Are phone calls equally likely to occur any day of the week? The day of the week for each of 616 randomly selected phone calls was observed. The results are displayed in the table below. Use an α = 0.10 significance level. Part A and Check Part C. a. Complete the rest of the table by filling in the expected frequencies:Frequencies of Phone Calls for Each Day of theWeekOutcome Frequency Expected FrequencySunday92Monday105Tuesday95Wednesday 85Thursday 78Friday99Saturday 62b. What is the correct statistical test to use?Goodness-of-Fitc. What are the null and alternative hypotheses?Но:The distribution of phone calls is uniform over the days of the week.Phone calls and days of the week are dependent.The distribution of phone calls is not uniform over the days of the week.Phone calls and days of the week are independent.H1:Phone calls and days of the week are dependent.Phone calls and days of the week are independent.O The distribution of phone calls is not uniform over the days of the week.O O

Here, each day of the week has probability 1/7 because the total number of days in a week is 7.

Answered: a. Complete the rest of the table by…

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 616 randomly selected phone calls was observed. The results are displayed in the table below. Use an α = 0.10 significance level.

Part A and Check Part C.

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
92
Monday
105
Tuesday
95
Wednesday 85
Thursday 78
Friday
99
Saturday 62
b. What is the correct statistical test to use?
Goodness-of-Fit
c. What are the null and alternative hypotheses?
Но:
The distribution of phone calls is uniform over the days of the week.
Phone calls and days of the week are dependent.
The distribution of phone calls is not uniform over the days of the week.
Phone calls and days of the week are independent.
H1:
Phone calls and days of the week are dependent.
Phone calls and days of the week are independent.
O The distribution of phone calls is not uniform over the days of the week.
O O

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