Questions from Applied Statistics

Q: Is there a difference between the variance in ages for full-

Is there a difference between the variance in ages for full-time seasonal employees and part-time seasonal employees at Vail Resorts? A sample of 62 full-time employees had an s12 = 265.69. A sample o...

Q: As a volunteer for a consumer research group, LaShonda was assigned

As a volunteer for a consumer research group, LaShonda was assigned to analyze the freshness of three brands of tortilla chips. She examined four randomly chosen bags of chips for four brands of chips...

Q: On a random basis, Bob buys a small take-out

On a random basis, Bob buys a small take-out coffee from one of two restaurants. As a statistics project in the month of May, he measured the temperature of each cup immediately after purchase, using...

Q: Three samples of each of three types of PVC pipe of equal

Three samples of each of three types of PVC pipe of equal wall thickness are tested to failure under three temperature conditions, yielding the results shown below. Research questions: Is mean burst s...

Q: One group of accounting students used simulation programs, while another group

One group of accounting students used simulation programs, while another group received a tutorial. Scores on an exam were compared. (a). Construct a 90 percent confidence interval for the true dif...

Q: Advertisers fear that users of DVD recorders will “fast forward”

Advertisers fear that users of DVD recorders will “fast forward” past commercials when they watch a recorded program. A leading British pay television company told their advertisers that this effect m...

Q: Below are data on truck production (number of vehicles completed)

Below are data on truck production (number of vehicles completed) during the second shift at five truck plants for each day in a randomly chosen week. Research question: Are the mean production rates...

Q: Do positive emotions reduce susceptibility to colds? Healthy volunteers were divided

Do positive emotions reduce susceptibility to colds? Healthy volunteers were divided into two groups based on their emotional profiles and each group was exposed to rhinovirus (the common cold). Of th...

Q: Male and female students in a finance class were asked how much

Male and female students in a finance class were asked how much their last tank of gas cost. Can you conclude that on average males spent more on gas than females? Males ………………………………………………………… Femal...

Q: Students in nutrition classes at two high schools were asked to keep

Students in nutrition classes at two high schools were asked to keep track of the number of times during the past month that they ordered from a fast-food chain restaurant. Sonando High School ……………...