Which one of the following is not an example of a continuous random variable?

Consider the following discrete probability distribution:                                                                x         -2         -1         0          1           2 P(x)   0.10     0.08     0.25     0.31     0.26 Calculate the mean (μ) of this discrete probability distribution.

Which one of the following is not an example of a discrete random variable?

In order to compare the means of two populations, independent random samples are selected from each population, with the results shown in the table below.  Use these data to construct a 98% confidence interval for the difference in the two population means.   Sample 1 Sample 2 Sample size 500 400 Sample mean 5,280 5,240 Sample standard dev. 150 200

A scientist wants to estimate the proportion of mares that conceive when bred by artificial insemination (AI).  She selects a random sample of 500 mares and finds that 300 of the 500 mares conceived when bred by AI.  What is the point estimate of the true population proportion of mares who become pregnant when bred by AI?

Independent random samples of litter sizes were selected from the Yorkshire and Landrace breeds of swine, with the following results: Yorkshire Landrace 8 7 9 8 10 9 8 8 9 7 10   We want to analyze these data using Analysis of Variance with a Completely Randomized Design. Which one of the following is not an assumption of this Analysis of Variance with a Completely Randomized Design?

If we roll a single die, the sample points are a 1, 2, 3, 4, 5, or 6.  Consider the following two events:        Event A:  toss an even number        Event B:  toss a number less than or equal to 2 List the sample points that would be included in the union of events A and B.

________________ can be applied to any data set, regardless of the shape of the distribution.

Consider the following probability distribution:                                                                                  x         -2       -1       0        1        2                                                                                  P(x)  .12     .09     .25     .30     .24                                                                                  Find the mean of this probability distribution.

A study of binge alcohol drinking by college students was published in the American Journal of Public Health.  Suppose an experiment consists of randomly selecting one of the undergraduate students who participated in the study.  Consider the following events: A: {The student is a binge drinker} B: {The student is a male} C: {The student lives in a coed dorm} Describe the following event in terms of unions, intersections, or complements:    The student is a male and is a binge drinker.