1) The quarterly returns for a group of 69 mutual funds with a mean of 2.3% and a standard deviation of 5.9% can be modeled by a normal model. Based on the model N(0.023, 0.059), what are the cut off values for the:
A) Highest 40% of these funds?
B) Lowest 30%?
C) Middle 60% ?
D) Highest 70%
2) A certain tennis player makes a successful first serve 75% of the time. Assume that each serve is independent of the others. If she serves 5 times,
A) All serves in?
B) Exactly 4 serves in?
C) At least 3 Serves in?
3) Two standardized tests, test A & test B, use very different scales. Assume that in one year the distribution of scores on test A can be modeled by N(700, 75) and scores on test B can be modeled by N(27, 5). If an applicant to a university has taken test A and scored 910 and another student has taken test B and scored 33, compare these students score using Z-values. Which one has a higher relative score?
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