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For many years TV executives used the guideline that 30 percent of the audience was watching each of the prime-time networks and 10 percent were watching cable stations on a weekday night. A random sample of 500 viewers in the Tampa-St. Petersburg, Florida, and area last Monday night showed that 165 homes were tuned in to the ABC affiliate, 140 to the CBS affiliate, 125 to the NBC affiliate, and the remainder was viewing a cable station. At the .05 significance level, can we conclude that the guideline is still reasonable?
A check of dorm rooms on a large college campuses revealed that 38% had refrigerators, 52 percent had TVs and 21 percent had both a TV and a refrigerator. What's the probability that a randomly selected dorm room has.
Establish an approximate design to MTBF required for a system that will result in an approximate minimum total cost over a five year period if the system is to be operated 7500 hours per year
A simple random sample of 1000 Americans found that 61% were satisfied with the service provided by the dealer from which they bought their car.
Create a set of n observations from the binomial distribution with 1 trial and the event probability of 0.007, where n is your answer.
Let be the average of the pay you receive for the first and second week. Find the sampling distribution
What is the probability that two of absent students were girls.What is the probability that two of absent students were boys.
One state lottery has 1000 prizes of $1, 200 prizes of $5, 50 prizes of $25, 15 prizes of $150, 4 prizes of $500, and 1 prize of $2500. What is the lottery expected profit per ticket?
Salary information for a random sample of male and female employees of a large company is shown below.
If all samples of size 64 are drawn, mean of sample according to Central Limit Theorem is 100.
A normal distribution with a mean of 55 and a standard deviation of 6 is evaluated to solve a business problem.
For this same sample of n = 45, find out the width of confidence interval around population mean? Illustrate all work.
What is the level of measurement for the variable, "political ideology" measured as "Very Conservative", "Conservative","Moderate", "Liberal" and "Very Liberal".
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