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 < x < 1 7 5 ) = 0 . 1 1... View the full answer