Question
In: Math
The grades of a group of 1000 students in an exam are normally distributed with a...
The grades of a group of 1000 students in an exam are normally distributed with a mean of 70 and a standard deviation of 10. A student is randomly selected from the group. Find the probability that;
a. Their grade is greater than 80
b. Their grade is less than 50
c. That their grade is between 50 and 80
d. Approximately, how many students have grade greater than 80% and how many have less than 50%
Solutions
milcah answered 1 year agoRelated Solutions
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(a) What percent of students scored above an 88 ?Round your
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The heights of 1000 students are approximately normally
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are drawn from this population and the means recorded to the
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(a) the mean and standard deviation of the sampling distribution
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(b) the number of sample means that fall between 171 and 177 cm
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Let X be a random variable following a continuous uniform
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The heights of 1000 students are normally distributed with a mean of 177.5 centimeters and a...
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CI = to
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