Questions from Applied Statistics

Q: A student rolled a supposedly fair die 60 times, resulting in

A student rolled a supposedly fair die 60 times, resulting in the distribution of dots shown. Research question: At α = .10, can you reject the hypothesis that the die is fair?

Q: In the World Cup tournaments between 1990 and 2002, there were

In the World Cup tournaments between 1990 and 2002, there were 232 games with the distribution of goals shown in this worksheet. Research question: At α = .025, can you reject the hypoth...

Q: The table below shows the number of ATM customer arrivals per minute

The table below shows the number of ATM customer arrivals per minute in 60 randomly chosen minutes. Research question: At α = .025, can you reject the hypothesis that the number of arriv...

Q: (a) Make a scatter plot of the data. What

(a) Make a scatter plot of the data. What does it suggest about the correlation between X and Y? (b) Use Excel, MegaStat, or MINITAB to calculate the correlation coefficient. (c) Use Excel or Appendi...

Q: Pick one Excel data set (A through F) and investigate

Pick one Excel data set (A through F) and investigate whether the data could have come from a normal population using α = .01. Use any test you wish, including a histogram, or MegaStat&a...

Q: Explain each chart’s purpose and the parameters that must be known or

Explain each chart’s purpose and the parameters that must be known or estimated to establish its control limits. a.
chart b. R chart c. p chart d. I chart

Q: Define three possible quality metrics (not necessarily the ones actually used

Define three possible quality metrics (not necessarily the ones actually used) to describe and monitor: (a) your performance in your college classes; (b) effectiveness of the professors in your colleg...

Q: Are the X and Y data well-conditioned? If not

Are the X and Y data well-conditioned? If not, make any transformations that may be necessary and explain.

Q: Define three quality metrics that might be used to describe quality and

Define three quality metrics that might be used to describe quality and performance for the following services: (a) your cellular phone service (e.g., Verizon); (b) your Internet service provider (e.g...

Q: A process has specification limits of LSL = 540 and USL =

A process has specification limits of LSL = 540 and USL = 550. The process standard deviaton is σ = 1.25. Find the Cp and Cpk capability indexes if (a) the process mean is 545; (b) the process mean is...