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A manufacturer of nickel-hydrogen batteries randomly selects 100 nickel plates for test cells, cycles them a specified number of times, and determines that 14 of the plates have blistered.
Null Hypothesis: The proportion of all nickel plates that blister under the given circumstances is equal to 0.10.
Alternative Hypothesis: The proportion is larger than 0.10.
If it is really the case that 15% of all plate blister under these circumstances and a sample size of 100 is used, how likely is it that the null hypothesis above will not be rejected by the level of 0.05 test?
Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using z test to test differences between two means?
Each subject's heart rate, blood pressure, oxygen uptake, and perceived exertion during snow removal were compared with the values obtained during treadmill and arm- crank ergometer testing.
What is the difference between the critical-value method and the p-value method of hypothesis testing? Include in your post how the question's topic pertains to your health discipline.
Since over 10,000 students in his state took the Math SAT, he can show that the P-value for testing whether the mean score in his state is more than the national average of 480 is less than 0.0001. What we can conclude from this?
suppose that a health expert has claimed that 17 of college students smoke cigarettes. to investigate this claim
Plot a scatter diagram and what kind of relationship exists between these two variables
question a health psychologist was interested to see if self-reported stress scores resulted in significantly different
What is a test of a proportion and give an example. What test do you use when one sample is small and the other large?
If the airline books 79 people on a flight for which the maximum number is 77, what is the probability that the number of people who show up will exceed the capacity of the plane?
When 40 people used the Weight Watchers diet for one year, their weight losses had a standard deviation of 4.9 lb (based on data from "Comparision of the Atkins, Ornish, Weight Watchers, abd Zone Diets for Weight Loss and Heart Disease Reduction, ..
Is it possible to normalize the data when the population shape has a known skew? How would you demonstrate the central limit theorem to your classmates?
a sample of the homes currently offered for sale revealed that the mean asking price is 75900 the median 70100 and the
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