The mean amount spent by a family of four on food per month is$500 with a standa

Question

The mean amount spent by a family of four on food per month is$500 with a standard deviation of $75. Assuming that the foodcosts are normally distributed, what is the probability that afamily spends less than $410 per month? Which is the correct answer? A. 0.2158 B. 0.8750 C. 0.0362 D. 0.1151 The mean amount spent by a family of four on food per month is$500 with a standard deviation of $75. Assuming that the foodcosts are normally distributed, what is the probability that afamily spends less than $410 per month? Which is the correct answer? A. 0.2158 B. 0.8750 C. 0.0362 D. 0.1151

Explanation / Answer

z = (410-500)/75 = -1.2 look this up in a Z table and get 0.1151, so the answer is D

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