The lifetime of a certain type of battery is known to be normally distributed with standard deviation o=22 hours. A sample of 50 batteries had a mean lifetime of 120.1 hours. It is desired to construct a 95% confidence interval for the mean lifetime for this type of battery. Part 1 of 6 (a) What is the point estimate? The point estimate is 120.1 Part: 1 / 6 Part 2 of 6 (b) Find the critical value. The critical value is X
The lifetime of a certain type of battery is known to be normally distributed with standard deviation o=22 hours. A sample of 50 batteries had a mean lifetime of 120.1 hours. It is desired to construct a 95% confidence interval for the mean lifetime for this type of battery. Part 1 of 6 (a) What is the point estimate? The point estimate is 120.1 Part: 1 / 6 Part 2 of 6 (b) Find the critical value. The critical value is X
MATLAB: An Introduction with Applications
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ISBN:9781119256830
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Chapter1: Starting With Matlab
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 alt="The lifetime of a certain type of battery is known to be normally distributed with standard deviation o=22 hours. A sample of 50 batteries had a mean
lifetime of 120.1 hours. It is desired to construct a 95% confidence interval for the mean lifetime for this type of battery.
Part 1 of 6
(a) What is the point estimate?
The point estimate is 120.1
Part: 1/6 -
Part 2 of 6
(b) Find the critical value.
The critical value is
Skip Part
Check
Type here to search
X
S
B
16
no
17 C-
18
Save For Later
Submit
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A 01
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Transcribed Image Text:The lifetime of a certain type of battery is known to be normally distributed with standard deviation o=22 hours. A sample of 50 batteries had a mean
lifetime of 120.1 hours. It is desired to construct a 95% confidence interval for the mean lifetime for this type of battery.
Part 1 of 6
(a) What is the point estimate?
The point estimate is 120.1
Part: 1/6 -
Part 2 of 6
(b) Find the critical value.
The critical value is
Skip Part
Check
Type here to search
X
S
B
16
no
17 C-
18
Save For Later
Submit
© 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center
60°F
?
19
144
ho
A 01
ADI
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