A popular theory is that presidential candidates have an advantage if they are taller than their main opponents. Listed are heights (in centimeters) of randomly selected presidents along with the heights of their main opponents. Complete parts (a) and (b) below. Height (cm) of President Height (cm) of Main Opponent 169 178 180 168 193 174 181 179 179 192 192 169 D a. Use the sample data with a 0.05 significance level to test the claim that for the population of heights for presidents and their main opponents, the differences have a mean greater than 0 cm. In this example, Ha is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the president's height minus their mai opponent's height. What are the null and alternative hypotheses for the hypothesis test? Ho: Ha cm cm (Type integers or decimals. Do not round.) Identify the test statistic. t3= (Round to two decimal places as needed.) Identify the P-value. P-value = (Round to three decimal places as needed.)

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popular theory is that presidential candidates have an advantage if they are taller than their main opponents. Listed are heights (in centimeters) of randomly selected presidents
along with the heights of their main opponents. Complete parts (a) and (b) below.
Height (cm) of President
181
179
179
192 192 169 O
Height (cm) of Main Opponent 169
178 180 168
193
174
a. Use the sample data with a 0.05 significance level to test the claim that for the population of heights for presidents and their main opponents, the differences have a mean greater
than 0 cm.
In this example, µa is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the president's height minus their main
opponent's height. What are the null and alternative hypotheses for the hypothesis test?
Ho: Hd
cm
cm
(Type integers or decimals. Do not round.)
Identify the test statistic.
t=
(Round to two decimal places as needed.)
Identify the P-value.
P-value =
(Round to three decimal places as needed.)
What is the conclusion based on the hypothesis test?
Since the P-value is
the significance level,
the null hypothesis. There
sufficient evidence to support the claim that presidents tend to be
taller than their opponents.
b. Construct the confidence interval that could be used for the hvpothesis test described in part (a). What feature of the confidence interval leads to the same conclusion reached in
Transcribed Image Text:popular theory is that presidential candidates have an advantage if they are taller than their main opponents. Listed are heights (in centimeters) of randomly selected presidents along with the heights of their main opponents. Complete parts (a) and (b) below. Height (cm) of President 181 179 179 192 192 169 O Height (cm) of Main Opponent 169 178 180 168 193 174 a. Use the sample data with a 0.05 significance level to test the claim that for the population of heights for presidents and their main opponents, the differences have a mean greater than 0 cm. In this example, µa is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the president's height minus their main opponent's height. What are the null and alternative hypotheses for the hypothesis test? Ho: Hd cm cm (Type integers or decimals. Do not round.) Identify the test statistic. t= (Round to two decimal places as needed.) Identify the P-value. P-value = (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? Since the P-value is the significance level, the null hypothesis. There sufficient evidence to support the claim that presidents tend to be taller than their opponents. b. Construct the confidence interval that could be used for the hvpothesis test described in part (a). What feature of the confidence interval leads to the same conclusion reached in
b. Construct the confidence interval that could be used for the hypothesis test described in part (a). What feature of the confidence interval leads to the same conclusion reached in
part (a)?
The confidence interval is
cm < Hd
cm.
(Round to one decimal place as needed.)
What feature of the confidence interval leads to the same conclusion reached in part (a)?
Since the confidence interval contains
the null hypothesis.
Transcribed Image Text:b. Construct the confidence interval that could be used for the hypothesis test described in part (a). What feature of the confidence interval leads to the same conclusion reached in part (a)? The confidence interval is cm < Hd cm. (Round to one decimal place as needed.) What feature of the confidence interval leads to the same conclusion reached in part (a)? Since the confidence interval contains the null hypothesis.
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