In a multiple regression with two independent variables X1 and X2, the multiple standard error of the estimate measures the variation of the dependent variable Y about a predicted regression plane.
Indicate whether the statement is true or false
Q. 2In a recent survey of high school students, it was found that the average amount of money spent on entertainment each week was normally distributed with a mean of 52.30 and a standard deviation of 18.23.
Assuming these values are representative of all high school students, what is the probability that for a sample of 25, the average amount spent by each student exceeds 60?A) 0.3372
B) 0.0174
C) 0.1628
D) 0.4826
Q. 3Compute the sales forecast for the 1st quarter of year 4.
A) approximately 113 units
B) approximately 269 units
C) approximately 164 units
D) approximately 369 units
Q. 4Express the event A B in words
What will be an ideal response?
Q. 5If the measure of skewness for a particular data set is positive then the data is skewed to the right.
Indicate whether the statement is true or false
Q. 6Calculate the width of the interval for a 95 confidence interval.
What will be an ideal response?
Q. 7What is the probability that a randomly-selected light bulb burns out in less than 1,500 hours?
What will be an ideal response?
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