Find the 98 confidence interval for the difference in the means of the two populations.
A) 1002 12.58
B) 38 12.58
C) 38 19.86
D) 1002 19.86
Q. 2A chi-square goodness-of-fit-test is to be used to determine if data fit a Poisson distribution. The data is divided into k categories. The mean number of occurrences is unknown and must be estimated. The degrees of freedom for this test would
A) k - 1
B) k - 2
C) k - 3
D) k - 4
Q. 3What is the seasonal index for quarter 3?
A) 66.02
B) 64.92
C) 141.99
D) 359.08
Q. 4The mean and variance of any normal distribution are always zero and one, respectively.
Indicate whether the statement is true or false
Q. 5What is the probability that the man does work?
What will be an ideal response?
Q. 6Find the margin of error for a 98 confidence interval for the difference in the means of the two populations.
A) 8.50
B) 19.86
C) 15.77
D) 12.58
Q. 7Which statistical technique is appropriate when we wish to analyze the relationship between two qualitative variables with two or more categories?
A) The chi-square test of a multinomial experiment
B) The chi-square test of a contingency table
C) The t-test of the difference between two means
D) The z test of the difference between two proportions
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