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Construct a probability distribution for a family of three children. Let X represent the number of boys. Assume there is an equal chance of having a boy or a girl for each child. Include your probability distribution table in your Word document. Create a probability histogram in Excel.
(a) What is the sample proportion of Americans who believe there is intelligent life on other planets? (b) What is the standard error of the sample proportion? (c) Calculate a 90% CI for the population proportion of Americans who believe there is ..
See if there is a difference in their means and variances.
Comparing the results from (a) and (e), what happens to the required sample size when we increase the confidence level?
the expected values for each cell in a chi-square test are the values to be expected in each cell ifanswerthe sample is
Truck tire life is normally distributed with a mean of 60,000 miles and a standard deviation of 4,000 miles. You bought four tires. What is the probability that the average mileage of the four tires exceeds 66,000 miles?
The R.R. Bowker Company of New York collects information on the retail prices of collectible children's books and publishes its findings in Publisher's Weekly.
Calculate and interpret standard error of estimate se and coefficient of determination R2 for these data.
Make a conclusion about the hypotheses bases on your result( not why, should be it means) Required minimum-1 page
Why do you use the chi-square statistic? Explain. What type of data is used with chi square analysis? Explain. What are the hypotheses in a chi-square test for independence? Explain.
rolling a pair of fair die 10 times and recording the number of times we get a 7. what is the probability of rolling
the snappy service gas station manager is thinking about a promotion that she hopes will bring in more business to the
Correlation and Regression
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