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An exit poll of 1000 randomly selected voters found that 535 favored the incumbent candidate.
a. Is the race too close to call at 95% level of confidence?
b. Is the race too close to call at 99% level of confidence?
c. Based on our poll what is the margin of error of the proportion of voters favoring the incumbent?
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
The random variable x is known to be uniformly distributed between 1.0 and 1.5.
Compute SS, variance, and standard deviation for following population of N = 7.Scores: 8, 1, 4, 3, 5, 3, and 4. The definitional formula works well with these scores. Use the definitional formula to compute SS.
It is reported in USA Today that the average flight cost nationwide is $342.59. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $342.59. What are the appropriate hypoth..
What is the appropriate set of hypotheses to test such that a possible outcome of the test would indicate;
If a card is drawn at random from a standard 52-card deck, what is the probability that the card drawn is one of the following?
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Then explain your answer to someone who has never had course in statistics (but who is familiar with mean, standard deviation, and Z scores.)
An aptitude test has a mean of 220 and standard deviation of 10. find the corresponding z score for:
Normalized matrix for one decision criterion at Firm T is given below.
Find the lowest possible score a candidate can score and still qualify. Assume the scores are normally distributed.
Based on chi-square table, what is the most correct statement which can be made about the p-value for the test?
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