Question

Since an instant replay system for tennis was introduced at a major tournament, men challenged

1389

referee calls, with the result that

428

of the calls were overturned. Women challenged

756

referee calls, and

212

of the calls were overturned. Use a

0.01

significance level to test the claim that men and women have equal success in challenging calls. Complete parts (a) through (c) below.

a. Test the claim using a hypothesis test.

Consider the first sample to be the sample of male tennis players who challenged referee calls and the second sample to be the sample of female tennis players who challenged referee calls. What are the null and alternative hypotheses for the hypothesis test?

A.

Upper H 0

:

p 1

equalsp 2

Upper H 1

:

p 1

greater thanp 2

B.

Upper H 0

:

p 1

not equalsp 2

Upper H 1

:

p 1

equalsp 2

C.

Upper H 0

:

p 1

equalsp 2

Upper H 1

:

p 1

not equalsp 2

D.

Upper H 0

:

p 1

less than or equalsp 2

Upper H 1

:

p 1

not equalsp 2

E.

Upper H 0

:

p 1

greater than or equalsp 2

Upper H 1

:

p 1

not equalsp 2

F.

Upper H 0

:

p 1

equalsp 2

Upper H 1

:

p 1

less thanp 2

Identify the test statistic.

zequals

nothing

(Round to two decimal places as needed.)

Identify the P-value.

P-valueequals

nothing

(Round to three decimal places as needed.)

What is the conclusion based on the hypothesis test?

The P-value is

▼

less than

greater than

the significance level of

alpha

equals0.01

,

so

▼

fail to reject

reject

the null hypothesis. There

▼

is not sufficient

is sufficient

evidence to warrant rejection of the claim that women and men have equal success in challenging calls.

b. Test the claim by constructing an appropriate confidence interval.

The

99

%

confidence interval is

nothing

less thanleft parenthesis p 1 minus p 2 right parenthesisless thannothing

.

(Round to three decimal places as needed.)

What is the conclusion based on the confidence interval?

Because the confidence interval limits

▼

do not include

include

0, there

▼

does

does not

appear to be a significant difference between the two proportions. There

▼

is sufficient

is not sufficient

evidence to warrant rejection of the claim that men and women have equal success in challenging calls.

c. Based on the results, does it appear that men and women may have equal success in challenging calls?

A.

The confidence interval suggests that there is a significant difference between the success of men and women in challenging calls. It is reasonable to speculate that women have more success.

B.

The confidence interval suggests that there is a significant difference between the success of men and women in challenging calls. It is reasonable to speculate that men have more success.

C.

The confidence interval suggests that there is no significant difference between the success of men and women in challenging calls.

D.

There is not enough information to reach a conclusion.

Click to select your answer(s).

Answer #1

Since an instant replay system for tennis was introduced at a
major? tournament, men challenged 1397 referee? calls, with the
result that 428 of the calls were overturned. Women challenged 775
referee? calls, and 228 of the calls were overturned. Use a 0.05
significance level to test the claim that men and women have equal
success in challenging calls. Complete parts? (a) through? (c)
below. a. Test the claim using a hypothesis test. Consider the
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Since an instant replay system for tennis was introduced at a
major tournament, men challenged 1416 referee calls, with the
result that 411 of the calls were overturned. Women challenged 746
referee calls, and 221 of the calls were overturned. Use a 0.01
significance level to test the claim that men and women have equal
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significance level to test the claim that men and women have equal
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Since an instant replay system for tennis was introduced at a
major tournament, men challenged 1382 referee calls, with the
result that 420 of the calls were overturned. Women challenged 766
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significance level to test the claim that men and women have equal
success in challenging calls. Complete parts (a) through (c)
below.
Identify the test statistic, construct confidence interval, and
find p value

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major tournament, men challenged 1430 referee calls, with the
result that 426 of the calls were overturned. Women challenged
761 referee calls, and 210 of the calls were overturned. Use a
0.01 significance level to test the claim that men and women have
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(1). Identify the test statistic. (2) P-Value

Since an instant replay system for tennis was introduced at a
major tournament, men challenged 1426 referee calls, with the
result that 431 of the calls were overturned. Women challenged 770
referee calls, and 227 of the calls were overturned. Use a 0.05
significance level to test the claim that men and women have equal
success in challenging calls. Complete parts (a) through (c)
below.
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Since an instant replay system for tennis was introduced at a
major tournament, men challenged 1425 referee calls, with the
result that 417 of the calls were overturned. Women challenged 762
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significance level to test the claim that men and women have equal
success in challenging calls. Complete parts (a) through (c)
below.
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- find p-value
- what is the conclusion based on the hypothesis...

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