What is the lowest score that would still place

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1.) The distribution of room and board expenses per year at a four year college is normally distributed with a mean of $5,850 and a std deviation of $1125. Random samples of size 20 are drawn from the population and the mean of each sample is determined. Use the central limit theorem to find the mean and std. deviation of the sampling distribution of sample means described.

2.) In a standardized IQ test, scores were normally distributed with a mean score of 100 and a std. deviation of 15.

a.) What is the lowest score that would still place a student in the top 5% of scores?

b.) What is the highest scored that would still place a person in the bottom 10% of scores?

c.) What interval would place the student in the middle 50% of scores.

Reference no: EM132854382

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