statistics short homework
Question # 00135838
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Updated on: 11/17/2015 10:15 PM Due on: 11/19/2015
Hypothesis Testing-Single Sample
Use a level of 5% unless otherwise stated. If the sample size is less than n=30, use a "t" distribution instead of "Z." Do not compute p-value for "t"distribution problems. Just compare the test value of "t" with the critical value corresponding to the given level
75. From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation
of that age remains constant of around 2.1 years. A survey of 40 smokers of this generation was done to see if the mean
starting age is at least 19. The sample mean was 18.1 with a sample standard deviation of 1.3. Do the data support the claim
at the 5% level?
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