Questions from Business Statistics

Q: The poll described in Exercise 39 also investigated the respondents party affiliations

The poll described in Exercise 39 also investigated the respondents party affiliations based on what area of the state they lived in. Test an appropriate hypothesis about this table and state your con...

Q: In April 2009, Gallup published results from data collected from a

In April 2009, Gallup published results from data collected from a large sample of adults in the 27 European Union member states. One of the questions asked was, Which is the most practicable and real...

Q: Two different professors teach an introductory statistics course. The table shows

Two different professors teach an introductory statistics course. The table shows the distribution of final grades they reported. We wonder whether one of these professors is an easier grader. 1. Will...

Q: The following data show the percentage change in population for the 50

The following data show the percentage change in population for the 50 states and the District of Columbia from the 2000 census to the 2010 census. Using appropriate graphical displays and summary sta...

Q: Some people believe that a full moon elicits unusual behavior in people

Some people believe that a full moon elicits unusual behavior in people. The table shows the number of arrests made in a small town during weeks of six full moons and six other randomly selected weeks...

Q: In some situations where the expected cell counts are too small,

In some situations where the expected cell counts are too small, as in the case of the grades given by Professors Alpha and Beta in Exercise 43, we can complete an analysis anyway. We can often procee...

Q: In Exercise 44, you found that the expected cell counts failed

In Exercise 44, you found that the expected cell counts failed to satisfy the conditions for inference. 1. Find a sensible way to combine some cells that will make the expected counts acceptable. 2. T...

Q: A subtle form of racial discrimination in housing is racial steering.

A subtle form of racial discrimination in housing is racial steering. Racial steering occurs when real estate agents show prospective buyers only homes in neighborhoods already dominated by that famil...

Q: Titanic Newspaper headlines at the time, and traditional wisdom in the

Titanic Newspaper headlines at the time, and traditional wisdom in the succeeding decades, have held that women and children escaped the Titanic in greater proportions than men. Here a table with the...

Q: Most pregnancies are full term, but some are preterm (less

Most pregnancies are full term, but some are preterm (less than 37 weeks). Of those that are preterm, the Centers for Disease Control and Prevention classifies them as early (less than 34 weeks) and l...