Residual values in a regression model can be positive or negative.
Indicate whether the statement is true or false
Q. 2Dr. Jordan operates a dental practice with 315 patients and she would like to estimate the proportion of her patients that have dental insurance from their employers. A random sample of 110 patients found that 40 had insurance coverage.
The 95 confidence interval to estimate the proportion of patients with dental insurance is ________.A) (0.227, 0.501 )
B) (0.291, 0.437 )
C) (0.327, 0.401 )
D) (0.346, 0.383 )
Q. 3The null hypothesis for a chi-square test of independence always states that the two variables are not independent of one another.
Indicate whether the statement is true or false
Q. 4A statistics professor has 115 students in a statistics class and would like to estimate the number of hours each student studied for the last exam.
A random sample of 24 students was found to study an average of 6.8 hours with a standard deviation of 2.2 hours. The 90 confidence interval to estimate the average number of hours studying for the exam is ________.
A) (6.69, 6.91)
B) (5.86, 8.74)
C) (6.11, 7.49)
D) (5.79, 7.81)
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