The 5 summary statistics for the homework and final scores of 100 randomly selected students from a large Physics class of 2000 students are given in the table on the right. Avg SD Homework 78 8 r= 0.5 Final 65 15 a. Find the slope and y-intercept of the regression equation for predicting Finals from Homework. Round your final answers to 2 decimal places. Don't round in the intermediate steps. sure to enter y-intercept in the first blank and the slope in the second. Final = X Homework 提交答案| Tries 0/99 b. A 95% Confidence Interval for the population slope is closest to O(0.78 to 1.10) O(-0.94 to 2.81) O(0.31 to 0.63) O(0.62 to 1.26) 提交答案 Tries 0/99 c. To test the null hypothesis Ho: slopepop = 0 against the alternative HA: slopepop + 0 we'd compute a z statistic. Select the closest Z statistic. O0.05 O0.577 O5.77 O57.7

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
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Author:Bruce Crauder, Benny Evans, Alan Noell
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Chapter5: A Survey Of Other Common Functions
Section5.3: Modeling Data With Power Functions
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Question 2
The 5 summary statistics for the homework and final scores of 100 randomly selected students from a large Physics class of 2000 students are given in the table on the right.
Avg SD
Homework
78 8
r = 0.5
Final
65
15
a. Find the slope and y-intercept of the regression equation for predicting Finals from Homework. Round your final answers to 2 decimal places. Don't round in the intermediate steps. Be
sure to enter y-intercept in the first blank and the slope in the second.
Final =
X Homework
提交答案| Tries 0/99
b. A 95% Confidence Interval for the population slope is closest to
O(0.78 to 1.10)
O(-0.94 to 2.81)
O(0.31 to 0.63)
O(0.62 to 1.26)
提交答案
Tries 0/99
c. To test the null hypothesis Ho: slopepon = 0 against the alternative HA: slopepoD + 0 we'd compute a Z statistic. Select the closest Z statistic.
O0.05
O0.577
O5.77
O57.7
提交答案| Tries 0/99
d. If you square the Z stat, you get the Chi Square v statistic.
提交答案
Answer Submitted: Your final submission will be graded when the time limit is reached. Tries 1/99 LBIit
And if you square the t, you get the F
v statistic.
提交答案
Answer Submitted: Your final submission will be graded when the time limit is reached. Tries 1/99 UMAS
e. Suppose the p-value for the hypothesis test in part (c) based on the Z stat yielded a p-value = 6.93%, then the X2 stat would yield a p-valuev 6.93%.
提交答案| Tries 0/99
And the t-test would yield a p-value
v 6.93%.
坦本签安
Tries 0/00
Transcribed Image Text:Question 2 The 5 summary statistics for the homework and final scores of 100 randomly selected students from a large Physics class of 2000 students are given in the table on the right. Avg SD Homework 78 8 r = 0.5 Final 65 15 a. Find the slope and y-intercept of the regression equation for predicting Finals from Homework. Round your final answers to 2 decimal places. Don't round in the intermediate steps. Be sure to enter y-intercept in the first blank and the slope in the second. Final = X Homework 提交答案| Tries 0/99 b. A 95% Confidence Interval for the population slope is closest to O(0.78 to 1.10) O(-0.94 to 2.81) O(0.31 to 0.63) O(0.62 to 1.26) 提交答案 Tries 0/99 c. To test the null hypothesis Ho: slopepon = 0 against the alternative HA: slopepoD + 0 we'd compute a Z statistic. Select the closest Z statistic. O0.05 O0.577 O5.77 O57.7 提交答案| Tries 0/99 d. If you square the Z stat, you get the Chi Square v statistic. 提交答案 Answer Submitted: Your final submission will be graded when the time limit is reached. Tries 1/99 LBIit And if you square the t, you get the F v statistic. 提交答案 Answer Submitted: Your final submission will be graded when the time limit is reached. Tries 1/99 UMAS e. Suppose the p-value for the hypothesis test in part (c) based on the Z stat yielded a p-value = 6.93%, then the X2 stat would yield a p-valuev 6.93%. 提交答案| Tries 0/99 And the t-test would yield a p-value v 6.93%. 坦本签安 Tries 0/00
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