According to previous studies, the mean distance each visitor in Greenspan National Park hikes during their visit is 30 kilometers. The park recently closed its shuttle system, which used to transport hikers to many of the park's most popular hiking trails. Because of this, an administrator at the park suspects the mean distance, μ, is now less than 30 kilometers. The administrator chooses a random sample of 46 visitors. The mean distance hiked for the sample is 27.6 kilometers. Assume the population standard deviation is 9.9 kilometers. Can the administrator conclude that the mean distance hiked by each visitor is now less than 30 kilometers? Perform a hypothesis test, using the 0.10 level of significance. (a) State the null hypothesis Ho and the alternative hypothesis H₁. Ho: O H₁: 0 (b) Perform a Z-test and find the p-value. 3. μ 0<0 OSO 020 X X 0=0 O

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• The p-value is the area under the curve to the left of the value of the test statistic.
Standard Normal Distribution
Step 1: Select one-tailed or two-tailed.
O One-tailed
O Two-tailed
Step 2: Enter the test statistic.
(Round to 3 decimal places.)
Step 3: Shade the area represented by
the p-value.
Step 4: Enter the p-value.
(Round to 3 decimal places.)
0.4
0.3-
0.2+
0.1-
X
S
(c) Based on your answer to part (b), choose what the administrator can conclude, at the 0.10 level of significance.
O Since the p-value is less than (or equal to) the level of significance, the null hypothesis is rejected. So, there is enough
evidence to conclude that the mean distance hiked by each visitor is now less than 30 kilometers.
O Since the p-value is less than (or equal to) the level of significance, the null hypothesis is not rejected. So, there is not
enough evidence to conclude that the mean distance hiked by each visitor is now less than 30 kilometers.
O Since the p-value is greater than the level of significance, the null hypothesis is rejected. So, there is enough evidence
to conclude that the mean distance hiked by each visitor is now less than 30 kilometers.
O Since the p-value is greater than the level of significance, the null hypothesis is not rejected. So, there is not enough
evidence to conclude that the mean distance hiked by each visitor is now less than 30 kilometers.
X
Ś
Transcribed Image Text:Vn • The p-value is the area under the curve to the left of the value of the test statistic. Standard Normal Distribution Step 1: Select one-tailed or two-tailed. O One-tailed O Two-tailed Step 2: Enter the test statistic. (Round to 3 decimal places.) Step 3: Shade the area represented by the p-value. Step 4: Enter the p-value. (Round to 3 decimal places.) 0.4 0.3- 0.2+ 0.1- X S (c) Based on your answer to part (b), choose what the administrator can conclude, at the 0.10 level of significance. O Since the p-value is less than (or equal to) the level of significance, the null hypothesis is rejected. So, there is enough evidence to conclude that the mean distance hiked by each visitor is now less than 30 kilometers. O Since the p-value is less than (or equal to) the level of significance, the null hypothesis is not rejected. So, there is not enough evidence to conclude that the mean distance hiked by each visitor is now less than 30 kilometers. O Since the p-value is greater than the level of significance, the null hypothesis is rejected. So, there is enough evidence to conclude that the mean distance hiked by each visitor is now less than 30 kilometers. O Since the p-value is greater than the level of significance, the null hypothesis is not rejected. So, there is not enough evidence to conclude that the mean distance hiked by each visitor is now less than 30 kilometers. X Ś
According to previous studies, the mean distance each visitor in Greenspan National Park hikes during their visit is 30 kilometers. The park recently closed its
shuttle system, which used to transport hikers to many of the park's most popular hiking trails. Because of this, an administrator at the park suspects the mean
distance, u, is now less than 30 kilometers. The administrator chooses a random sample of 46 visitors. The mean distance hiked for the sample is 27.6
kilometers. Assume the population standard deviation is 9.9 kilometers.
Can the administrator conclude that the mean distance hiked by each visitor is now less than 30 kilometers? Perform a hypothesis test, using the 0.10 level of
significance.
(a) State the null hypothesis Ho and the alternative hypothesis H₁.
Ho: O
H₁:0
(b) Perform a Z-test and find the p-value.
Here is some information to help you with your Z-test.
. The value of the test statistic is given by
Standard Normal Distribution
Step 1: Select one-tailed or two-tailed.
O One-tailed
O Two-tailed
Н
Step 2: Enter the test statistic.
(Round to 3 decimal places.)
0<0
020
X
X
OSO
0=0
x-μ
O
√n
• The p-value is the area under the curve to the left of the value of the test statistic.
O>O
0.3-
S
#0
Transcribed Image Text:According to previous studies, the mean distance each visitor in Greenspan National Park hikes during their visit is 30 kilometers. The park recently closed its shuttle system, which used to transport hikers to many of the park's most popular hiking trails. Because of this, an administrator at the park suspects the mean distance, u, is now less than 30 kilometers. The administrator chooses a random sample of 46 visitors. The mean distance hiked for the sample is 27.6 kilometers. Assume the population standard deviation is 9.9 kilometers. Can the administrator conclude that the mean distance hiked by each visitor is now less than 30 kilometers? Perform a hypothesis test, using the 0.10 level of significance. (a) State the null hypothesis Ho and the alternative hypothesis H₁. Ho: O H₁:0 (b) Perform a Z-test and find the p-value. Here is some information to help you with your Z-test. . The value of the test statistic is given by Standard Normal Distribution Step 1: Select one-tailed or two-tailed. O One-tailed O Two-tailed Н Step 2: Enter the test statistic. (Round to 3 decimal places.) 0<0 020 X X OSO 0=0 x-μ O √n • The p-value is the area under the curve to the left of the value of the test statistic. O>O 0.3- S #0
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