Question 10 of 50 : Select the best answer for the question. 10. Based on this scenario, determine whether you would use a 2- statistic, t-statistic, neither, or both, to form a 95% confidence interval. Random sample of size n = 23 from a normal distribution with unknown mean u and standard deviation 0 O A. tstatistic O B. Both 0 C. Neither O D. zstatistic Question 11 of 50 : Select the best answer for the question. 11. What's the appropriate method to assign probabilities when data is available to estimate the proportion of the time the experimental outcome will occur if the experiment is repeated a large number of times? 0 A. Subjective method 0 B. Basic method 0 C. Classical method 0 D. Relative frequency method Question 12 of 50 : Select the best answer for the question. 12. The random variable x has the following discrete probability distribution: X 3 5 7 9 p(x) .1 .2 4 .2 .1 Find P(x = 9). O A. .1 O B. .4 O C. .9 O D. .2