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47% of students have children under 17 living at home with them. Find the probability that a random sample of 800 students will return more than 50% students with children under 17 living at home with them.
Conduct an analysis of variance
Give a brief definition and an example of the following: a. Descriptive Statistics b. Inferential Statistics
At a board meeting of 20 businessmen, all of whom wear ties, what is the probability that:
Calculate separately for 1983 and 1987, the 95% confidence interval for the proportion of students who had driven an automobile while drinking.
The random variable X, representing the number of accidents in a certain intersection in a week, has the following probability distribution
Find a 99% confidence interval estimate of the proportion of people who say that they voted.
A manufacturing process makes items whose weights are normally distributed. It is known that 22.57% of all the items made weigh between 100 grams up to mean and 49.18% weigh from the mean up to 190 grams. Find out the standard deviation.
Test hypothesis that people in State A are more depressed than U.S. population. Illustrate all of your hypothesis steps. (Use alpha = .01.)
Mattel Corporation produces a remote-controlled car that requires three AA batteries. The mean life of these batteries in this product is 35 hours with a standard deviation of 5.5 hours. As part of its testing program Sony tests samples of 16 batt..
Test hypothesis that Site B is more successful in initiating acquaintances than Site A. Use alpha = .05.
If we know that 20 people will attend, what price should be charged per person to break even?
Process data by Excel using its two-way ANOVA without replication program.
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