Mathematics, 24.05.2021 21:00 mallyosburn
Students at Elon University were surveyed and the average commute distance to campus is 0.5 mile. Assume the population standard deviation is 0.1 mile. Please construct a 90% confidence interval for the population mean.
a. [0.472, 0.528]
b. [0.479, 0.521)
c. [0.463, 0.534]
d. [0.476, 0.524]
Answers: 1
![[0.5 - \frac{0.1645}{\sqrt{n}}, 0.5 + \frac{0.1645}{\sqrt{n}}]](/tpl/images/1344/6256/eb498.png)
, in which n is the number of students surveyed.
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
.
, so Z = 1.645.
is the standard deviation of the population and n is the size of the sample.
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Students at Elon University were surveyed and the average commute distance to campus is 0.5 mile. As...
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