The grade-point average in an econometrics examination was normally distributed with a mean of 75. In a sample of 10 percent of students it was found that the grade-point average was greater than 80. Can you tell what the s.d. of the grade-point average was?
1 answer:
To solve a standard deviation we require a specific result for each data. So this question(data from question) can not be enough to solve standard deviation.
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Answer:
35%
Step-by-step explanation:
Its 7/20 so 0.35 and then times 100
Answer:
39.2 is the mean
the deviation is 15.2
Step-by-step explanation:
the mean of a set of numbers is the sum divided by the number of terms = 39.2
the deviation measures the spread of a data distribution of the sample = 15.2
Answer:
84 miles
Step-by-step explanation:
35% as a decimal is .35.
240*.35=84
Answer:
-16
Step-by-step explanation:
12/35 is simplified, as you cannot divide it into smaller numbers by a common factor.
