A data set includes data from 400 random tornadoes. The display from the technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.3 miles. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistics, P-value, and state the final conclusion that addresses the original claim.
A data set includes data from 400 random tornadoes. The display from the technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.3 miles. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistics, P-value, and state the final conclusion that addresses the original claim.
A data set includes data from 400 random tornadoes. The display from the technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.3 miles. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistics, P-value, and state the final conclusion that addresses the original claim.
A data set includes data from 400 random tornadoes. The display from the technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.3 miles. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistics, P-value, and state the final conclusion that addresses the original claim.
Transcribed Image Text:30. A data set includes data from 400 random tornadoes. The display from technology available below results from using the tornado lengths (miles) to test the claim that
the mean tornado length is greater than 2.3 miles. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistic, P-value, and state the final
conclusion that addresses the original claim.
7 Click the icon to view the display from technology.
Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses?
O A. Ho: μ =2.3 miles
H₁: μ>2.3 miles
O C. Ho: μ<2.3 miles
H₁: μ = 2.3 miles
Identify the test statistic.
(Round to two decimal places as needed.)
Identify the P-value.
(Round to three decimal places as needed.)
State the final conclusion that addresses the original claim.
(1)
(1)
7: Display from Technology
Ho. There is (2).
O Reject
Fail to reject
(2) O not sufficient
sufficient
O B. Ho: μ = 2.3 miles
H₁: μ<2.3 miles
Hypothesis test results:
μ: Mean of variable
H₂:μ=2.3
HA:H>2.3
Variable Sample Mean
Length
2.43622
O D. Ho: μ=2.3 miles
H₁: μ#2.3 miles
evidence to support the claim that the mean tornado length is greater than 2.3 miles
Std. Err. DF T-Stat P-value
0.276882 399 0.491979 0.3115
Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...
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