the answer and solution should be typewritten

If 3 books are picked at random from a shelf containing 5 novels, 3 books of poems and a dictionary, what is the probability that 2 novels and 1 book of poems are selected? A. 8/16 B. 9/13 C. 5/14 D. 7/15 O A O B O c O D Testing Hypothesis A manufacturing process produces machine parts with measurements the standard deviation of which must be no more than 0.52 mm. A random sample of 20 parts in a given lot revealed a standard deviation in measurement of 0.568 mm. At a = 0.05, is there sufficient evidence to conclude that the standard deviation of the parts is outside the required guidelines? Yes, there is sufficient evidence to O conclude that the standard deviation is outside the guidelines. No, there is insufficient evidence to O conclude that the standard deviation is outside the guidelines. A sample of 14 commuters in Cebu showed the average of the commuting times was 33.2 minutes. If the standard deviation was 8.3 minutes, find the 95% confidence interval of the true mean. A. 28.4