Question

3.) Best predicted job performace rating, explain how you found the job performance rating.

4. Contruct a 98% confidence interval for the mean amount of juice in all such bottles.

Use the given data to find the best predicted value of the response variable. Points: 5 3) The regression equation relating attitude rating (x) and job performance rating (y) for the employees of a company is y = 11.7 +1.02x. Ten pairs of data were used to obtain the equation. The same data yield r = 0.523 and y = 80.1. What is the best predicted job performance rating for a person whose attitude rating is 72? Use 0.05 level of significance. Best predicted job performance rating Explain how you found the job performance rating. Show your work below. Use the given degree of confidence and sample data to construct a confidence interval for the population mean . Assume that the population has a normal distribution. Points: 5 4) The amounts (in ounces) of juice in eight randomly selected juice bottles are: 15.9 15.1 15.5 15.2 15.2 15.1 15.6 15.9 Construct a 98% confidence interval for the mean amount of juice in all such bottles. Show your work. non

Answer 1

(3 The least square regression line is y = 11.7+ 1.022 for x=72 Y 11.7 + 1.02 X 72 = 85.14 Ansuer= 85.14 V Based on data a giren Sample size sample mean n=8 x = 15.4375 g=0.3378 somple stoleler 98 % confidence intiwal for mean amount of juice (H) is [ π t taia, n-1 X 5/5 [ 15.4375 I 2.998 X 0.3378) Vo] [ 15.4375 1 0.3581 ( 15.0794 15.7956 ) 15.08 ounas L M L 15.80 ounces (15.08, 15.80 ) v