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A random sample of 1000 satellite radio subscribers was asked, "Do you have a satellite radio receiver in your car?
A random sample of 1000 satellite radio subscribers was asked, “Do you have a satellite radio receiver in your car?” The survey found that 250 subscribes did, in fact, have a satellite receiver in their car.
a) From the sample, calculate an estimate of the true proportion of satellite radio subscribers who have a satellite radio receiver in their car.
Answer: ** Type an integer or the decimal for the answer.
^p =
b) Form a 90% confidence interval for the estimate, part (a)
Answer:
90% confidence interval is: ( ), ( )
c) Give an interpretation of interval, part (b)
Answer:
What is the confidence Interval??
( ), ( )
Remember: A confidence interval is an interval of values used to estimate the true value of a population parameter. In general, the confidence level for an interval refers to the confidence that the interval contains the true value of the parameter. Use this information to interpret the confidence interval.
