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A poll was conducted to assess public support for the BC Liberal party before the last election. THe poll selected 510 people from the list of registered voters, and 33.3% of respondents indicated that they planned to vote for the BC Liberal Party.
a) What is the population of interest for this survey?
b) What is the parameter that is being estimated by the results of this survey?
c) Find the margin of error for the estimator in this survey for a 95% level of confidence
d) In part c, what does the 95% level of confidence imply in relation to the margin of error?
e) Suppose that someone conducting a similar study wishes to have a margin of error of 1%. What sample size is required to achieve a margin of error at least as small as 1%?
The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
Standard deviation of 7. At 0.01 significance level, is there more variation in first population?
A point estimate for the difference between the mean purchases of the users of the two credit cards is:
X is a continuous random variable uniformly distributed on [20, 45] that is, the end points c = 20 and d = 45.
Describe the sampling distribution model of this mean.
Multiple choice question based on multiple regression - The coefficient of determination for this model is
Is there a relationship between sales and newspaper advertising? Support your answer?
Compute the probability that debt for a randomly selected borrower with good credit is more than $18,000?
Determine the probability that tire wears out before 70,000 miles?
To test there is significant difference among the mean of income using ANOVA. A developer of real estate is considering investing in a shopping mall on the outskirts of Atlanta, Georgia.
To demonstrate the process is in control or out of control utilizing p-chart. A company which produces nails has retained you as a consultant.
Draw the suitable 2x2 table, compute and interpret suitable measure of association.
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