A 95 confidence interval for the population proportion of professional tennis players who earn more ...

A 95 confidence interval for the population proportion of professional tennis players who earn more than 2 million dollars a year is found to be between .82 and .88 . Given this information, the sample size that was used was approximately:
 a. 545
  b. 382
  c. 233
  d. 387
  e. 480

Q. 2

Nonparametric methods can be used in situations where parametric methods cannot be used.
  Indicate whether the statement is true or false

Q. 3

Given that n is the number of trials of a random experiment, N is population size, M is the number of population units with the success characteristic, and p is the probability of success in the first trial, the mean of the hypergeometric random variable's probability distribution always equals:
 a. n
  b. np
  c. n(N/M)
  d. none of these

Q. 4

A random sample of 400 Michigan State University (MSU) students were surveyed recently to determine an estimate for the proportion of all MSU students who had attended at least three football games. The estimate revealed that between .372 and .458 of all MSU students attended. Given this information, we can determine that the confidence coefficient was approximately:
 a. .99
  b. .95
  c. .92
  d. .90
  e. .88

Q. 5

While nonparametric methods require few assumptions about the parent population, they are generally harder to apply than their parametric counterparts.
  Indicate whether the statement is true or false

Q. 6

The hypergeometric probability distribution is identical to:
 a. the binomial distribution
  b. the Poisson distribution
  c. any continuous probability distribution
  d. none of these

Q. 7

The term confidence level refers to:
 a. the absolute number of interval estimates that can be expected to contain the actual value of the parameter being estimated when the same procedure of interval construction is used again and again
  b. the percentage of interval estimates that can be expected to contain the actual value of the parameter being estimated when the same procedure of interval construction is used again and again
  c. the range of values among which an unknown population parameter can presumably be found
  d. the sum of an estimator's squared bias plus its variance, which indicates the degree to which it is consistent, efficient, and unbiased
  e. the percentage of interval estimates that can be expected to contain the actual value of the parameter being estimated when the same procedure of interval construction is used again and again and the range of values among which an unknown population parameter can presumably be found