More than one teacher has given the following advice: choose answer C when blindly guessing among four answers in a multiple choice test, since C is more often the correct answer than either A, B, or D. Suppose that we take a random sample of 520 correct answers from multiple-choice tests for introductory college courses and obtain the information summarized by the first row of numbers in the table below. These numbers are the observed frequencies for the categories A, B, C, and D for our sample of 520 correct answers. The second row of numbers contains the frequencies expected for a sample of 520 correct answers if a correct answer is equally likely to be A, B, C, or D. The bottom row of numbers contains the following value for each of the correct answer categories A, B, C, and D. (10-12) JE Part 1 Fill in the missing values in the table. Round your responses for the expected frequencies to two or more decimal places. Round your to three or more decimal places. Send data to Excel Observed frequency fo Expected frequency JE (Observed frequency - Expected frequency)² Expected frequency (10-12)² JE B с D 132 146 115 127 0 130.00 0 130.00 0 1.969 0 0.069 (a) Determine the type of test statistic to use. Type of test statistic: (Choose one) Total 520 X Part 2 Answer the following to summarize the test of the hypothesis that each of A, B, C, and D is equally likely to be the correct answer on tests in these introductory college courses. Use the 0.10 level of significance for the test. (b) Find the value of the test statistic. (Round your answer to two or more decimal places.) 0 (c) Find the p-value. (Round your answer to three or more decimal places.) 0 (d) Can we reject the hypothesis that A, B, C, and D are equally likely to be the correct answer on tests in these introductory college courses? O Yes O No (Jo-12)² JE X responses
More than one teacher has given the following advice: choose answer C when blindly guessing among four answers in a multiple choice test, since C is more often the correct answer than either A, B, or D. Suppose that we take a random sample of 520 correct answers from multiple-choice tests for introductory college courses and obtain the information summarized by the first row of numbers in the table below. These numbers are the observed frequencies for the categories A, B, C, and D for our sample of 520 correct answers. The second row of numbers contains the frequencies expected for a sample of 520 correct answers if a correct answer is equally likely to be A, B, C, or D. The bottom row of numbers contains the following value for each of the correct answer categories A, B, C, and D. (10-12) JE Part 1 Fill in the missing values in the table. Round your responses for the expected frequencies to two or more decimal places. Round your to three or more decimal places. Send data to Excel Observed frequency fo Expected frequency JE (Observed frequency - Expected frequency)² Expected frequency (10-12)² JE B с D 132 146 115 127 0 130.00 0 130.00 0 1.969 0 0.069 (a) Determine the type of test statistic to use. Type of test statistic: (Choose one) Total 520 X Part 2 Answer the following to summarize the test of the hypothesis that each of A, B, C, and D is equally likely to be the correct answer on tests in these introductory college courses. Use the 0.10 level of significance for the test. (b) Find the value of the test statistic. (Round your answer to two or more decimal places.) 0 (c) Find the p-value. (Round your answer to three or more decimal places.) 0 (d) Can we reject the hypothesis that A, B, C, and D are equally likely to be the correct answer on tests in these introductory college courses? O Yes O No (Jo-12)² JE X responses
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
choose c blindly
Transcribed Image Text:More than one teacher has given the following advice: choose answer C when blindly guessing among four answers in a multiple choice test, since C is more
often the correct answer than either A, B, or D.
Suppose that we take a random sample of 520 correct answers from multiple-choice tests for introductory college courses and obtain the information
summarized by the first row of numbers in the table below. These numbers are the observed frequencies for the categories A, B, C, and D for our sample of 520
correct answers. The second row of numbers contains the frequencies expected for a sample of 520 correct answers if a correct answer is equally likely to be
A, B, C, or D. The bottom row of numbers contains the following value for each of the correct answer categories A, B, C, and D.
2
(fo-f) (Observed frequency - Expected frequency) 2
JE
Expected frequency
Part 1
Fill in the missing values in the table. Round your responses for the expected frequencies to two or more decimal places. Round your
to three or more decimal places.
Send data to Excel
Observed
frequency
fo
Expected
frequency
JE
(Jo-12²
JE
132 146
130.00
1.969
C
D
115 127 520
130.00
0.069
Total
Determine the type of test statistic to use.
Type of test statistic: (Choose one) ▼
X
5
Part 2
Answer the following to summarize the test of the hypothesis that each of A, B, C, and D is equally likely to be the correct answer on tests in these
introductory college courses. Use the 0.10 level of significance for the test.
(b) Find the value of the test statistic. (Round your answer to two or more decimal places.)
0
(c) Find the p-value. (Round your answer to three or more decimal places.)
0
(d) Can we reject the hypothesis that A, B, C, and D are equally likely to be the correct answer on
tests in these introductory college courses?
O Yes O No
(fo-1E)²
JE
X
responses
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