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The number of chocolate chips in an 18 ounce bag of chocolate chips os approxiamately normally distributed with a mean of 1252 chipos and standard deviation 129 chips.
(a) What is the probability that a randomly selected bag contains between 1100 and 1400 chocolate chips, inclusive?
(b) What is the probability that a randomly selected bag contains fewer 1025 chocolate chips?
(c) What proportion of bags contains more than 1175 chocolate chips?
(d) What is the percentile rank of a bag that contains 1450 chocolate chips?
In Excel, which of the following functions is used to conduct a hypothesis test (using the p -value) for a population variance
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