Posted: February 2nd, 2017

Calculate the z-score for an x? of 46.5 from a sample of size 35. Could this z-score be used in calculating probabilities using Table 3 in Appendix B? Why or why not?

• Calculate the z-score for an x? of 46.5 from a sample of size 35.
• Could this z-score be used in calculating probabilities using Table 3 in Appendix B? Why or why not?

Question 3

State the null and alternative hypotheses for each of the following:

• You want to show an increase in buying and selling of single-family homes this year when compared with last year’s rate.
• You are testing a new recipe for “low-fat” cheesecake and expect to find that its taste is not as good as traditional cheesecake.
• You are trying to show that music lessons have a positive effect on a child’s self-esteem.
• You are investigating the relationship between a person’s gender and the automobile he or she drives—specifically you want to show that more males than females drive truck-type vehicles.