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Assume that the population of heights of male college students is approximately normally distributed with mean m of 68 inches and standard deviation s of 3.75 inches. Show all work.
(A) Find the proportion of male college students whose height is greater than 70 inches.
Determine which variable is the dependent variable.
an airline company sells 160 tickets for a plane with 150 seats knowing that the probability that a passenger will not
Suppose you were a consultant who has been engaged by an airline company to estimate the 'fudge' factor for passenger's weights. Describe an experiment you would consider to estimate this 'fudge' factor. Discuss the statistical test you would cons..
Discussion should include a critical reflection on the way in which you completed the market challenge element of the module.
A particular candidate claims she has the support of at least 60% of the voters in her district. A random sample of 150 voters yields 87 who support her. The candidate wishes to test her claim at the 0.05 level of significance.
Describe the five steps of hypothesis testing. Compare Type I and Type II errors and give specific examples for each. Which error should be minimized the most and first?
Random samples of five were selected from each of three populations. The sum of squares total was 100. The sum of squares due to the treatments was 40.
Constructing a scatter plot and determining correlation. a. display the data in a scatter plot, b. calculate the correlation coefficient f, and c. make a conclusion about the type of correlation.
Testing for equality of variances - Independent random samples were taken from normal distributions of the yearly production of ships built by the International Ship Building Company under
the following data represent the costs in dollars of a sample of 30 postal mailings by a
a) Compute a 95% Confidence Interval for the true population proportion of successes. b) Based on this analysis can you conclude that the new system meets the requirement? Explain your conclusion.
What was the explanatory variable? The explanatory variable is the number of students taking a first year seminar course for pre-health professional majors.
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