# Question 8 of 20 10 10 points which of the following

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Question 8 of 20 1.0/ 1.0 Points Which of the following statements are true of the null and alternative hypotheses? A.Exactly one hypothesis must be true B.Both hypotheses must be true C.It is possible for both hypotheses to be true
D.It is possible for neither hypothesis to be true Answer Key: A Question 9 of 20 1.0/ 1.0 Points A lab technician is tested for her consistency by taking multiple measurements of cholesterol levels from the same blood sample. The target accuracy is a variance in measurements of 1.2 or less. If the lab technician takes 16 measurements and the variance of the measurements in the sample is 2.2, does this provide enough evidence to reject the claim that the lab technician’s accuracy is within the target accuracy? At the = .01 level of significance, what is your conclusion?
Question 10 of 20 1.0/ 1.0 Points In an article appearing in Today’s Health a writer states that the average number of calories in a serving of popcorn is 75. To determine if the average number of calories in a serving of popcorn is different from 75, a nutritionist selected a random sample of 20 servings of popcorn and computed the sample mean number of calories per serving to be 78 with a sample standard deviation of 7. State the null and alternative hypotheses. A.H 0 : = 75, H 1 : > 75 B.H 0 : 75, H 1 : > 75
Question 11 of 20 1.0/ 1.0 Points The form of the alternative hypothesis can be:
Part 2 of 3 - 3.0/ 6.0 Points Question 12 of 20 1.0/ 1.0 Points Accepted characters : numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. A survey determines that mint chocolate chip is the favorite ice cream flavor of 6% of consumers. An ice cream shop determines that of 240 customers, 18 customers stated their preference for mint chocolate chip. Find the P-value that would be used to determine if the percentage of customers who prefer mint chocolate chip ice has increased at a 5% level of significance. P-value: 0.1639