Suppose, at a local movie theater, the amount of money that a man spends at the concession has an average of 16 dollars and a standard deviation of 4.8 dollars. As well, the amount of money that a woman spends at the concession has an average of 13 dollars and a standard deviation of 3.6 dollars. (a) What is the expected difference in the amount spent by a man and a woman at the concession? Answer: dollars (b) What is the standard deviation for this difference? (Round your answers to four decimal places, if needed.) Answer: dollars (c) What is the expected total amount spent by a man and a woman at the concession? Answer: dollars (d) What is the standard deviation for this total amount? (Round your answers to four decimal places, if needed.) Answer: dollars
Suppose, at a local movie theater, the amount of money that a man spends at the concession has an average of 16 dollars and a standard deviation of 4.8 dollars. As well, the amount of money that a woman spends at the concession has an average of 13 dollars and a standard deviation of 3.6 dollars.
(a) What is the expected difference in the amount spent by a man and a woman at the concession?
Answer: dollars
(b) What is the standard deviation for this difference? (Round your answers to four decimal places, if needed.)
Answer: dollars
(c) What is the expected total amount spent by a man and a woman at the concession?
Answer: dollars
(d) What is the standard deviation for this total amount? (Round your answers to four decimal places, if needed.)
Answer: dollars
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