__ (type an integer or decimal rounded to the nearest tenth as needed) b. If the sample size is n=169, find the mean and standard deviation of the distribution of sample means. The mean of distribution of sample means is __ The standard deviation of the distribution of sample means is __ (type an iteger or decimal rounded to the nearest tenth as needed) c. Why is the standard deviation in part A. different from the standard deviation in part B? Choose the correct answer below A. With smaller sample sizes (as in part a), the means tend to be further apart, so they have…
a A2 The sample of size n=87 Is drawn From a population whose standard deviation 189 Find The margin of ERROV for a 90%. Confieuence Interat
22
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Samples of size n- 9 are selected from a normal population withp -80with o- 18. What is the standard error for the distribution of sample means? OM-5 OM- 18 O M- 6 0 0
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K 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. Complete parts (a) and (b) below. e this 2 Z a. Use a 0.05 significance level to test the claim that men have a higher mean body temperature than women. What are the null and alternative hypotheses? OA Ho: Hy #₂ H₂: Hy H₂ F2 淋 X command дв 3 80 F3 E D с $ 4 R F % 5 V T G 6 B MacBook Air Y H & 7 N F7 U J * 8 M OB. Ho: ₁2₂ H₁: Hy t : - ; H n X S option Clear all F11 { [ Men H₁ 11 97.64°F 0.77 F ? 1 + = 11 I Check answer 4) F12 Women H₂ 59 97.45°F 0.63°F } ] delete ▼ return shift drew
K A study was done on proctored and nonproctored tests. 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. Ho H1 H2 H₁ H₁ H₂ ỌC. Hồ Hi-12 H₁: Hy > H₂ 0 в. Но 141=12 H₁ H₁ H₂ O D. Ho 11 #₂2 H₁ H1 H₂ The test statistic, t, is (Round to two decimal places as needed) The P-value is (Round to three decimal places as needed.) State the conclusion for the test. Proctored Nonproctored H 144 n 34 CIXS 77.58 11.08 12 31 81.91 21.24 A. Reject Ho There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. OB. Fail to reject Ho. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. C. Fail to reject Ho. There is not sufficient evidence to support the…
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