Use the following information to complete steps (a) through (d) below. A random sample of size n, = 31 results in a sample mean of 125.3 and a sample standard deviation of 8.5. An independent sample of size n, = 50 results in a sample mean of 131.8 and sample standard deviation of 7.3. Does this constitute sufficient evidence to conclude that the population means differ at the ¤ = 0.05 level of significance? O A. A hypothesis test regarding the difference of two means using a matched-pairs design. O B. Ahypothesis test regarding the difference between two population proportions from independent samples. O C. A hypothesis test regarding two population standard deviations. OD. A hypothesis test regarding the difference of two means using Welch's approximate t. (b) Determine the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H1 = HHq>H2 O B. Ho: H1 SH2HH1# H2 c. Họ: H1 =H2; Hq:H1 # H2 O D. Ho: H1 = 2; Hq: µ1 SH2 (c) Use technology to calculate the P-value. (Round to three decimal places as needed.)

Use the following information to complete steps (a) through (d) below. A random sample of size n, = 31 results in a sample mean of 125.3 and a sample standard deviation of 8.5. An independent sample of size n, = 50 results in a sample mean of 131.8 and sample standard deviation of 7.3. Does this constitute sufficient evidence to conclude that the population means differ at the ¤ = 0.05 level of significance? O A. A hypothesis test regarding the difference of two means using a matched-pairs design. O B. Ahypothesis test regarding the difference between two population proportions from independent samples. O C. A hypothesis test regarding two population standard deviations. OD. A hypothesis test regarding the difference of two means using Welch's approximate t. (b) Determine the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H1 = HHq>H2 O B. Ho: H1 SH2HH1# H2 c. Họ: H1 =H2; Hq:H1 # H2 O D. Ho: H1 = 2; Hq: µ1 SH2 (c) Use technology to calculate the P-value. (Round to three decimal places as needed.)

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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