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543 people were selected at random from a large population. 505 of them said they had the Internet installed on their home computers.
Find the sample proportion of people who had the Internet on their home computers
Find the 99% confidence interval for the population proportion of people who had the Internet on their home computers.
probability based on a random experiment.your stock drawer has 18 folded pairs of stocks with 8 pairs of white 6 pairs
When 338 college students are randomly selected and surveyed, it is found that 109 own a car. Find a 99% confidence for the true proportion of all college students who own a car.
A statistics practitioner conducted a two-factor analysis of variance experiment with a =4, b = 3, and r = 8. The sum of squares are listed here:
A die is rolled 60 times. An "ace" is the side with one dot. Use the normal approximation to estiate the chance of getting exactly 12 aces.
A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%.
The random variable x is the number of houses sold by a realtor in a single month at the Sendsom's Real Estate office. Its probability distribution is as follows.
Construct a frequency distribution, percentage distribution, and cumulative percentage distribution for average airfares.
1. nbspif the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2
Determine what would happen to your critical value (Z) if you were to change the level of significance (a) from .05 to .1 in a two tailed hypothesis test.
A business man arrives on a randomly selected day in December. What is the probability that the temperature will be above?
The researcher found that Abraham Lincoln's educational score did not correlate highly with the expected variable. What is wrong?
Be sure to show whether you use the t- or z- value, and what value you use. Interpret the confidence interval in a single sentence. In another sentence, state why you used either the "t" or the "z".
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