Author: Anonymous

When does a linear programming problem become ‘unbounded’?

What does the ‘range of optimality’ indicate in sensitivity analysis?

Data on the change in the cost of tuition, a shared dormitory room, and the most popular meal plan from one academic year to the next academic year for a sample of 100 public universities are collected. Below is the boxplot for the change in cost in dollars. The distribution of the change in cost is

In right-skewed distributions, which of the following is the correct statement?

Consider the following data set:Variable 1:      6        7        2         1Variable 2:    -12     -14    -4    -2The sample correlation for this data set is __________.

At the U.S. Open Tennis Championship a statistician keeps track of every serve that a player hits during the tournament. The lower quartile of a particular player’s serve speeds was reported to be 88 mph. Which of the following interpretations of this information is correct?

SCENARIO 3-1Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over 60 years of age whose net worth is too high to qualify for Medicaid. The ages of 25 senior citizens were as follows: 60 61 62 63 64 65 66 68 68 69 70 73 73 74 75 76 76 81 81 82 86 87 89 90 92 Referring to Scenario 3-1, calculate the standard deviation of the ages of the senior citizens correct to the nearest hundredth of a year (two decimal places).

Consider the following chart. Which of the following statements is most correct?

SCENARIO 2-5The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier.RelativeTime (in Minutes)Frequency0 but less than 50.375 but less than 100.2210 but less than 150.1515 but less than 200.1020 but less than 250.0725 but less than 300.0730 or more0.02Referring to Scenario 2-5, what is the cumulative relative frequency for the percentage of calls that lasted under 20 minutes?

Suppose you have data on hourly wages for a sample of 1000 individuals. You construct the histogram below What is the shape of the wage distribution ?