**Question: ** 12 cars were rated for style, performance, drivability, etc., by independent automotive engineers and by potential customers. The scale ran from 1 to 100 points, with 1 being the lowest, 100 the highest. The data are show here is there a relationship between the two ratings?

## Statistics: Z-test – #29535

**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 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 |