13) The number of daily passengers riding in a local Sunshine Cab is assumed to be normally distributed with a standard deviation o = 4.6 passengers. If a sample of n= 50 cabs yielded a sample mean of 36.5 passengers, find each of the following confidence intervals for µ, the mean number of daily passengers riding in a Sunshine Cab Company taxi. (a) 99% confidence interval

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13) The number of daily passengers riding in a local Sunshine Cab is assumed to be normally
distributed with a standard deviation o = 4.6 passengers. If a sample of n = 50 cabs yielded
a sample mean of 36.5 passengers, find each of the following confidence intervals for
mean number of daily passengers riding in a Sunshine Cab Company taxi.
the
(a) 99% confidence interval
(b) 95% confidence interval
(c) 80% confidence interval (you will need to look up 0.8 in the z-table and find the
corresponding z-score in order to do this.
8
19
T
Transcribed Image Text:10:06 AM Sat Dec 19 * 64% 13) The number of daily passengers riding in a local Sunshine Cab is assumed to be normally distributed with a standard deviation o = 4.6 passengers. If a sample of n = 50 cabs yielded a sample mean of 36.5 passengers, find each of the following confidence intervals for mean number of daily passengers riding in a Sunshine Cab Company taxi. the (a) 99% confidence interval (b) 95% confidence interval (c) 80% confidence interval (you will need to look up 0.8 in the z-table and find the corresponding z-score in order to do this. 8 19 T
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