A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 6.6 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds. When evaluated using the

Women athletes at UČLA have a long-term graduation rate of 96%. Over the past several years, a random sample of 40 women athletes at UCLA showed that 37 eventually graduated. Do the data indicate that the population proportion of women athletes who graduate from UCLA is now less than 96%? Use a 5% significance level. You must identify the following in your answer in order to receive credit. Upload your response 1. State Ho and H1 2. Find the test statistic z (Round to two decimal places) 3. Find the p-value (Round to four decimal places) 4. Indicate the calculator key you used. 5. Do you reject Ho or fail to reject Ho? 6. State your conclusion: Upload Choose a File « Previous Next

A dietitian wishes to see if a person's cholesterol level will change if the diet is supplemented by a certain mineral. Seven subjects were pretested and then took the mineral supplement for a six-week period. The results are shown below in the table. Use a paired samples t-chart at a = 0.01 significance level to see difference (Before - After) between the cholesterol levels. State the hypotheses and conclusion. Also, conduct a 99% confidence interval. Subject 1 Before 210 After 190 2 205 170 3 208 210 4 192 188 5 178 173 6 244 228 7 211 198

A hospital claims that 40% of its patients request a telephone. you are interested in disproving this claim. you select a random sample of 250 patients and find that 85% requested a telephone. what is the test statistic for this test?