The manager's null and alternative hypotheses for 1 is:
A) H0 : 1 = 0 and H1 : 1 > 0.
B) H0 : 1 > 0 and H1 : 1 < 0.
C) H0 : 1 0 and H1 : 1 = 0.
D) H0 : 1 = 0 and H1 : 0 < 1 < 1.
Q. 2The number of degrees of freedom in a chi-square goodness-of-fit-test when population parameters are estimated is equal to the number of:
A) categories.
B) categories minus 1.
C) categories minus the number of parameters estimated.
D) categories minus the number of parameters estimated minus 1.
Q. 3If P(A B ) = 1, then A and B must be collectively exhaustive.
Indicate whether the statement is true or false
Q. 4Approximately what proportion of the observations is greater than 476?
What will be an ideal response?
Q. 5The data in the time-series plot below represents monthly sales for two years of beanbag animals at a local retail store (Month 1 represents January and Month 12 represents December). Do you see any obvious patterns in the data? Explain.
What will be an ideal response?
Q. 6What is the upper confidence limit of the 98 confidence interval for the difference between the population means?
A) 29.81
B) 327.95
C) 20.60
D) 28.32
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