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Are phone calls equally likely to occur any day of the week? The day of the week for each of 623 randomly selected phone calls was observed. The results are displayed in the table below. Use an a = 0.01 significance level. a. Complete the rest of the table by filling in the expected frequencies: Frequencies of Phone Calls for Each Day of the Week Outcome Frequency Expected Frequency Sunday 100 Monday 57 Tuesday 77 Wednesday 93 Thursday 103 Friday 98 Saturday 95 b. What is the correct statistical test to use? Select an answer ✓ c. What are the null and alternative hypotheses? Ho: Phone calls and days of the week are dependent. Phone calls and days of the week are independent. The distribution of phone calls is uniform over the days of the week. O The distribution of phone calls is not uniform over the days of the week.

Are phone calls equally likely to occur any day of the week? The day of the week for each of 623 randomly selected phone calls was observed. The results are displayed in the table below. Use an a = 0.01 significance level. a. Complete the rest of the table by filling in the expected frequencies: Frequencies of Phone Calls for Each Day of the Week Outcome Frequency Expected Frequency Sunday 100 Monday 57 Tuesday 77 Wednesday 93 Thursday 103 Friday 98 Saturday 95 b. What is the correct statistical test to use? Select an answer ✓ c. What are the null and alternative hypotheses? Ho: Phone calls and days of the week are dependent. Phone calls and days of the week are independent. The distribution of phone calls is uniform over the days of the week. O The distribution of phone calls is not uniform over the days of the week.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Are phone calls equally likely to occur any day of the week? The day of the week for each of 623 randomly selected phone calls was observed. The results are displayed in the table below. Use an a = 0.01 significance level. a. Complete the rest of the table by filling in the expected frequencies: Frequencies of Phone Calls for Each Day of the Week Outcome Frequency Expected Frequency Sunday 100 Monday 57 Tuesday 77 Wednesday 93 Thursday 103 Friday 98 Saturday 95 b. What is the correct statistical test to use? Select an answer ✓ c. What are the null and alternative hypotheses? Ho: Phone calls and days of the week are dependent. Phone calls and days of the week are independent. The distribution of phone calls is uniform over the days of the week. O The distribution of phone calls is not uniform over the days of the week.
Transcribed Image Text:Are phone calls equally likely to occur any day of the week? The day of the week for each of 623 randomly selected phone calls was observed. The results are displayed in the table below. Use an a = 0.01 significance level. a. Complete the rest of the table by filling in the expected frequencies: Frequencies of Phone Calls for Each Day of the Week Outcome Frequency Expected Frequency Sunday 100 Monday 57 Tuesday 77 Wednesday 93 Thursday 103 Friday 98 Saturday 95 b. What is the correct statistical test to use? Select an answer ✓ c. What are the null and alternative hypotheses? Ho: Phone calls and days of the week are dependent. Phone calls and days of the week are independent. The distribution of phone calls is uniform over the days of the week. O The distribution of phone calls is not uniform over the days of the week.
H₁: Phone calls and days of the week are dependent. Phone calls and days of the week are independent. The distribution of phone calls is not uniform over the days of the week. The distribution of phone calls is uniform over the days of the week. d. The degrees of freedom = e. The test-statistic for this data : = f. The p-value for this sample: = (Please show your answer to four decimal places.) g. The p-value is Select an answer h. Based on this, we should Select an answer i. Thus, the final conclusion is... (Please show your answer to three decimal places.) α There is insufficient evidence to conclude that the distribution of phone calls is not uniform over the days of the week. There is insufficient evidence to conclude that phone calls and days of the week are dependent. There is sufficient evidence to conclude that the distribution of phone calls is uniform over the days of the week. There is sufficient evidence to conclude that phone calls and days of the week are dependent. There is sufficient evidence to conclude that the distribution of phone calls is not uniform over the days of the week.
Transcribed Image Text:H₁: Phone calls and days of the week are dependent. Phone calls and days of the week are independent. The distribution of phone calls is not uniform over the days of the week. The distribution of phone calls is uniform over the days of the week. d. The degrees of freedom = e. The test-statistic for this data : = f. The p-value for this sample: = (Please show your answer to four decimal places.) g. The p-value is Select an answer h. Based on this, we should Select an answer i. Thus, the final conclusion is... (Please show your answer to three decimal places.) α There is insufficient evidence to conclude that the distribution of phone calls is not uniform over the days of the week. There is insufficient evidence to conclude that phone calls and days of the week are dependent. There is sufficient evidence to conclude that the distribution of phone calls is uniform over the days of the week. There is sufficient evidence to conclude that phone calls and days of the week are dependent. There is sufficient evidence to conclude that the distribution of phone calls is not uniform over the days of the week.
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