Refer to the previous block of questions (section 2.3 - exercise 15). let e1 be the event that the wafer comes from lot a, and let e2 be the event that the wafer is conforming. are e1 and e2 independent? explain.

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

The liabilities of cullumber are $99,000. owner’s capital is $143,000; drawings are $96,000; revenues, $467,000; and expenses, $301,000. what is the amount of cullumber company’s total assists?