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In a past election, the voter turnout was 51%. In a survey, 843 subjects were asked if they voted in the election. Find the mean and standard deviation fot the numbers of voters in groups of 843. In the survey of 843 people, 463 said that they voted in the election. In this result consistent with the turnout, or is this result unlikely to occur with a turnout of 51% Why or why not? Based on these results, does it appear that accurate voting results can be obtained by asking voters how they acted?
A regression of height (X, in inches) on hourly earnings (Y, in dollars), yields the following results: What is the value of b1 in the regression Y = b0 + b1X?
Find the weighted mean of three test scores for a student (85, 90, 75) where the first test counts for 20%, the second test counts for 30%, and the third counts for 50% of the final grade.
Determine the probability that employee will make 28 or more sales during 100-call shift? Allocate a Random Variable x.
Compute the projected profit for the order quantities suggestedby the management team under three scenarios: worst case in whichsales = 10,000 units, most likely case in which sales = 20,000units.
you are picking a bouquet of 20 flowers for your mother at random from a garden with 25 coneflowers 35 daisies and 42
a local health center noted that in a sample of 400 patients 80 were referred to them by the local hospital.a. provide
A random sample of 100 automobiles has a mean speed of 36 miles per hour and a standard deviation of 5 miles per hour. Is there enough evidence to support the claim at alpha=0.05?
a) 95% of confidence intervals generated will include the sample mean X. b) 5% of the confidence intervals generated will include the true mean μ
Is there a significant difference in the proportions of patients reporting pain relief? Run the test at a 5% level of significance.
Create a 95% confidence interval for the population mean days absent for sickness based on this sample. Select the answer closest to your results.
A unit for a telecommmunication system is to be designed so that the probability that it fails during a period of five years does not exceed 0.4. the unit is to be made up of (n) effectively identical componants each with an exponential failure di..
A regional director responsible for business development in the state of pennsylvania is cocerned about the number of small business failures. If the mean of small businsses failures per month is 10,
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