18. What is the decision rule for the hypothesis test stated in the preamble of Section E?We reject Ho if t ≤ −1.7056 or t ≥ 1.7056We reject Ho if t ≥ −2.0595 and t ≤ 2.0595We reject Ho if t ≤ -2.0595 or t≥ 2.0595O We reject Ho if t ≤ -1.7801 or t≥ 1.7801 Section E: The IQ scores of a sample of 15 boys randomly selected from the population of fifteen year-old boys inVictoria were recorded, and the sample mean and sample standard deviation from this sample were 106 and 4,respectively. The IQ scores of a sample of 12 girls randomly selected from the population of fifteen year-old girls inVictoria were recorded, and the sample mean and sample standard deviation from this sample were 114 and 5,respectively. Let μ₁ denote the mean IQ score for fifteen year-old boys in Victoria and let µ₂ denote the mean IQ scorefor fifteen year-old girls in Victoria. Researchers want to test, at the 5% level of significance, the null hypothesis-Ho: M1- µ2 = −1 vs the alternative hypothesis Ha : µ₁ − µ₂ −1. Assume the population standard deviations ofthe two groups are equal and that the assumptions of a two-independent sample t-test are satisfied. Answer thefollowing questions.

Given Information: Boys: Sample size n1=15 Sample mean x¯1=106 Sample standard deviation s1=4 Girls:…

Answered: 18. What is the decision rule for 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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11
Suppose that BC financial aid allots a textbook stipend by claiming that the average textbook at BC bookstore costs $$50.52. You want to test this claim. The null and alternative hypothesis in symbols would be: H0:μ≤50.52H0:μ≤50.52 H1:μ>50.52H1:μ>50.52 H0:p≥50.52H0:p≥50.52 H1:p<50.52H1:p<50.52 H0:μ=50.52H0:μ=50.52 H1:μ≠50.52H1:μ≠50.52 H0:μ≥50.52H0:μ≥50.52 H1:μ<50.52H1:μ<50.52 H0:p=50.52H0:p=50.52 H1:p≠50.52H1:p≠50.52 H0:p≤50.52H0:p≤50.52 H1:p>50.52H1:p>50.52The null hypothesis in words would be:The average price of textbooks in a sample is $$50.52The average of price of all textbooks from the store is greater than $$50.52.The proportion of all textbooks from the store that are less than 50.52 is equal to 50%The average of price of all textbooks from the store is less than $$50.52.The average price of all textbooks from the store is $$50.52Based on a sample of 170 textbooks at the store, you find an average of 50.72 and a standard deviation of 22.6. The point…
AVOVA Is used to test on which hypothesis? OA. Họ: Hi = P2 H1: p * 12 B. H1: not all p are equal C. H1: not all p, are equal O D. All of of above Reset Selection
Consider the following hypothesis test: Ho : p 0.67 The p-value is equal to 0.012. Use a 0.05. The conclusion is: Select one: a. We reject Ho and we conclude that p > 0.67. O b. We accept H, and we conclude that p > 0.67. c. We reject Ho and we conclude that p< 0.67. O d. We accept Ho and we conclude thatp<0.67.
II. calculate the probabil ities 1. P(0
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Test the claim that a population mean salary in a town is more than $62000. A random sample of 24 salaries yields = $62171.46 and s = $1400. Use a = 0.10. 1. The population distribution requirement for this test is: O Need a normally distributed population since this is a T-test O Need a normally distributed population since n 30 O None since this is a Z-test Coa The hypotheses are: O Ho:p > 62000; Ha:p 62000; Ha:u 62000 O Ho:p = 62000; Ha:p + 62000 O Ho: u = 62000; Ha:µ 62000 O Ho:p 62000 2. This is a O twoO rightO left tailed test and the distribution used is OT since o not known OZ since testing a proportion Oz since o known The Degrees of Freedom are O 23 ON/A; this is a Z-test O 24 3. The STS (round to 3 decimals) is: MacBook Air B00 O00 F4 F2 F3 F5 F6 F7 F8 F9 %23 4 く

The time taken for healthy Canadian adults to complete a logic problem is believed to be Normally distributed with mean 40 seconds and standard deviation 4 seconds. It is of interest to investigate whether UBC students perform better on average than healthy adult Canadians, so the logic problem is given to a sample of 80 UBC students, and their times to solution are recorded. Part a) Which of the following is/are parameter(s) of interest with respect to the new investigation here? (Select all that apply) NA. 40 seconds O B. 4 seconds OC. The variance of the times for all UBC students to complete the logic problem. O D. The mean time for all UBC students to complete the logic problem. O E. The mean time for the 80 UBC students to complete the logic problem. OF. 80 OG. None of the above Part b) In testing a hypothesis about a parameter of interest, what would your null hypothesis be? O The mean time taken to solve the logic problem by healthy Canadian adults is 40 seconds. O The mean…
7 - Null hypothesis is x >4, what is alternative hypothesis? a.X≠4 b.X>4 c.X≤4 d.X<4
Which of the following are the appropriate null and alternative hypothesis? Η := 157, ΗΑ :# 157 Η : μ = 157, HA : μ 145 Η : μ = 157, HA : μ > 157 Η : μ = - 145, HA : μ < 145
Determine whether to reject or fail to reject Ho at the level of significance of a) a = 0.09 and b) a = 0.02. Ho: H=127, Ha: 127, and P=0.0371. a) Do you reject or fail to reject Ho at the 0.09 level of significance? O A. Fail to reject Ho because P 0.09. O D. Fail to reject Ho because P>0.09. -C

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18. What is the decision rule for the hypothesis test stated in the preamble of Section E? O We reject Ho if t ≤ −1.7056 or t ≥ 1.7056 We reject Hå if t ≥ −2.0595 and t ≤ 2.0595 We reject Ho if t ≤ −2.0595 or t≥ 2.0595 O We reject Ho if t ≤ −1.7801 or t ≥ 1.7801