Which of the following statements is false?
a. The width of a confidence interval estimate of the population mean narrows when the sample size increases.
b. The width of a confidence interval estimate of the population mean narrows when the value of the sample mean increases.
c. The width of a confidence interval estimate of the population mean widens when the confidence level increases.
d. Both The width of a confidence interval estimate of the population mean narrows when the sample size increases and The width of a confidence interval estimate of the population mean widens when the confidence level increases..
e. None of these.
Q. 2If a tie occurs in a set of ranked data, the data that form the tie are removed from the set.
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Q. 3The hypergeometric random variable is the number of successes achieved when a random sample of size n is drawn with replacement from a population of size N within which M units have the characteristic that denotes success.
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Q. 4For a given sample size and given confidence coefficient, the closer the population proportion p to 1.0, the greater the margin of error will be.
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Q. 5One of the advantages that the nonparametric tests have is the necessity for less restrictive assumptions.
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Q. 6The hypergeometric probability distribution formula calculates the probability of x successes when a random sample of size n is drawn without replacement from a population of size N within which M units have the characteristic that denotes success, and N - M units have the characteristic that denotes failure.
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Q. 7One way to reduce the margin of error in a confidence interval is to decrease the confidence coefficient.
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Q. 8The line of best fit, provided one exists, will best predict the value of the dependent, or output, variable from a value of the independent, or input, variable.
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