ABCOF 10. A to test her expectations for distributions with the She "igures that final grades in the English department should be distributed as: F, 5% D, 20% A, 35% B, 25% C, 15% recorded in the table below. The teacher completed the calculations for the expected values and R2 of the A and B students. At the end of a randomly selected semester, the following grades for 240 students were Grade Frequency Expected Value 84 0.19 08 62 0.07 09 40 D. 12 ldeic Complete the last 3 rows of the table by calculating the expected values and R2for the C, D, and F students. Use the table values to find the chi-square test statistic y2 used to determine if the grade distribution for the department is different than expected. A. x? = 0.26 B. x² = 0.78 C. x² = 0.97 D. x2 = 0.19 E. x2 = 0.70 nolniet Pas

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ABCOF
10. A to test her expectations for distributions with the She
"igures that final grades in the English department should be distributed as:
F, 5%
D, 20%
A, 35%
B, 25%
C, 15%
recorded in the table below. The teacher completed the calculations for the expected values
and R2 of the A and B students.
At the end of a randomly selected semester, the following grades for 240 students were
Grade
Frequency
Expected Value
84
0.19
08
62
0.07
09
40
D.
12
ldeic
Complete the last 3 rows of the table by calculating the expected values and R2for the C, D, and
F students.
Use the table values to find the chi-square test statistic y2 used to determine if the grade
distribution for the department is different than expected.
A. x? = 0.26
B. x² = 0.78
C. x² = 0.97
D. x2 = 0.19
E. x2 = 0.70
nolniet
Pas
Transcribed Image Text:ABCOF 10. A to test her expectations for distributions with the She "igures that final grades in the English department should be distributed as: F, 5% D, 20% A, 35% B, 25% C, 15% recorded in the table below. The teacher completed the calculations for the expected values and R2 of the A and B students. At the end of a randomly selected semester, the following grades for 240 students were Grade Frequency Expected Value 84 0.19 08 62 0.07 09 40 D. 12 ldeic Complete the last 3 rows of the table by calculating the expected values and R2for the C, D, and F students. Use the table values to find the chi-square test statistic y2 used to determine if the grade distribution for the department is different than expected. A. x? = 0.26 B. x² = 0.78 C. x² = 0.97 D. x2 = 0.19 E. x2 = 0.70 nolniet Pas
Expert Solution
Introduction

Whether there is any relationship or association between categorical variables are calculated using the chi square test. It is calculated by taking squared difference between the observed and expected value then divide it by expected value. It is denoted as χ2. The formula for chi square is defined as

χ2=O-E2O

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