Find the probability that a given student spends between 12 and 15 minutes with the professor.
What will be an ideal response?
Q. 2The skewness of a distribution can never be negative.
Indicate whether the statement is true or false
Q. 3For the given data, which of the following is the result of the hypothesis test?
A) Since the test statistic equals 4.439 and the critical value equals 1.645, we reject the null hypothesis and assume there is a positive correlation between the variables.
B) Since the test statistic equals 4.113 and the critical value equals -1.645, we fail to reject the null hypothesis and assume there is no correlation between the variables.
C) Since the test statistic equals 3.305 and the critical value equals 2.447, we reject the null hypothesis and assume there is a correlation between the variables.
D) Since the test statistic equals 3.707 and the critical value equals 1.943, we reject the null hypothesis and assume there is a positive correlation between the variables.
Q. 4The sales forecast for the 2nd quarter of year 9 is approximately ________ in 000's.
A) 154 units
B) 164 units
C) 174 units
D) 184 units
Q. 5The Wilcoxon rank sum test is used to compare two populations when the samples are independent and the data are either ordinal or interval but not normally distributed.
Indicate whether the statement is true or false
Q. 6If all possible samples of size n are drawn from an infinite population with a mean of 20 and a standard deviation of 5, then the standard error of the sampling distribution of sample means is equal to 1.0 only for samples of size:
A) 5
B) 15
C) 20
D) 25
Q. 7Calculate the probability that a plane leaves on time.
What will be an ideal response?
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