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A physiologist wishes to study the effect of birth control pills on exercise capacity. Five female subjects who have never taken the pill have their maximal oxygen uptake measured during a treadmill session. The five subjects then take the pill for a specified length of time and their uptakes are measured again, as given below. Do the data provide sufficient evidence to indicate that the mean maximal oxygen uptake after taking birth control pills is less than the mean uptake before taking the pill? State the null and alternate hypothesis.
MAXIMAL OXYGEN UPTAKESUBJECT BEFORE AFTER
1 35.0 29.5
2 36.5 33.5
3 36.0 32
4 39.0 36.5
5 37.5 35.0
In a study, the carapace lengths (in mm) of Thenus lobster caught near Singapore measured: 78,66,65,63,60,60,58,56,52 and 50 ( the population data is approximately normal).
The sampling distribution of mean score is approximately Normal. It has mean. What is its standard deviation?
Determine the upper control limit (UCL) and lower control limit (LCL) for an X-Bar chart if six samples of subgroup size 5 (n=5) were collected, and the mean of the sample averages is 4.7 and mean of the sample ranges is 0.35.
Consider the following age data, which is the result of selecting a random sample of 20 United Airlines pilots.
To maximize Andre's probability of landing on the net, how far away from the cannon should he position the nearest edge of the net?
In a Sgallop poll of 1012 randomly selected adults, 9% said cloning of humans should be allowed. Use a .05 significance level to the test claim that less than 10% of all adults said that cloning should be allowed.
A man is on trial accused of murder in the first degree. The prosecutor presents evidence that he hopes will convince the jury to reject the hypothesis that the man is innocent. This situation can be modeled as a significance test with the followi..
A researcher want to estimate the mean shoulder height of both male and female bears within 0.25 centimeters. Determine the minimum sample size required to construct a 99% confident interval
If alpha level is changed from a = 0.05 to a = 0.01. What occurs to boundaries for critical region?
Household income does not tend to follow a normal distribution in a particular state, yet average income is approximately $45,000/year in this state, with a standard deviation of about $9000.
When we say we have a confidence level of 95%, what do you think our "margin of error" is? If we move the level of confidence from 95 to 99%, what will happen to our margin of error? What will happen to the width of our confidence interval?
A random sample of seven cars was selected; the cars were driven for two weeks without the booster and two weeks with the booster.
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