Question: A certain mental development index for infants is a standardized measure used in observing infants over time. It is approximately normal with a mean of

A certain mental development index for infants is a standardized measure used in observing infants over time. It is approximately normal with a mean of 105 and a standard deviation of 15. Complete parts a through d. a. Find the z-score corresponding to the upper quartile (Q3) of a normal distribution. The z-score that corresponds to the upper quartile (Q3) of a normal distribution is (Round to two decimal places as needed.)

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