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A survey of subscribers to Forbes showed that 45.8% rented a car during the past 12 months for business reasons, 54% rented a car during the past 12 months for personal reasons, and 30% rented a car during the past 12 months for both business and personal reasons (Forbes 1993 subscriber study).
a) What is the probability that a subscriber rented a car during the past 12 month for business or personal reasons?
b) What is the probability that a subscriber did not rent a car during the past 12 months for either business or personal reasons?
Find a 95% confidence interval for the population mean selling price of all homes in this neighborhood.
Perform Repeated Measures ANOVA also calculate PRE. An educational study uses a simple pre-post design to assess the value of a computer tutor for solving inequalities.
Conduct the hypothesis test and compute the p-value. At a 0.05 level of significance, what is your conclusion?
Utilizing the .05 level, do the results support the psychologists' theory. Elucidate your answer to somebody whom has never had a course in statistics.
Use this information to construct a probability table, and then calculate each of the following probabilities:
Is there a method which is accepted across industries for determining the minimum size of valid sample? N>50 +(8m aka 8 times the number of independent variables)
Find or create a data set that would allow you to explain what is meant by mean, median and mode. Make sure to also show any calculations or formula necessary. Describe or provide as much information on the data set as possible.
Suppose the least squares regression equation is Y' = 1,202 + 1,133X. When X = 3, what does Y' equal?
Compute a 95% confidence interval for the mean difference in the percentage of bone loss between two groups.
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
The dean of a nursing school claims that the average starting salary of its graduates is more than 60 (in $000's). It is known that the population standard deviation is 10 (in $000's).
Workers at a large toxic clean up project are concerned that their white blood cell counts may have been reduced. Let x be a random variable that represents white blood cell count per cubic millimeter of whole blood in a healthy adult.
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