63 and a standard deviation of 2. Estimate the percentage of scores that were
(a) between 59 and 67.
%
(b) above 69.
%
(c) below 59.
%
(d) between 57 and 67.
%
d deviation of 18. What is the minimum score needed to be in the top 10% of the scores on the test? Carry your intermediate computations to at least four decimal places, and round your answer to one decimal place.
we know that the mean score of fifty male freshmen on an arithmetic test is 74 and the mean score of thirty female freshmen on the same test is 68. Let xi and yi be the scores of the ith male and the ith female, respectively. Find the summation of both situations.