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Question

According to an NRF survey conducted by BIGresearch, the average family spends about $237 on electronics

(computers, cell phones, etc.) in back-to-college spending per student. Suppose back-to-college family spending on electronics is normally distributed with a standard deviation of $54. If a family of a returning college student is randomly selected, what is the probability that:


(a) They spend less than $160 on back-to-college electronics?

(b) They spend more than $370 on back-to-college electronics?

(c) They spend between $115 and $175 on back-to-college electronics?


(Round the values of z to 2 decimal places. Round your answers to 4 decimal places.)


(a) P(x < 160) = 

enter the probability that they spend less than $160 on back-to-college electronics


(b) P(x > 370) = 

enter the probability that they spend more than $370 on back-to-college electronics

 

(c) P(115 < x < 175) = 

enter the probability that they spend between $115 and $175 on back-to-college electronics

 

Top Answer

p ( 1 1 5 &lt; x &lt; 1 7 5 ) = 0 . 1 1... View the full answer

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