Question

Question 1 (1 point)

An analysis of 78 Wall Street traders showed that 47 of their stock picks beat the market average. What is the estimate of the population proportion? What is the standard error of this estimate?

Question 1 options:

	1) Estimate of proportion: 0.397, Standard error: 0.0063.
	2) Estimate of proportion: 0.603, Standard error: 0.0554.
	3) Estimate of proportion: 0.603, Standard error: 0.0063.
	4) Estimate of proportion: 0.397, Standard error: 0.0554.
	5) The true population proportion is needed to calculate this.

Question 2 (1 point)

Suppose you are interested in measuring the amount of time, on average, it takes you to make your commute to school. You've estimated that the average time is 37.1 minutes with a standard deviation of 6.864 minutes. Assuming that your estimated parameters are correct and the commute time is normally distributed, what is the probability that the average commute time of 12 random days is greater than 39.25 minutes?

Question 2 options:

	1) 0.8611
	2) 0.3771
	3) 0.6229
	4) 0.1389
	5) 0.8882

Answer 1