**Question: **The students of Hugh Logan’s math class took the Scholastic Aptitude Test. Their math scores are shown below. Find the mean score.

552 593 358 352 537

349 357 596 470 482

**Question: **A medical student surveys adults to determine if gender and seat belt use are independent. Use the 5 steps of hypothesis testing to determine whether gender and seat belt use are independent.

Seat belt use | Gender M | F |

Belt | 70 | 60 |

No belt | 30 | 40 |

**Question: **A researcher collected daily sodium intake and systolic blood pressure readings on 12 patients. Obtain the regression equation from SPSS and include the table you used for the data. Use the 5 step hypothesis testing approach to determine if the regression equation is significant at alpha = 0.05. What would be a likely blood pressure for a person with a sodium intake of 6.3: 7.6?

Sodium | SBP |

6.8 | 154 |

7 | 167 |

6.9 | 162 |

7.2 | 175 |

7.3 | 190 |

7 | 158 |

7 | 166 |

7.5 | 195 |

7.3 | 189 |

7.1 | 186 |

6.5 | 148 |

6.4 | 140 |

**Question: **Two health inspectors rate 11 hospitals on cleanliness. Determine whether their rankings are comparable, using the appropriate nonparametric test and the 5 steps of hypothesis testing.

Inspector 1 | Inspector 2 |

2 3 2 3 1 4 5 3 1 3 4 | 1 3 3 2 2 5 4 2 1 4 3 |

**Question: **A medical informatics manager reviews sick day use in her department. She identifies that employees in her small department used the following amount of sick time in the past year:

Men: 5,10,2,0,6,4,5,15

Women: 8,9,3,5,0,4,15

The statistician indicated she should use a nonparametric test to determine if there is a difference in sick time use between the men and women in her department. Use the 5-step approach to hypothesis testing and alpha=0.05 to determine if there is a difference.

**Question: **Refer to the baseball dataset provided on the author's website.

Over the last 10 years, the mean attendance per team followed a normal distribution with a mean of 2.25 million per team and a standard deviation of .70 million.

o Use a statistical software to compute the mean attendance per team for the 2009 season.

o Determine the likelihood of a sample mean this large or larger from the population.

**Question: ** A recent study indicated that women took an average of 8.6 weeks of unpaid leave from their jobs after the birth of a child. Assume that this distribution follows the normal probability distribution with a standard deviation of 2.0 weeks. We select a sample of 35 women who recently returned to work after the birth of a child. What is the likelihood that the mean of this sample is at least 8.8 weeks?

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