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A coach in a large high school thinks that ballet training will improve the batting performance of his baseball team. He decides to have a randomly selected half of the team take six weeks of ballet training before the baseball season begins, while the other half does not take such training. He will then compare the season batting averages of group A (those with ballet training) and group B (those without ballet training) by comparing the mean of group A with the mean of group B.
An independent variable is:
The casino game craps is based on rolling two dice. Here is the assignment of probabilities to the sum of numbers on the up face when two dice are rolled:
would this prove that they are exceeding their goal, using α = 0.025?
The means appear to be very close, but not the variances. At α = .05, is there a difference in variances? Show all steps clearly, including an illustration of the decision rule.
Determine SSE, SS (Total) and the explained sum of squared variation SSR and find the estimated y intercept slope and write the regression equation.
What is the probability that the first two cards dealt yields "Black Jack"?
Find out the conditional probability for the given data. Illustrate what is the conditional chance that the selected person is male?
A bookcase contains 3 statistics books and 4 biology books. If 2 books are chosen at random, find the chance that both are statistics books.
Convert each of the following z intervals to raw score x intervals:
For the following scores, find the (A) mean, (B) median, (C) sum of squared deviation (d) variance, and (e) standard deviation:
Use the binomial distribution formula to calculate the probability that:
Describe the sampling distribution model of this mean.
Plot the control limits for the mean outside diameter and the range.
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