Questions from Statistics Principles

Q: Refer to the physical conditioning data given in Data Bank. Use

Refer to the physical conditioning data given in Data Bank. Use MINITAB or some other package to fit a regression of the final number of sit-ups on the initial number of sit-ups and the gender of the...

Q: To examine the quality of a random number generator, frequency counts

To examine the quality of a random number generator, frequency counts of the individual integers are recorded from an output of 500 integers. The concept of randomness implies that the integers 0, 1,...

Q: The following table records the observed number of births at a hospital

The following table records the observed number of births at a hospital in four consecutive quarterly periods. It is conjectured that twice as many babies are born during the Jan.-March quarter than...

Q: A community paper in the Spanish language was delivered to many sites

A community paper in the Spanish language was delivered to many sites in the San Francisco Bay area. As a check on the circulation numbers that are important to advertisers, a survey was conducted at...

Q: Referring to the data for site 3 and site 4 in Exercise

Referring to the data for site 3 and site 4 in Exercise 13.29, make a 2 * 2 table and test H0 : p3 = p4 versus H1 : p3 > p4 at a = .05. (a) Is there strong evidence that the probability a paper wi...

Q: Refer to Exercise 3.48 and the data concerning a vaccine

Refer to Exercise 3.48 and the data concerning a vaccine for type B hepatitis. Do these data indicate that there is a different rate of incidence of hepatitis between the vaccinated and nonvaccinated...

Q: Refer to the data in Exercise 13.31. (

Refer to the data in Exercise 13.31. (a) Use the Z test for testing the equality of two population proportions with a two-sided alternative. Verify the relation x2 = Z2 by comparing their numerical v...

Q: Find the standard deviation of the measurements of diameters given in Exercise

Find the standard deviation of the measurements of diameters given in Exercise 2.45. Data from Exercise 2.45: The following measurements of the diameters (in feet) of Indian mounds in southern Wiscon...

Q: To compare the effectiveness of four drugs in relieving postoperative pain,

To compare the effectiveness of four drugs in relieving postoperative pain, an experiment was done by randomly assigning 195 surgical patients to the drugs under study. Recorded here are the number of...

Q: Using the data for drugs l and 3 in Exercise 13.

Using the data for drugs l and 3 in Exercise 13.33, make a 2 * 2 contingency table and test H0 : p1 = p3 versus H 1 : p1 ≠ p3 at a = .05 employing: (a) The x2 test. (b) The Z test....