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A statistical study reported that a drug was effective with a p-value of .042.
(a) Is this true? An effective sample may be found about 42 times in 1000 samples.
(b) Is the drug effective at alpha = 0.05?
(c) Would a drug that has a p-value of .087 be more effective?
Do not forget to test for any applicable difference in means (Tukey implies).
Is it sensible to conclude that this set of n=16 people is not representative random sample of registered voters?
FBI Report Do greater universities tend to have more property crime, would you speek that the correlation is low, moderate or high
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A sample of n observations is taken from a population. When performing statistical inference about a population variance, the appropriate chi-square distribution has:
Is there a significant difference between the scores between the Republicans and the Democrats?
Test hypothesis that calories of two populations are equal. Illustrate all steps of the hypothesis testing process. Points will be deducted for missing parts.
The length of a Colorado brook trout is normally distributed. What is the probability that a brook trout's length, (Round your answers to 4 decimal places.)
Calculated test statistic, decision about the null hypothesis interpretation of results, and a list of references consulted.
A local bank wants to install motion detector burglar alarms. Each has a 70% chance of detecting a burglar. If the bank wants to be 99% certain of detecting a burglar how many need to be installed?
When the level of confidence and sample size remain the same, a confidence interval for a population proportion π will be __________ when p(1-p) is larger than when p(1-p) is smaller.
What is the possibility that for a arbitrarily selected customer the service time could exceed 3 minutes?
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