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Which of the following values is not typically used for ?

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Which of the following values is not typically used for ? A.0.50 B.0.05 C.0.10 D.0.01 Question 2 of 20 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. Compute the z or t value of the sample test statistic. A.z = 1.916 B.t = -1.916 C.z = 1.645 D.t = 1.916 Question 3 of 20 1.0 Points A type I error occurs when the: A.sample mean differs from the population mean B.test is biased C.null hypothesis is incorrectly rejected when it is true D.null hypothesis is incorrectly accepted when it is false Question 4 of 20 1.0 Points The “Pizza Hot” manager commits a Type I error if he/she is A.staying with old style when new style is no better than old style B.switching to new style when it is no better than old style C.switching to new style when it is better than old style D.staying with old style when new style is better Question 5 of 20 1.0 Points A type II error occurs when: A.the sample mean differs from the population mean
B.the null hypothesis is incorrectly rejected when it is true C.the null hypothesis is incorrectly accepted when it is false D.the test is biased Question 6 of 20 1.0 Points You conduct a hypothesis test and you observe values for the sample mean and sample standard deviation when n = 25 that do not lead to the rejection of H 0 . You calculate a p-value of 0.0667. What will happen to the p-value if you observe the same sample mean and standard deviation for a sample size larger than 25? A.The p – value may increase or decrease B.The p – value stays the same C.The p – value decreases D.The p – value increases Question 7 of 20 1.0 Points Suppose that the mean time for a certain car to go from 0 to 60 miles per hour was 7.7 seconds. Suppose that you want to test the claim that the average time to accelerate from 0 to 60 miles per hour is longer than 7.7 seconds. What would you use for the alternative hypothesis? A.H 1 : < 7.7 seconds B.H 1 : 7.7 seconds C.H 1 : = 7.7 seconds D.H 1 : > 7.7 seconds Question 8 of 20 1.0 Points Results from previous studies showed 79% of all high school seniors from a certain city plan to attend college after graduation. A random sample of 200 high school seniors from this city reveals that 162 plan to attend college. Does this indicate that the percentage has increased from that of previous studies? Test at the 5% level of significance. What is your conclusion? A.More seniors are going to college B.Reject H 0 . There is enough evidence to support the claim that the proportion of students planning to go to college is now greater than .79. C.Cannot determine
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Which of the following values is not typically used for ? A.0.50
B.0.05
C.0.10
D.0.01 1.0 Points
Question 2 of 20
In an article appearing in Today’s Health a writer states that the average number...

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