1. State the null hypothesis

2. Select an appropriate alternative hypothesis

3. Choose the appropriate statistical test

4. Select the desired level of significance to be used

5. Compute the calculated value and determine the critical test value

6. Make the decision. Reject the null hypothesis if the calculated value is larger than the critical value, otherwise, do not reject the null.

2. A group of 266 healthy men and women were grouped according to their number of relationships. They were then exposed to a virus that caused colds. The data is summarized in the table below. Does the data provide sufficient evidence to indicate that susceptibility to colds is affected by the number of relationships you have? Contacted cold? Number of Relationships 3 or less 4 to 5 6 or more Yes 49 43 34 No 31 47 62