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The P-value for testing the hypoteheses, H0: ? = 30 versus HA: ? > 30, is 0.032.
Does the 95% confidence interval for ? include the value 30?
Please explain.
For each of the given population would the score of X=50 be considered central score (near middle of distribution) or extreme score (far out in the tail of the distribution )?
Use the normal approximation to the binomial to approximate the probability that a) exactly 96 flights are on time. b) at least 96 flights are on time.
What total size sample would be necessary if we wanted to estimate the true proportion to within ±0.08 using 90% confidence?
Define or give an example of a hypothetical construct. Explain why operational definitions are needed to define and to measure constructs.
The heights of adults in one town have a mean of 66.3 inches and a standard deviation of 3.3 inches. What can you conclude from Chebychev's theorem about the percentage of adults in the town whose heights are between 59.7 and 72.9 inches..
five applicants apply for two jobs. applicants a and b are male applicants c d and e are female. the personnel officer
Deductible with a $580 premium. (A $Y deductible means the insurance company pays X - Y for X >= Y and X for X
What would happen if the forest service agent took another sample of 31 trees? Would the slope change? Would the intercept change? What about a third sample of 31 trees?
Commercial A was selected by 45 out of 100 women and 80 out of 140 men. A large-sample 95% confidence interval for this difference is?
Air-America has a policy of booking as many as 14 people on an airplane that can seat only 12. (Past studies have revealed that only 92% of the booked passengers actually arrive for the flight.)
Should you use a two tailed test versus the one tailed test? If the hypothesis is non-directional and you predict a difference between the means but do not specify which mean will be higher a two tailed test should be used.
If you draw one ball from the urn what is the probability that it is blue or white?
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