7.2.40-TA light bulb manufacturer quarantees that the mean life of a certain type of light bulb is at least 770 hours. A random sample of 27 light bulbs has a mean life of 743 hours. Assume the population is normally distributed and thepopulation standard deviation is 59 hours. At a= 0.02, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e).Question Help ▼(a) Identify the null hypothesis and alternative hypothesis.O A. Ho: p>770H3 µ5770 (claim)B. Ho: 2770 (daim)H, u<770O E. Ho: us743OC. Ho: u=743O D. Ho u#770(claim)H u= 770H, u#743 (dlaim)OF. H u<743 (claim)Ha p>743 (claim)H, u2743(b) Identify the critical value(s). Use technology.Zo = D(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 Answer3 partsremainingClear AllCheck Answerles7e ppt_08_03.pptxOpen file1:53 PMO Type here to search2/21/2021breakendinsertfohome1sダesc*#33$4&7.@6.8.UW

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A light bulb manufacturer quarantees that the mean life of a certain type of light bulb is at least 770 hours. A random sample of 27 light bulbs has a mean life of 743 hours. Assume the population is nomally distributed and the population standard deviation is 59 hours. At a= 0.02, do you have enough evidence to reject the manufacturer's daim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. O A. Ho: p> 770 H us770 (claim) B. Hg 2770 (daim) OC. H u=743 H, u#743 (daim) OF. H u<743 (daim) H, u<770 O D. Ho: u+770(claim) H u= 770 OE. Ho: us743 H p> 743 (claim) H p2743 (b) Identify the critical value(s). Use technology. (Use a comma to separate answers as needed. Round to two decimal places as needed.)

A light bulb manufacturer quarantees that the mean life of a certain type of light bulb is at least 770 hours. A random sample of 27 light bulbs has a mean life of 743 hours. Assume the population is nomally distributed and the population standard deviation is 59 hours. At a= 0.02, do you have enough evidence to reject the manufacturer's daim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. O A. Ho: p> 770 H us770 (claim) B. Hg 2770 (daim) OC. H u=743 H, u#743 (daim) OF. H u<743 (daim) H, u<770 O D. Ho: u+770(claim) H u= 770 OE. Ho: us743 H p> 743 (claim) H p2743 (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

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Topic Video

Question

7.2.40-T
A light bulb manufacturer quarantees that the mean life of a certain type of light bulb is at least 770 hours. A random sample of 27 light bulbs has a mean life of 743 hours. Assume the population is normally distributed and the
population standard deviation is 59 hours. At a= 0.02, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e).
Question Help ▼
(a) Identify the null hypothesis and alternative hypothesis.
O A. Ho: p>770
H3 µ5770 (claim)
B. Ho: 2770 (daim)
H, u<770
O E. Ho: us743
OC. Ho: u=743
O D. Ho u#770(claim)
H u= 770
H, u#743 (dlaim)
OF. H u<743 (claim)
Ha p>743 (claim)
H, u2743
(b) Identify the critical value(s). Use technology.
Zo = D
(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
3 parts
remaining
Clear All
Check Answer
les7e ppt_08_03.pptx
Open file
1:53 PM
O Type here to search
2/21/2021
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$
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Expert Solution

Step 1

It is given that,

$α = 0.02$

and test is left-tailed.

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Solved in 2 steps with 2 images

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