According to an NRF survey conducted by BIGresearch, the average family spends about $ 229 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 $ 165 on back-to-college electronics? (b) They spend more than $ 370 on back-to-college electronics? (c) They spend between $ 120 and $ 190 on back-to-college electronics? (Round the values of z to 2 decimal places, e.g. 1.25. Round your answers to 4 decimal places, e.g. 0.2531.) (a) P(x < 165) = (b) P(x > 370) = (c) P( 120 < x < 190) =

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According to an NRF survey conducted by BIGresearch, the average family spends about $ 229 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 $ 165 on back-to-college electronics?
(b) They spend more than $ 370 on back-to-college electronics?
(c) They spend between $ 120 and $ 190 on back-to-college electronics?
(Round the values of z to 2 decimal places, e.g. 1.25. Round your answers to 4 decimal places, e.g. 0.2531.)
(a) P(x < 165) =
(b) P(x > 370) =
(c) P( 120 < x < 190) =
Transcribed Image Text:According to an NRF survey conducted by BIGresearch, the average family spends about $ 229 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 $ 165 on back-to-college electronics? (b) They spend more than $ 370 on back-to-college electronics? (c) They spend between $ 120 and $ 190 on back-to-college electronics? (Round the values of z to 2 decimal places, e.g. 1.25. Round your answers to 4 decimal places, e.g. 0.2531.) (a) P(x < 165) = (b) P(x > 370) = (c) P( 120 < x < 190) =
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