The mean amount spent by a family of four on food is $500 per month with...
The mean amount spent by a family of four on food is $500 per month with a standard deviation of $50. Assuming that food costs are normally distributed.
1. What is the probability that a family spends less than $400 per month ?
A. 0.0359. B. 0.9641. C. 0.4641. D. 0.1151 E. 0.0228
2. What is the probability that a family spends between $450 and $600 per month ?
A. 0.3413. B. 0.1587. C. 0.4732. D. 0.8185. E. 0.0728
3. Out of the famalies of four, 95% spent how much on food (round to the closest whole number)?
A. $583 B. $450. C. $565. D. $560. E. None of the above
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The mean amount spent by a family of four on food is $500 per
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