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Which of the following would be most helpful in assessing the practical significance of a test of hypotheses about a proportion?
A) Test the hypotheses using significance level α = 0.001.
B) Report the P-value of your test.
C) Take another sample and retest just to make sure the results are not due to chance.
D) Construct a 99% confidence interval for the proportion in order to see the magnitude of the proportion.
The ages of cars owned by all employees of a large company have a bell shaped distribution with a mean of 8 years and a standard deviation of 2 years. Using the empirical rule, find the approx. percentage of cars (owned by those employees) that are b..
Suppose the random variable x is best described by a normal distribution with µ = 24 and σ = 2.7. Find the z-score that corresponds to each of the following x values.
The correct set of hypotheses to test the effect of the bonus plan, the difference between the t and z distributions
Do these data suggest a statistically significance difference between the proportions of drug-resistant cases in the two states? Use a 0.02 level of significance and computed value of 2.37.
Can we conclude that the mean time for a game is less than 3.50 hours? Use the .05 significance level.
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance and (d) standard deviation of probability distribution and (e) interpret results in context of real life situation.
A sample of 50 male and 50 female infants were put on an experimental infant formula. After two weeks the parents of each infant were asked to fill out a questionnaire concerning infant satisfaction on the formula. One of the questions was "Did Ba..
Explain your answer to someone who is familiar with the t test for a single sample, but not with the t test for independent means.
Results were analyzed using one -way ANOVA and included SSTR =7 , 102 and SSE = 10 ,511. Are all 8 tapes equally appealing on average? Determine p value?
Using the dataset, produce a graph of per capita GDP for Argentina, China, and Canada from 1965 to 1995. Is inequality between these countries increasing?
By using this data and incorporating seasonal effects, predict quarterly turnover for 2010.
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