Chapter 1, Problem 11P

According to a survey, 85% of American adults eat salad at least once a week. A nutritionist suspects that the percentage is higher than this. She conducts a survey of 200 American adults and finds that 171 of them eat salad at least once a week. Conduct the appropriate test that addresses the nutritionist's suspicion. Use an a = 0.05 level of significance. State the null and alternative hypothesis: What parameter are we testing? Ho: H₁: Assumptions: SRS, n < 0.05N, npo (1 - po) By hand, test statistic is (Round to 5 decimals): P-value. Round to 4 decimals: Conclusion: There is (enter sufficient or insufficient) evidence at the a = 0.05 level of significance to conclude that the percentage of adult Americans that eat salad at least once a week is ("equal to" or "higher than" or "less than" or "not equal to") 85%.

In Europe, nutritional information is given in kilojoules instead of nutritional calories. A packet of soup has the following nutritional information: 250 ml of soup = 235 kilojoules How would that same packet be labeled in the US if the information has to be given in nutritional calories per cup? (2 cups to 1 pint)

A commercially available product contains 18 g of ointment with a drug concentration of 5 % w/w. A prescription calls for fortification of the ointment to a 15 % w/w concentration. What mass of pure drug, in units of grams, should be added to the ointment to make an ointment of 15 % w/w concentration?