The mean and the standard deviation of the 8 numbers shown are 10.0 and 0.3, repetively. What percent of the 8 numbers are with 1standard deviation of the mean?
A 90%
B 85%
C 80%
D 75%
E 70%
如果是10+1or10-1的话,那这个题目答案应该是7/8 (87.5%)
按照prep给的答案,应该是认为9.4和10.5都不符合with 1 SD
大家认为那?
明天考试盼答案
1st std.所以the value is between (10-0.3) and (10+0.3)
59. Set S are all integers of multiple of 2, set T are all integers of multiple of 4, does the integer m have the property of in set S but not in set T?