The human resources department of a major corporation announced that the number of people interviewed by the corporation in one month has a mean of 101and a variance, oʻ, of 266. The management of the corporation suspects that the variance exceeds 266. A random sample of 10 months yielded a mean of 105interviews, with a variance of 378. If we assume that the number of people interviewed by the corporation in one month follows an approximately normaldistribution, is there enough evidence to conclude, at the 0.1 level of significance, that the management's claim is correct?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places and round your answers as specified below. (If necessary, consult a list of formulas.)(a) State the null hypothesis H, and the alternative hypothesis H,.pH. :0H, :0(b) Determine the type of test statistic to use.(Choose one) ▼O=0OSO(c) Find the value of the test statistic. (Round to three or more decimal places.)O

a). Given: n=10x¯=105s2=378σ2=266 The null hypothesis states that population variance is equal to…

State the null hypothesis H, and the alternative hypothesis H1. Ho :0 H :0 Determine the type of test statistic to use. |(Choose one) ▼ O=0 OSO Find the value of the test statistic. (Round to three or more decimal places.) O

State the null hypothesis H, and the alternative hypothesis H1. Ho :0 H :0 Determine the type of test statistic to use. |(Choose one) ▼ O=0 OSO Find the value of the test statistic. (Round to three or more decimal places.) O

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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Question

100%

The human resources department of a major corporation announced that the number of people interviewed by the corporation in one month has a mean of 101
and a variance, oʻ, of 266. The management of the corporation suspects that the variance exceeds 266. A random sample of 10 months yielded a mean of 105
interviews, with a variance of 378. If we assume that the number of people interviewed by the corporation in one month follows an approximately normal
distribution, is there enough evidence to conclude, at the 0.1 level of significance, that the management's claim is correct?
Perform a one-tailed test. Then complete the parts below.
Carry your intermediate computations to three or more decimal places and round your answers as specified below. (If necessary, consult a list of formulas.)
(a) State the null hypothesis H, and the alternative hypothesis H,.
p
H. :0
H, :0
(b) Determine the type of test statistic to use.
(Choose one) ▼
O=0
OSO
(c) Find the value of the test statistic. (Round to three or more decimal places.)
O<O
(d) Find the p-value. (Round to three or more decimal places.)
(e) Can we support the claim that the variance of number of people interviewed
by the corporation in one month exceeds 266?
O Yes ONo

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