An estimate least-squares regression line has been determined to be y = 80 - 2.8
ID: 3221259 • Letter: A
Question
An estimate least-squares regression line has been determined to be y = 80 - 2.8 x_1 + 4.5 x_2 Find the predicted value of y when x_1 = 15 and x_2 = 30 A completely randomized anova test on 4 treatments, each with 12 observations, has concluded that the treatment means are not equal. If the 4-respective treatment means are 22.6, 24.3, 14.9, and 20.9, apply Fisher's LSD procedure to determine which treatments are not equal. Assume LSD has been calculated to be 7.1. It is conjectured that consumers have equal preference to 3 brands of orange juice. A sample of 90 local consumers resulted in the juice preferences shown below. Use the Chi-square goodness-of-fit test to determine if these data support the initial claim. Use critical value method and let alpha = 10%Explanation / Answer
3. Given equation,
y = 80 - 2.8 x1 + 4.5 x2
At x1 = 15 and x2 = 30,
y = 80 - 2.8(15) + 4.5(30)
y = 173
The predicted value of y is 173.