The body mass index (BMI) of an individual is one measure that is used to judge whether an individual is overweight or not. A BMI between 20 and 25 indicates that one is at a normal weight. In a survey of 750 men and 750 women, the Gallup organization found that 203 men and 270 women were normal weight. Is there significant evidence to conclude that there is a difference in the proportion of men and women who are normal weight.
1. State the null hypothesis and alternative hypothesis
2. What is the test statistic?
3. What is the critical value?
4. What is the decision regarding the null hypothesis?