7,7.5 Solve all parts clearly please (b) Find the critical value(s).(Use a comma to separate answers as needed. Round to three decimal places as needed.)Identify the rejection region(s).Oc.(c) Use the y2-test to find the standardized test statistic.(Round to three decimal places as needed.)(d) Decide whether to reject or fail to reject the null hypothesis.RejectFail to reject(e) Interpret the decision in the context of the original claim.O A. Since the null hypothesis is not rejected, the new equipment appears to bemore effective.B. Since the null hypothesis is not rejected, the new equipmentdoes not appear to be more effective.OC. Since the null hypothesis is rejected, the new equipment appears to bemore effective.D. Since the null hypothesis is rejected, the new equipment does not appear tobe more effective. Quarters are currently minted with weights normally distributed and having a standard deviation of 0.068. New equipment is being tested in an attempt to improve quality byreducing variation. A simple random sample of 21 quarters is obtained from those manufactured with the new equipment, and this sample has a0.045. Use a 0.05 significance level to test the claim that quarters manufactured with the new equipment have weights with a standard deviation less than 0.068. Does thestandard deviation ofnew equipment appear to be effective in reducing the variation of weights?(a) Write the claim mathematically and identify Ho and Ha.O A. Ho: os0.068 (Claim); Hai> 0.068O B. Ho: o20.068; H3: o < 0.068 (Claim)O C. Ho: o20.068 (Claim); H3: o < 0.068O D. Ho: os0.068; Ha: o > 0.068 (Claim)(b) Find the critical value(s).(Use a comma to separate answers as needed. Round to three decimal places as needed.)

Given : n=21 , s=0.045 , σ =0.068 , α=0.05 The degrees of freedom is , df=n-1=21-1=20 We want to…

Answered: claim that quarters manufactured with…

claim that quarters manufactured with the new equipment have weights with a standard deviation less than 0.068. ueiehte?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

7,7.5 Solve all parts clearly please

(b) Find the critical value(s).
(Use a comma to separate answers as needed. Round to three decimal places as needed.)
Identify the rejection region(s).
Oc.
(c) Use the y2-test to find the standardized test statistic.
(Round to three decimal places as needed.)
(d) Decide whether to reject or fail to reject the null hypothesis.
Reject
Fail to reject
(e) Interpret the decision in the context of the original claim.
O A. Since the null hypothesis is not rejected, the new equipment appears to be
more effective.
B. Since the null hypothesis is not rejected, the new equipment
does not appear to be more effective.
OC. Since the null hypothesis is rejected, the new equipment appears to be
more effective.
D. Since the null hypothesis is rejected, the new equipment does not appear to
be more effective.

Quarters are currently minted with weights normally distributed and having a standard deviation of 0.068. New equipment is being tested in an attempt to improve quality by
reducing variation. A simple random sample of 21 quarters is obtained from those manufactured with the new equipment, and this sample has a
0.045. Use a 0.05 significance level to test the claim that quarters manufactured with the new equipment have weights with a standard deviation less than 0.068. Does the
standard deviation of
new equipment appear to be effective in reducing the variation of weights?
(a) Write the claim mathematically and identify Ho and Ha.
O A. Ho: os0.068 (Claim); Hai> 0.068
O B. Ho: o20.068; H3: o < 0.068 (Claim)
O C. Ho: o20.068 (Claim); H3: o < 0.068
O D. Ho: os0.068; Ha: o > 0.068 (Claim)
(b) Find the critical value(s).
(Use a comma to separate answers as needed. Round to three decimal places as needed.)

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