Question: Using the file on the Web named Add.dat, described in Appendix Data Set, a. What is the probability that a person drawn at random will

Using the file on the Web named Add.dat, described in Appendix Data Set,

a. What is the probability that a person drawn at random will have an ADDSC score greater than 50 if the scores are normally distributed with a mean of 52.6 and a standard deviation of 12.4?

b. What percentage of the sample actually exceeded 50?

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