Questions from Business Statistics

Q: In Exercises 24, 26, 28, and 30, we

In Exercises 24, 26, 28, and 30, we considered data on articles in the NEJM. The original study listed 23 different statistics methods. (The list read: t-tests, contingency tables, linear regression,...

Q: Here is a table we first saw in Chapter 2 showing who

Here is a table we first saw in Chapter 2 showing who survived the sinking of the Titanic based on whether they were crew members, or passengers booked in first-, second-, or third-class staterooms: 1...

Q: In 2015, the website NewGeography.com listed its ranking of

In 2015, the website NewGeography.com listed its ranking of the best cities for job growth in the United States. The magazine top 20 large cities, along with their weighted job rating indices, are giv...

Q: The table below shows the rank attained by male and female officers

The table below shows the rank attained by male and female officers in the New York City Police Department (NYPD). Do these data indicate that men and women are equitably represented at all levels of...

Q: Examine and comment on this table of the standardized residuals for the

Examine and comment on this table of the standardized residuals for the chi-square test you looked at in Exercise 33.

Q: Examine and comment on this table of the standardized residuals for the

Examine and comment on this table of the standardized residuals for the chi-square test you looked at in Exercise 34.

Q: It common folk wisdom that drinking cranberry juice can help prevent urinary

It common folk wisdom that drinking cranberry juice can help prevent urinary tract infections in women. In 2001, the British Medical Journal reported the results of a Finnish study in which three grou...

Q: A random survey of autos parked in the student lot and the

A random survey of autos parked in the student lot and the staff lot at a large university classified the brands by country of origin, as seen in the table. Are there differences in the national origi...

Q: A poll conducted by the University of Montana classified respondents by whether

A poll conducted by the University of Montana classified respondents by whether they were male or female and political party, as shown in the table. We wonder if there is evidence of an association be...

Q: Medical researchers followed 6272 Swedish men for 30 years to see if

Medical researchers followed 6272 Swedish men for 30 years to see if there was any association between the amount of fish in their diet and prostate cancer. (Fatty Fish Consumption and Risk of Prostat...