Are phone calls equally likely to occur any day of the week? The day of the week for each of 385 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 59 Monday 50 Tuesday 43 Wednesday 60 Thursday 79 Friday 58 Saturday 36 b. What is the correct statistical test to use? Goodness-of-Fit ✓ c. What are the null and alternative hypotheses? Ho: O The distribution of phone calls is not uniform over the days of the week. Phone calls and days of the week are independent. O The distribution of phone calls is uniform over the days of the week. OD
Are phone calls equally likely to occur any day of the week? The day of the week for each of 385 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 59 Monday 50 Tuesday 43 Wednesday 60 Thursday 79 Friday 58 Saturday 36 b. What is the correct statistical test to use? Goodness-of-Fit ✓ c. What are the null and alternative hypotheses? Ho: O The distribution of phone calls is not uniform over the days of the week. Phone calls and days of the week are independent. O The distribution of phone calls is uniform over the days of the week. OD
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 4BGP
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VIEWStep 2: Calculate expected frequency
VIEWStep 3: Determine the statistical test
VIEWStep 4: Determine hypotheses
VIEWStep 5: Calculate the degrees of freedom
VIEWStep 6: Calculate test statistic
VIEWStep 7: Calculate p-value
VIEWStep 8: Determine decision
VIEWStep 9: Determine conclusion
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