6) A sample that is not representative of the population is more likely to yield

Question

6) A sample that is not representative of the population is more likely to yield biased estimates of the population parameters. a. True. b. False 7) The mean of the sample means is: a. A biased estimator of the population b. An unbiased estimator of the population mean c. Neither biased nor unbiased 8) Rejection of the null hypothesis is a conclusive proof that the alternative hypothesis is a. True b. False c. Neither 9) By taking a level of significance of 5% it is the same as saying a. b. c. We are 5% confident the results have not occurred by chance We are 95% confident that the results have not occurred by chance We are 95% confident that the results have occurred by chance 10)Two types of errors associated with hypothesis testing are Type I and Type II. Type I error is committed when: We reject the null hypothesis whilst the alternative hypothesis is true We reject a null hypothesis when it is true We accept a null hypothesis when it is not true a. b. c.

Explanation / Answer

6)A sample that is not representative of the population is more likely to yeild biased estimates of population parameters.

a) true

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