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Q1) Describe the difference between sample and a sampling distribution. Your reply must be in complete sentences and you may use sketches to help you.
Q2) In developing confidence interval estimate for population mean, which of the following is true?
a) Larger the sample standard deviation, wider will be interval estimate, all other things being equal.
b) If population standard deviation is unknown, suitable critical value must be obtained from t-distribution.
c) Confidence interval developed from smaller sample size will have larger margin of error than one obtained by using a larger sample size, all other things being equal.
d) All of the above are true.
Find the probability that 4 of the 5 committee members belong to a union.Find the probability using hypergeometric distribution.
If they must form an ethics subcommittee of 4 members, how many different subcommittees are possible?
Determine the class with the greatest number of data values.
The correct set of hypotheses to test the effect of the bonus plan, the difference between the t and z distributions
Gigi has rolled a natural on four straight tosses of the dice. This excites the gamblers standing around the table.
If 25 men aged 18-24 are arbitrarily chosen, determine probability that their mean serum cholesterol level is between 165 and 200.
What sample size and acceptable level would result in a probability of .05 that a good batch will be rejected and a probability of .10 that a bad batch will be accepted?
A. Determine the regression equation. B. Determine the estimated sales if 40 contacts are made.
Compute an F-statistic for each linear construct and determine its significance.
One thing you have learned is that the tangency portfolio will give you the maximum Sharpe ratio. Consequently, you have constructed such a portfolio. What are you portfolio weights.
What is the probability that both defective lights will be found within three trials?
In the real world, a given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject the null hypothesis.
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