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57% of families say that their children have an influence on their vacation destinations. Consider a random sample of six families who are asked if their children have an influence on their vacation destination.
a) Construct a binomial distribution
b) Find the mean, variance and standard deviation of the distribution
Consumer Reports published an article on some sport-utility vehicles they had tested recently. They reported some basic information about each of the vehicles and the results of some tests conducted by their staff.
Find out the probability distribution of your net winnings if you play one time. Calculate the mean and the standard deviation.
The probability that a patient recovers from a disease is 63%. What is the probability that:
Several questions will be asked but the main outcome measure of interest will be the percentage of customers who were completely satisfied and plan to return and the average amount spent.
Calculate the mean, median, range, and standard deviation for the Body Fat Versus Weight data set. Report your findings, and interpret the meanings of each measurement.
This assignment involves displaying an understanding of an independent t-test. Based on my hypothetical research question: What do early childhood educators report about their experiences with fathers' involvement in their programs?
According to the Internal Revenue Service, the mean tax refund for the year 2007 was $ 2,708. Assume the standard deviation is $ 650 and tha the amounts refunded follow a normal probability distribution.
A human society claims that less than 31% of U.S. households own a dog. In a random sample of 392 U.S. households, 155 say they own a dog. At a=0.03, is there enough evidence to support the society's claim?
Suppose we want to conduct a poll to estimate the proportion of voters who approve of the current mayor, and we plan to use a 95% confidence interval for our estimate.
What is approximately the largest sample mean of another sample of n= 16 participants you would expect to obtain from this finite population?
Draw a column chart from grade book. Use column illustrating students' names; select one of the tests to plot.
Die with 4 sides {1, 2, 3, 4} is tossed 2 times. Let X equal maximum of two observations and let Y equal minimum. Determine joint pmf of X and Y, and correlation coefficient. Are X and Y independent?
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