These are the seven Hypothesis Testing Steps for a hypothesis test:

1. State the claim H0 and the alternative, Ha

2. Choose a significance level or use the given one.

3. Draw the sampling distribution based on the assumption that H0 is true, and shade the area of interest.

4. Check conditions. Calculate the test statistic.

5. Find the p-value.

6. If the p-value is less than the significance level, ?, reject the null hypothesis. (There is enough evidence to reject the claim.) If the p-value is greater than the significance level, ?, do not reject the null hypothesis. (There is not enough evidence to reject the claim.) (You can use the p-value to make a statement about the strength of the evidence against H0 without using ?, e.g., p>.10 implies "little or no evidence against H0", .05

7. a statement to interpret the decision in the context of the original claim.

For the first 3 problems complete a 7 step hypothesis test including checking (explaining why) the assumptions are met. 1) The Department of Transportation wants to determine whether the occurrence of fatal accidents is related to the weight of a car. The following data show the outcome of 300 randomly selected accidents. Weight of Car (in pounds) -------------------------a--------------------------- Type of Accident 1-1599 1600-2299 2300 or more Fatal 72 20 18 Nonfatal 130 38 22