Homework Help is Here – Start Your Trial Now!
Math
Statistics
A manager is interested in determining if the population standard deviation has dropped below 128. Based on a sample of n = 23 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.10 significance level. The sample standard deviation is 115. Determine the null and alternative hypotheses. ОА. Но: о2 < 128 HA: 02 2 128 О В. Но: о2 < 16,384 HA: o2 2 16,384 ОС. Но: о2 2 16,384 На: о2 < 16,384 O D. Ho: o2 = 128 HA: 02 128 State the decision rule. Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. (Round to four decimal places as needed.) O A. If the test statistic, x > x²,2 = reject H, or if the test statistic, x² xá = reject Ho. Otherwise, do not reject Ho- Find the test statistic, 2. (Round to two decimal places as needed.) Choose the correct conclusion below. O A. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 128. O B. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 128. OC. Reject Ho. There is sufficient evidence that the population standard deviation is less than 128. O D. Reject Ho: There is insufficient evidence that the population standard deviation is less than 128.

A manager is interested in determining if the population standard deviation has dropped below 128. Based on a sample of n = 23 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.10 significance level. The sample standard deviation is 115. Determine the null and alternative hypotheses. ОА. Но: о2 < 128 HA: 02 2 128 О В. Но: о2 < 16,384 HA: o2 2 16,384 ОС. Но: о2 2 16,384 На: о2 < 16,384 O D. Ho: o2 = 128 HA: 02 128 State the decision rule. Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. (Round to four decimal places as needed.) O A. If the test statistic, x > x²,2 = reject H, or if the test statistic, x² xá = reject Ho. Otherwise, do not reject Ho- Find the test statistic, 2. (Round to two decimal places as needed.) Choose the correct conclusion below. O A. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 128. O B. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 128. OC. Reject Ho. There is sufficient evidence that the population standard deviation is less than 128. O D. Reject Ho: There is insufficient evidence that the population standard deviation is less than 128.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
See similar textbooks
icon
Related questions
Topic Video
Question
A manager is interested in determining if the population standard deviation has dropped below 128. Based on a sample of n= 23 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.10 significance level. The sample standard deviation is 115. Determine the null and alternative hypotheses. O A. Ho: o2 < 128 На: а2 2 128 О В. Но о2 < 16,384 HA: 02 2 16,384 О с. Но: о2 > 16,384 HA: 02 < 16,384 O D. Ho: o2 = 128 HA: 02 + 128 State the decision rule. Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. (Round to four decimal places as needed.) O A. If the test statistic, x2 > x212 reject H, or if the test statistic, x <x4 -a/2 reject Ho. Otherwise, do not reject Ho. O B. If the test statistic, x <x-a reject Ho. Otherwise, do not reject Ho. OC. If the test statistic, y2 > x = reject Ho. Otherwise, do not reject Ho- Find the test statistic, x (Round to two decimal places as needed.) Choose the correct conclusion below. O A. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 128. O B. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 128. O C. Reject Ho. There is sufficient evidence that the population standard deviation is less than 128. O D. Reject Ho. There is insufficient evidence that the population standard deviation is less than 128.
Transcribed Image Text:A manager is interested in determining if the population standard deviation has dropped below 128. Based on a sample of n= 23 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.10 significance level. The sample standard deviation is 115. Determine the null and alternative hypotheses. O A. Ho: o2 < 128 На: а2 2 128 О В. Но о2 < 16,384 HA: 02 2 16,384 О с. Но: о2 > 16,384 HA: 02 < 16,384 O D. Ho: o2 = 128 HA: 02 + 128 State the decision rule. Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. (Round to four decimal places as needed.) O A. If the test statistic, x2 > x212 reject H, or if the test statistic, x <x4 -a/2 reject Ho. Otherwise, do not reject Ho. O B. If the test statistic, x <x-a reject Ho. Otherwise, do not reject Ho. OC. If the test statistic, y2 > x = reject Ho. Otherwise, do not reject Ho- Find the test statistic, x (Round to two decimal places as needed.) Choose the correct conclusion below. O A. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 128. O B. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 128. O C. Reject Ho. There is sufficient evidence that the population standard deviation is less than 128. O D. Reject Ho. There is insufficient evidence that the population standard deviation is less than 128.
Expert Solution
steps

Step by step

Solved in 4 steps with 4 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Means
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS