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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
17
35
34
25
13
9
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
State the Alternatice Hypothesis
State the Level of significance
State the Test Statistic
Perform Calculations
Statistical Conclusion
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 to the right to test this claim.
Men
Women
29
37
28
46
42
45
21
15
27
38
30
41
43
39
40
44
26
Statistical Conclusion.
Must the company replace old truck? If so which of new trunks must they use? Describe in detail.
1. What is the distinction between distribution-free methods and nonparametric methods?
construct a 90% confidence interval for the true mean weight. what sample size would be necessary to estimate the true weight with an error +/- 0.03 grams with 90% confidence?
a. Construct a simple tabulation in which the counts are according to the highest degree level offered. b. Construct a cross-tabulation describing the schools, using the highest degree level offered and whether the school is public or private as th..
Consider babies born in the "normal" range of 37 - 43 weeks gestational age. Extensive data supports the assumption that for such babies born in the United States, birth weight is normally distributed with mean = 3432 grams and standard devia..
A biometric security devise using fingerprints erroneously refuses to admit 1 in 1000 authorized persons from a facility containing classified information. The device will erroneously admit 1 in 10,00,000 unauthorized persons.
Suppose a simple random sample of 20 non-English student have an average math score on the SAT exam of 528. What are the appropriate hypotheses?
a hat contains n coins f of which are fair and b of which are biased to land heads with probability 23. a coin is drawn
The following sample data were obtained from three populations where the variances were not equal, and you wish to compare the populations.
mark harris production manager of medical electronics inc. is preparing for the delivery of one of his companys new
Methods Used to Conduct International Business Duve, Inc., desires to penetrate a foreign market with either a licensing agreement with a foreign firm or by acquiring a foreign firm.
it is found that when a particular 4-sided die is rolled a 1 occurs 26.9 of the time a 2 occurs 23.8 of the time a 3
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