1) The following data shows number of COVID-19 fatalities in Sacramento County during first 15 days of February 2021 (2/1/21 to 2/15/21): 9, 8, 6, 8, 8, 8, 7, 8, 9, 4, 6, 2, 5, 6, 4 [Sample Mean: X = 6.53] [Sample Standard Deviation: S = 2.07; Sample Variance: S² = 4.27] a) Find 90% confidence interval for mean. b) Find 99% prediction interval for mean. c) Find 95% confidence interval for variance.

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1) The following data shows number of COVID-19 fatalities in Sacramento County during first
15 days of February 2021 (2/1/21 to 2/15/21):
9, 8, 6, 8, 8, 8, 7, 8, 9, 4, 6, 2, 5, 6, 4
[Sample Mean: X= 6.53]
[Sample Standard Deviation: S = 2.07; Sample Variance: S²= 4.27]
a) Find 90% confidence interval for mean.
b) Find 99% prediction interval for mean.
c) Find 95% confidence interval for variance.
Transcribed Image Text:1) The following data shows number of COVID-19 fatalities in Sacramento County during first 15 days of February 2021 (2/1/21 to 2/15/21): 9, 8, 6, 8, 8, 8, 7, 8, 9, 4, 6, 2, 5, 6, 4 [Sample Mean: X= 6.53] [Sample Standard Deviation: S = 2.07; Sample Variance: S²= 4.27] a) Find 90% confidence interval for mean. b) Find 99% prediction interval for mean. c) Find 95% confidence interval for variance.
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