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Assume that we have a herd of 50 horses and that we want to select a random sample of 5 of the horses for an experiment.  We begin at row 5 column 1 of a random number table and observe the random numbers shown in the table below.         Col.           1 2 3 4 5 6 Row 5: 37570 39975 81837 16656 06121 91782   6: 77921 06907 11008 42751 27756 53498 Which one of the following is the correct set of 5 randomly selected horses to include in our experiment, assuming that we go from left to right across the rows of random numbers?

A bottling company needs to produce bottles that will hold 12 ounces of liquid for a local beer maker.  Periodically, the company receives complaints that their bottles are not holding enough liquid.  To test this claim, the bottling company randomly samples 15 bottles and finds the average amount of liquid held by the 15 bottles is 11.90 ounces and the standard deviation is 0.20 ounces. Which one of the following is the set of hypotheses the company wishes to test?

The Australian Journal of Zoology reported on a study of the diets and water requirements of spinifex pigeons.  Sixteen pigeons were captured in the desert and the crop (i.e., stomach) contents of each were examined.  The weight of dry seeds in the crop of each pigeon was measured and recorded.  The mean was 1.4 grams and the standard deviation was 0.20 grams. Find a 99% confidence interval for the average weight of dry seeds in the crops of spinifex pigeons inhabiting the Western Australian desert.

An industrial psychologist is investigating the effects of work environment on employee attitudes.  A group of 20 recently hired sales trainees were randomly assigned to one of 4 different “home rooms” with 5 trainees per room.  Each room was identical except for the color of the walls.  The 4 colors used were light green, light blue, gray, and red.  Therefore, in this experiment the 4 treatments were the 4 room colors.  The psychologist wants to compare the mean attitudes of the trainees assigned to the 4 rooms with different colors.  At the end of the training program, the attitude of each trainee was measured on a 60 point scale (the lower the score, the poorer the attitude).  The data were subjected to an analysis of variance.  The partially completed Analysis of Variance (ANOVA) table was as follows: Source           df       SS              MS              F     Total                       1,829.75 Treatments             1,678.15 Error                          151.60                                      Find the Mean Squares for treatments.

The following is a valid probability distribution for a discrete random variable, X: X             4           9            20          P (X)     -0.30      1.0         0.30       

Which one of the following is not an element of descriptive statistical problems?

A university dean is interested in determining the proportion of students who receive some sort of financial aid.  Rather than examine the records for all students, the dean randomly selects 200 students and finds that 118 of them are receiving financial aid.  The dean performs the calculations needed to find a 90% large-sample confidence interval for the true population proportion.  Which one of the following confidence intervals is correct?

An animal scientist is interested in determining the proportion of ewes (i.e., female sheep) that give birth to twins.  Rather than examine the records for all ewes in the United States, the animal scientist randomly selects 500 ewes and finds that 220 of them gave birth to twins. Construct a 99% confidence interval to estimate the true population proportion of ewes, p, who give birth to twins.

The ages (in years) of a sample of 6 students are as follows: Student Age 1 19 2 23 3 20 4 20 5 19 6 19                 Calculate the median age of this sample of 6 students.

The ________ ________ is the set of possible computed values of the test statistic for which the null hypothesis will be rejected.