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To determine whether there is a difference in the proportion of viewers watching the three channels.
In a particular market there are three commercial television stations, each with its own evening news program from 6:00 to 6:30 P.M. According to a report in this morning\'s local newspaper, a random sample of 150 viewers last night revealed 53 watched the news on WNAE (channel 5), 64 watched on WRRN (channel 11), and 33 on WSPD (channel 13). At the .05 significance level, is there a difference in the proportion of viewers watching the three channels?
Sampling variability refers to the idea that different samples will include different individuals
P-value to test hypotheses,
Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?
Determine the mean and standard deviation of this distribution?
A company tracked the number of complaints it received during the first 6 months of last year, as shown in the following table:
What is the probability that there will be more than three trucks either being loaded or waiting?
Test the claim that the actual percentage is 53%. Use a 0.10 significance level.
The weight of a product is normally distributed with a mean of four ounces and a variance of .25 "squared ounces." What is the probability that the randomly selected unit from a recently manufactured batch weighs no more than 3.50 ounces.
Binomial distribution to find out the mean also standard deviation. Variance and standard deviation of a lot of 300 calculators.
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? What is the p-value?
Ace Jack had no idea whether the $100,000 he pays for training for his used car salespeople works.
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
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