A walk-in medical clinic believes that arrivals are uniformly distributed over weekdays (Monday through Friday). It has collected the following data based on a random sample of 100 days.
Frequency
Mon 25
Tue 22
Wed 19
Thu 18
Fri 16
Total 100
Based on this information how many degrees for freedom are involved in this goodness of fit test?
A) 99
B) 100
C) 4
D) 5
Q. 2To describe variable credit status that has three levels: Excellent, Good, and Poor, we need to use two different dummy variables.
Indicate whether the statement is true or false
Q. 3In a simple regression model, if the regression model is deemed to be statistically significant, it means that the regression slope coefficient is significantly greater than zero.
Indicate whether the statement is true or false
Q. 4Which of the following statements is true in the context of a chi-square goodness-of-fit test?
A) The degrees of freedom for determining the critical value will be the number of categories minus 1.
B) The critical value will come from the standard normal table if the sample size exceeds 30.
C) The null hypothesis will be rejected for a small value of the test statistic.
D) A very large test statistic will result in the null not being rejected.
Q. 5If a time series involves monthly data there will be a total of 12 seasonal indexes.
Indicate whether the statement is true or false
Q. 6If the correlation between the dependent variable and the independent variable is negative, the standard error of the regression slope coefficient in a simple linear regression model will also be negative.
Indicate whether the statement is true or false
Q. 7The degrees of freedom for the chi-square goodness-of-fit test are equal to ________, where k is the number of categories.
A) k + 1
B) k - 1
C) k + 2
D) k - 2
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