And interpret the Area under a Normal Curve 7.2 Applications of the Normal Distribution
7.2.39-T
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The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips.
(a) What is the probability that a randomly selected bag contains between 1000 and 1400 chocolate chips, inclusive?
(b) What is the probability that a randomly selected bag contains fewer than 1025 chocolate chips?
(c) What proportion of bags contains more than 1200 chocolate chips?
(d) What is the percentile rank of a bag that contains 1450 chocolate chips?
(a) The probability that a randomly selected bag contains between 1000 and 1400 chocolate chips, inclusive, is
(Round to four decimal places as needed.)
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