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(Solved by Expert Tutors) A widely used measure of infant development is the psychomotor developm


index. Since the PDI has been used so frequently we have a pretty good idea of the population mean and standard deviation for the scores on the PDI. The mean for scores is 100 and the standard deviation is 15. Given this what is the probability that:a) In a sample of 100 infants the mean PDI score is 102 or greaterb) in a sample of 100 infants the mean PDI score is 103 or lessc) in a sample of 36 infants the mean PDI score is 103 or lessPlease explain the solutions for each so that I can understand the process to the answers for a,b, and c.

 


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Apr 19, 2020

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