1. There is a new drug that is used to treat leukemia. The following data represents the remission time in weeks for a random sample of 21 patients using the drug.
10 7 32 23 22 6 16
11 20 19 6 17 35 6
10 34 32 25 13 9 6
Let X be a random variable representing the remission time in weeks for all patients using the new drug. Assume that the distribution of x is normal. A previously used drug treatment has a mean remission time of 12.5 weeks. Does the data indicate that the mean remission time using the new drug is different from 12.5 week at a level of significance of 0.01?
State the null hypothesis:
A. µ=12.5
B. µ≠12.5
C. µ<12.5
D. µ>12.5
Answer: Choose an item.
State the alternative hypothesis:
A. µ=12.5
B. µ≠12.5
C. µ<12.5
D. µ>12.5
Answer: Choose an item.
Let X be a random variable representing the remission time in weeks for all patients using the new drug. Assume that the distribution of x is normal. A previously used drug treatment has a mean remission time of 12.5 weeks. Does the data indicate that the mean remission time using the new drug is different from 12.5 week at a level of significance of 0.01?
State the level of significance:
A. 0.001
B. 0.01
C. 0.05
D. 0.10
Answer: Choose an item.
Let X be a random variable representing the remission time in weeks for all patients using the new drug. Assume that the distribution of x is normal. A previously used drug treatment has a mean remission time of 12.5 weeks. Does the data indicate that the mean remission time using the new drug is different from 12.5 week at a level of significance of 0.01?
State the test statistic:
A. 0.058
B. 0.552
C. 1.058
D. 2.106
Answer: Choose an item.
Perform calculations
Please write down your solutions or copy and paste your Excel output here:
Then answer the following two questions:
Critical value:
A. 0.050
B. 1.960
C. 2.086
D. 2.845
Answer: Choose an item.
P-value:
A. p <0.001
B. 0.001 ≤ p <0.01
C. 0.01 ≤ p <0.05
D. 0.05 ≤ p
Answer: Choose an item.
Statistical Conclusion
A. Reject the null hypothesis
B. Do not reject the null hypothesis
Answer: Choose an item.
Experimental Conclusion
A. There is sufficient evidence to conclude that the mean remission time using the new drug is different from 12.5 week at a level of significance of 0.01.
B. There is no sufficient evidence to conclude that the mean remission time using the new drug is different from 12.5 week at a level of significance of 0.01.
Answer: Choose an item.
2. We wish to test the claim that the mean body mass index (BMI) of men is equal to the mean BMI of women. Use the data below to test this claim.
Men Women
20 29
37 28
46 20
23 28
20 42
23 45
21 19
15 45
20 16
28 32
27 38
20 45
30 41
22 34
27 28
38 21
29 42
20 21
16 30
27 28
42 30
37 43
39 40
39 16
32 44
16 15
21 16
26 20
17 41
39 16
State the Null Hypothesis
A. μ1 = μ2
B. μ1 ≠ μ2
C. μ1 > μ2
D. μ1 < μ2
Where μ1 and μ2 are the mean body mass index for men and women, respectively.
Answer: Choose an item.
State the alternative hypothesis:
A. μ1 = μ2
B. μ1 ≠ μ2
C. μ1 > μ2
D. μ1 < μ2
Answer: Choose an item.
State the Level of significance
State the level of significance:
A. 0.001
B. 0.01
C. 0.05
D. 0.10
Answer: Choose an item.
State the test statistic (its absolute value, for example the absolute value of -1.5 is 1.5):
A. 0.058
B. 0.515
C. 1.273
D. 2.108
Answer: Choose an item.
Perform calculations
Please write down your solutions or copy and paste your Excel output here:
Then answer the following two questions:
Critical value:
A. 0.050
B. 1.960
C. 2.002
D. 2.045
Answer: Choose an item.
P-value:
A. p <0.001
B. 0.001 ≤ p <0.01
C. 0.01 ≤ p <0.05
D. 0.05 ≤ p
Answer: Choose an item.
Statistical Conclusion
A. Reject the null hypothesis
B. Do not reject the null hypothesis
Answer: Choose an item.
Experimental Conclusion
There is sufficient evidence to conclude that the mean body mass index (BMI) of mean is
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