Alight bulb manufacturer quarantees that the mean life of a certain type of light bulb is at least 754 hours. A random sample of 22 light bulbs has a mean life of 742 hours. Assume the population is normally distributed and the population standard deviation is 56 hours. At a= 0.08, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. O A. Ho: =742 O B. Ho OC. Ho H<742 (claim) 754 H u#742 (daim) H, us754 (dlaim) H, p2742 OF. Ho p4754(dlaim) VE. Ho H u<754 O D. Ho: us742 754 (claim) H u>742 (claim) H, p= 754 (b) Identify the critical value(s). Use technology. (Use a comma to separate answers as needed. Round to two 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
icon
Related questions
Topic Video
Question
pis
7.2.40-T
Assigned Media v
Question Help ▼
Alight bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 754 hours. A random sample of 22 light bulbs has a mean life of 742 hours. Assume the population is normally distributed and the
population standard deviation is 56 hours. At a= 0.08, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e).
(a) Identify the null hypothesis and alternative hypothesis.
O A. H H=742
O B. H, µ>754
O C. Ho: µ<742 (claim)
Ha H#742 (claim)
H, µs754 (claim)
H µ742
D. H μs742
E. Ho µ2754 (claim)
OF. Ho: u#754(claim)
Ha p>742 (claim)
H p<754
H3 µ= 754
(b) Identify the critical value(s). Use technology.
(Use a comma to separate answers as needed. Round to two decimal places as needed.)
Enter your answer in the answer box and then click Check Answer.
Check Answer
Clear All
3 parts
remaining
12:54 PM
49% A O
1/14/2021
3
L
O Type here to search
PriSc
Delete
F12
F11
F10
F9
F8
F7
F5
F6
Backs
F4
F3
Esc
F1
69
23
4
5
2
R\
Tab
K
G
S
CapsLk
B
C
Z.
Shift
FL
Transcribed Image Text:pis 7.2.40-T Assigned Media v Question Help ▼ Alight bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 754 hours. A random sample of 22 light bulbs has a mean life of 742 hours. Assume the population is normally distributed and the population standard deviation is 56 hours. At a= 0.08, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. O A. H H=742 O B. H, µ>754 O C. Ho: µ<742 (claim) Ha H#742 (claim) H, µs754 (claim) H µ742 D. H μs742 E. Ho µ2754 (claim) OF. Ho: u#754(claim) Ha p>742 (claim) H p<754 H3 µ= 754 (b) Identify the critical value(s). Use technology. (Use a comma to separate answers as needed. Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Check Answer Clear All 3 parts remaining 12:54 PM 49% A O 1/14/2021 3 L O Type here to search PriSc Delete F12 F11 F10 F9 F8 F7 F5 F6 Backs F4 F3 Esc F1 69 23 4 5 2 R\ Tab K G S CapsLk B C Z. Shift FL
Expert Solution
steps

Step by step

Solved in 3 steps

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.
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman