Multiple Choice
A study of 20 students showed that the correlation between the time spent writing a test and the number of hours studied the night before the test was 0.35. Using a level of significance equal to 0.05, which of the following statements is true?
A) The sample correlation coefficient could be zero since the test statistic does not fall in the rejection region.
B) The null hypothesis that the population mean is equal to zero should not be rejected, and we should conclude that the true correlation coefficient is zero.
C) There is not enough statistical evidence to conclude that the true correlation coefficient is different from zero.
D) The null hypothesis that the population variance is equal to zero should be rejected, and we should conclude that the true correlation coefficient is zero.
E) None of these.
Correct Answer:
Verified
Correct Answer:
Verified
Q94: For the values of the coefficient of
Q95: Simple regression analysis is a statistical technique
Q96: Given the least squares regression line <img
Q97: A stochastic relationship is a relationship between
Q98: Given that the sum of squares for
Q100: A university admissions committee was interested in
Q101: The residuals are observations of the error
Q102: One way to measure the strength of
Q103: In simple linear regression, if the estimated
Q104: The prediction interval developed from a simple