Based on a simple random sample of 1300 college students, it is found that 299 students own a car. We wish to construct a 90% confidence interval to estimate the proportions ? of all college students who own a car. A) Read carefully the text and provide each of the following: The sample size ?= , from the sample, the number of college students who own a car is ?= , the confidence level is CL = %. B) Find the sample proportion ?ˆ= and ?ˆ=1−?ˆ=

A First Course in Probability (10th Edition)
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Based on a simple random sample of 1300 college students, it is found that 299 students own a car. We wish to construct a 90% confidence interval to estimate the proportions ? of all college students who own a car.

A) Read carefully the text and provide each of the following:

The sample size ?=
,
from the sample, the number of college students who own a car is ?=
,
the confidence level is CL =
%.

B) Find the sample proportion ?ˆ=
and ?ˆ=1−?ˆ=

Expert Solution
Step 1

(A)

The sample size is, n = 1300

The number of college students who own a car is,

x = 299

The confidence level is, CL = 90%

 

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