H1Critical Values for a=0.10Critical Values for a= 0.05O Left-tailedRight-tailedandandO Two-tailedPart: 2 / 3Part 3 of 3Determine whether to reject Ho:(b) Since the test statistic, z= 2.65, (Choose one) v in the critical region, we (Choose one) ▼ H, at the a=0.10 level.(c) Since the test statistic, z= 2.65, (Choose one) v in the critical region, we (Choose one) ▼ H, at the a=0.05 level. A test is made of Ho: H= 17 versus H,: µ# 17. A sample of size n= 50 is drawn, and x =20. The population standard deviation is o=8.0,(a) Compute the value of the test statistic z.(b) Is Ho rejected at the a= 0.10 level?(c) Is Ho rejected at the a=0.05 level?Part: 0/ 3Part 1 of 3(a) Compute the value of the test statistic. Round the answer to at least two decimal places.11

Here Given Sample size=n=50 Sample mean=X¯=20 Population SD=σ=8 Hypothesis H0::μ=17Ho:u≠17

Answered: A test is made of Ho: =17 versus H,: u#…

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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1) Your instructor tells you that past average scores for the final exam are 75%. But this semester he has been using online quizzes to help your class better prepare for the final. Your class scored the following on the final exam: mean= 80% with a 10% standard deviation. There are 49 people in your class. Using a one-sample t test, what is your t score for this class? Assuming α = .05, did the online quizzes help your class perform better?
A random sample of 90 eighth grade students' scores on a national mathematics assessment test has a mean score of 288. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 280. Assume that the population standard deviation is 36. At α = 0.08, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify Ho and H₂. Choose the correct answer below. A. Ho: μ = 280 (claim) Ha:μ>280 Ho:μ≤280 Ha: μ> 280 (claim) B. Ho: μ = 280 P-value = (b) Find the standardized test statistic z. z = 2.11 (Round to two decimal places as needed.) (c) Find the P-value. E. Ho: μ≤280 (claim) Ha:μ>280 Ha: μ> 280 (claim) (Round to three decimal places as needed.) C. Ho: μ ≥280 (claim) Ha:μ< 280 F. Ho: μ< 280 H₂:μ ≥280 (claim)
To test Ho: o=2.4 versus H₁: o>2.4, a random sample of size n = 16 is obtained from a population that is known to be normally distributed. Complete parts (a) through (d). www (a) If the sample standard deviation is determined to be s = 2.2, compute the test statistic. x=(Round to three decimal places as needed.) A Clear all Check answer Help me solve this View an example Get more help - 2:12 PM *D $ 3 6/18/2022 # Type here to search Q E 4 R F T 6 B 20 U 8 hp 1 K a O P 96°F Mostly sunny 3
Suppose the mean IQ score of people in a certain country is 100. Suppose the director of a college obtains a simple random sample of 39 students from that country and finds the mean IQ is 104.5 with a standard deviation of 13.6. Complete parts (a) through (d) below. (a) Consider the hypotheses Ho: µ= 100 versus H,: µ> 100. Explain what the director is testing. Perform the test at the a = 0.10 level of significance. Write a conclusion for the test. Explain what the director is testing. Choose the correct answer below. O A. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually not equal to 100. OB. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually greater than 100. O C. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually not greater than 100. O D. The director is testing if the sample provided sufficient…
what is the value of (M-m)?
Suppose the mean IQ score of people in a certain country is 103. Suppose the director of a college obtains a simple random sample of 37 students from that country and finds the mean IQ is 107.4 with a standard deviation of 13.8. Complete parts (a) through (d) below. (a) Consider the hypotheses Ho: H= 103 versus H: u> 103. Explain what the director is testing. Perform the test at the a = 0.01 level of significance. Write a conclusion for the test. Explain what the director is testing. Choose the correct answer below. A. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually greater than 103. B. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually not equal to 103. O C. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually equal to 103. O D. The director is testing if the sample provided sufficient evidence that…
H0:μ=41.92H0:μ=41.92H1:μ≠41.92H1:μ≠41.92Your sample consists of 43 subjects, with a mean of 42 and standard deviation of 1.56.Calculate the test statistic, rounded to 2 decimal places. t=
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A test is made of Ho: =17 versus H,: u# 17. A sample of size n= 50 is drawn, and x = 20. The population standard deviation iso=8, (a) Compute the value of the test statistic z. (b) Is Ho rejected at the a=0.10 level? (c) Is Ho rejected at the a=0.05 level?