Computing third quartile of the exam scores

Reference no: EM1321406

Q1) Consider follow data on moviegoer spending on snacks:

Age (X)	Dollars Spent (Y)
30	8.50
50	10.00
24	3.00
12	5.25
33	20.75
18	6.00

Compute b₀, intercept of an OLS regression line using dollars spent as dependent variable (Y) and age as independent variable (X).

Q2) Consider following data on exam scores of 10 randomly selected students:

92, 72, 78, 66, 81, 75, 51, 94, 83, 69

Compute 3rd quartile of the exam scores.

Q3) Consider following data on exam scores of 10 randomly selected students:

92, 72, 78, 66, 81, 75, 51, 94, 83, 69

Suppose these data are from normal distribution, what percentage of students will score within 1 standard deviation of mean (either above or below)?

Reference no: EM1321406

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