Suppose the scores on a recent exam in your statistics class were as follows: 78, 96,...

Suppose the scores on a recent exam in your statistics class were as follows: 78, 96, 60, 93, 55, 84, 76, 92, 62, 83, 80, 90, 64, 75, 79, 31, 75, 64, 99, 74, 88, 61, 82, 68, 79, 78, 80, 85. a) Create a stemplot for these test scores using each 10s value once on the stem and ordered leaves on each branch.

Refer to the test scores in the Question above
a) Create a histogram for the test scores. b) Explain how you decided how many intervals to use for the histogram in part (a). c) Comment on the shape of the histogram in part (a).

Expert Solution

orchestra answered 1 year ago

Suppose the scores on a recent paper in your statistics class were as follows: 66, 66,...

Suppose the scores on a recent paper in your statistics class were as follows: 66, 66, 86, 75, 57, 70, 77, 73, 76, 96, 87, 60, 98, 76, 83, 94, 88, 59, 90, 77, 76, 31, 58, 75, 92, 80, 82, 80 (a) Create a five-number summary. Lowest Value: Lowest quartile: Median: Highest quartile: Highest value:

The final exam scores in a statistics class were normally distributed with a mean of 70...

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A) Suppose that the mean and standard deviation of the scores on a statistics exam are...

A) Suppose that the mean and standard deviation of the scores on a statistics exam are 89.2 and 6.49, respectively, and are approximately normally distributed. Calculate the proportion of scores below 77. 1) 0.0301 2) 0.9699 3) We do not have enough information to calculate the value. 4) 0.2146 5) 0.7854 B) When students use the bus from their dorms, they have an average commute time of 8.974 minutes with standard deviation 3.1959 minutes. Approximately 66.9% of students reported a...

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he final exam grade of a statistics class has a skewed distribution with mean of 78...

he final exam grade of a statistics class has a skewed distribution with mean of 78 and standard deviation of 7.8. If a random sample of 30 students selected from this class, then what is the probability that average final exam grade of this sample is between 75 and 80?

You were told that the mean score on a statistics exam is 75 with the scores...

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PART I Suppose that the mean and standard deviation of the scores on a statistics exam...

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Suppose a professor gives an exam to a class of 40 students and the scores are...

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