A regression model relating x, number of salespersons at a branch office, to y, annual sales at the office (in thousands of dollars) provided the following regression output. Where otal = 26. ANOVA df Significance MS F Regression 6.473.2 Residual Total 8,514.0 Coefficients Standard Error t Stat P-value Intercept 79.0 11.599 Number of 54.0 5.579 Salespersons a. Write the estimated regression equation (to whole number). = 79 + 54 x b. Compute the F statistic and test the significance of the relationship at a 0.05 level of significance. (to 2 decimals) F-value p-value is - Select your answer v, we - Select your answer - v Ho c. Compute the t statistic and test the significance of the relationship at a 0.05 level of significance. (to 2 decimals) t Stat p-value is- Select your answer - Select your answer - v Ho: B, = we d. Predict the annual sales at the Memphis branch office. This branch employs 13 salespersons. thousand (to whole number)

A hypothesis test uses a significance level of 5%. The Power of the Test is 0.90. Which of these statements are True? I. The Probability of incorrectly rejecting the Null is 0.05. II. The probability of incorrectly accepting the Null is 0.10. A. I only. B. II only. C. I. & II. D. None of them. А. А В. В С. С D. D

What is the correct interpretation of the significance level a in a hypothesis test? The probability that H, is true given that Ho is NOT rejected The probability that Ho is true given that Ho is rejected The probability of NOT rejecting Ho given that H, is true The probability of rejecting Ho given that Ho is true

State if you would retain or reject the null hypothesis 7. p>.05 8. p<.05 9. critical value = + and -1.96, test statistic = -1.98 10. critical value = + 1.65, test statistic = -1.90

A university has decided to introduce the use of plus and minus grading as long as there is evidence that 60% of the faculty is in support of this change. Write an appropriate null hypothesis and alternate hypothesis to test if the proportion is greater than 60%.

Describe type I and type Il errors for a hypothesis test of the indicated claim. A furniture store claims that no more than 60% of its new customers will return to buy their next piece of furniture. Describe the type error. Choose the correct answer below. A. A type error will occur when the actual proportion of new customers who return to buy their next piece of furniture is no more than 0 60 but you reject Ho p≤0.60. B Atype error will occur when the actual proportion of new customers who return to buy their next piece of furniture is at least 0 60, but you reject H, p=0.60 C. A type l error will occur when the actual proportion of new customers who return to buy their next piece of furniture is at least 0.60, but you fail to reject H, p=0.60 D Atype 1 error will occur when the actual pro ortion of new customers who return to buy their next piece of furniture is Clear all Check answer

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In 2011, a U.S. Census report determined that 56% of college students are working students. A researcher thinks this percentage has changed and surveys 162 college students. The researcher reports that 88 of the 162 are working students. Is there evidence to support the researcher's claim at the 1% significance level? Determine the null and alternative hypotheses.H0: p=H1: p ? > ≠ <   (Select the correct symbol and enter the value.)  Determine the test statistic. Round to two decimal places.z= Find the p-value. Round to four decimal places.p-value =  Are the results statistically significant? Fail to reject the null hypothesis. Reject the null hypothesis. Write the conclusion. There is not sufficient evidence to support the claim that the percentage of working college students has changed. There is sufficient evidence to support the claim that the percentage of working college students has changed.