Earl is putting new gutters around his garage. The garage is rectangular in shape and it is 25 feet long and 18 feet 6 inches wi
1 answer:
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Look at the pictures.
1. D (y=3)
2. y=3
3. y=-2
4. y=4
5. B (52 lb)
1. D (y=3)
2. y=3
3. y=-2
4. y=4
5. B (52 lb)
Answer:
Step-by-step explanation:
As per given , we have
n = 11
Since population standard deviation is missing, so we use t-test.
Critical t-value for 99% confidence :
[using two-tailed t-value table]
Confidence interval :
Hence, 99% confidence interval for the mean amount of time that students spend in the shower each day.=