O Phone calls and days of the week are dependent. O Phone calls and days of the week are independent. O The distribution of phone calls is uniform over the days of the O The distribution of phone calls is not uniform over the days of d. The degrees of freedom %3D

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nts X
O (135) X
S Hints X
9 Hints X
D (135) x O (135) X
O (135) X
D (135) X
D (135) X
showtest.php?action=skip&to=10&reattempt=D10
*引(G
H1:
O Phone calls and days of the week are dependent.
O Phone calls and days of the week are independent.
O 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.
d. The degrees of freedom =
e. The test-statistic for this data =
(Please show your answer to three decimal places.)
f. The p-value for this sample :
(Please show your answer to four decimal places.)
a
g. The p-value is Select an answer
h. Based on this, we should Select an answer
i. Thus, the final conclusion is...
O There is sufficient evidence to conclude that the distribution of phone calls is uniform over the days
DD
F11
000
000
F10
F8
F9
F6
F7
F4
F5
Transcribed Image Text:nts X O (135) X S Hints X 9 Hints X D (135) x O (135) X O (135) X D (135) X D (135) X showtest.php?action=skip&to=10&reattempt=D10 *引(G H1: O Phone calls and days of the week are dependent. O Phone calls and days of the week are independent. O 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. d. The degrees of freedom = e. The test-statistic for this data = (Please show your answer to three decimal places.) f. The p-value for this sample : (Please show your answer to four decimal places.) a g. The p-value is Select an answer h. Based on this, we should Select an answer i. Thus, the final conclusion is... O There is sufficient evidence to conclude that the distribution of phone calls is uniform over the days DD F11 000 000 F10 F8 F9 F6 F7 F4 F5
B Hints x
D (135) X
O Hints x
O Hints x
D (135) x
(135) x
D (135)
D (135) X
D (135) X
ent/showtest.php?action=skip&to=10&reattempt3D10
* ES
Are phone calls equally likely to occur any day of the week? The day of the week for each of 399 randomly
selected phone calls was observed. The results are displayed in the table below. Use an a = 0.10 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
56
Monday
52
Tuesday
63
Wednesday 46
Thursday
71
Friday
62
Saturday
49
b. What is the correct statistical test to use?
Select an answer v
c. What are the null and alternative hypotheses?
Но:
O The distribution of phone calls is not uniform over the days of the week.
O The distribution of phone calls is uniform over the days of the week.
O Phone calls and days of the week are independent.
O Phone calls and days of the week are dependent.
Transcribed Image Text:B Hints x D (135) X O Hints x O Hints x D (135) x (135) x D (135) D (135) X D (135) X ent/showtest.php?action=skip&to=10&reattempt3D10 * ES Are phone calls equally likely to occur any day of the week? The day of the week for each of 399 randomly selected phone calls was observed. The results are displayed in the table below. Use an a = 0.10 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 56 Monday 52 Tuesday 63 Wednesday 46 Thursday 71 Friday 62 Saturday 49 b. What is the correct statistical test to use? Select an answer v c. What are the null and alternative hypotheses? Но: O The distribution of phone calls is not uniform over the days of the week. O The distribution of phone calls is uniform over the days of the week. O Phone calls and days of the week are independent. O Phone calls and days of the week are dependent.
Expert Solution
Working

a)

Freuency (O) Expected E (O-E)^2 (O-E)^2/E
56 57 1 0.017544
52 57 25 0.438596
63 57 36 0.631579
46 57 121 2.122807
71 57 196 3.438596
62 57 25 0.438596
49 57 64 1.122807
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