THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The data shown below specify how much a sample of 20 executives paid in federal income taxes,as a percentage of gross income,are reproduced below.
Assume that the standard deviation for the underlying population is equal to 4.0.
-Closed caption movies allow the hearing impaired to enjoy the dialogue as well as the acting.A local organization for the hearing impaired people of the community takes a random sample of 100 movie listings offered by the cable television company in order to estimate the proportion of closed caption movies offered.They observed that 14 movies were closed caption.The cable television company says at least 5% of the movies shown are closed captioned.Prepare a 90% confidence interval for the true proportion P and comment on the cable television company's claim.
Definitions:
Q2: Assume that we have independent random samples
Q31: What are the appropriate null and alternative
Q32: Calculate the margin of error for a
Q78: Find a 99% confidence interval for the
Q83: For confidence intervals of two means that
Q84: The residual is defined as the difference
Q96: Why does the sample size play such
Q110: Find the value k such that P(0
Q119: Let the random variable Z follow a
Q153: What is the most accurate statement that