Question 583175: Can you help me answer this question please, I've been having hard time with this math. thank YOu
1.One thousand test scores are approximately normally distributed with a mean of 60 and a standard deviation of 8.
A. what percentage of the scores are above 68
B. What percentage of the scored are above 76
C. What percentage of the scores are below 52
D. What percentage of the scores are between 52 and 76
2.On the first day of class last semester, a group of students was asked for the number of honors of sleep they obtained the previous night. the data were approximately normally distributed with a mean of 5.0 and a standard deviation of 0.5 Find
a. the percentage of students who slept more than 5.8 hours
b. the percentage of students who slept less then 4.8 hours
c. the percentage of students who slept between 4.8 and 5.8 hours
d. the percentage of students who slept more than 5.4 hours
e. the percentage of students who slept between 5.4 and 5.8 hours
3.Babe Ruth was one of the first inductees into the Baseball Hall of fame.He played in the major leagues from 1914-1935. the following is a list of the number of home runs he hit in each season:0, 4, 3, 2, 11, 29, 54, 59, 35, 41, 46, 25, 47, 60, 54, 46, 49, 46, 41, 34, 22, 6. For this set of data, find the following.
a. Mean D. midrange
b. median e. range
c. mode
4.Use the set of data
{18,20,22,24,26,26,28,36}
to find the following:
a. mean d. range
b. median e. midrange
c. mode f. standard deviation to the nearest ten
g.the scores at the first quartile
h.The score at the third quartile
5. Given the following set of 12 scores: {29,22,24,27,22,20,20,20,15,24,22,34}.
A. what is the rank from the top of the scores of 72?
b. what is the percentile is at the third quartile
c. what score is at the third quartile?
d. what is the median
e. what is the mode
Answer by solver91311(24713)   (Show Source):
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