An energy company wants to choose between two regions in a state to install energy-producing wind turbines. A researcher claims that the wind speed in Region A is less than the wind speed in Region B. To test the regions, the average wind speed is calculated for 60 days in each region. The mean wind speed in Region Ais 13.9 miles per hour. Assume the population standard deviation is 2.8 miles per hour. The mean wind speed in Region B is 15.1 miles per hour. Assume the population standard deviation is 3.1 miles per hour. At a = 0.05, can the company support the researcher's claim? Complete parts (a) through (d) below. O A. z> O B. z< or z> O C. z< (c) Find the standardized test statistic z. (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis and interpret the decision in the context of the original claim. Ho. There enough evidence at the 5% level of significance to the researcher's claim that the wind speed in Region A is the wind speed in Region B.
An energy company wants to choose between two regions in a state to install energy-producing wind turbines. A researcher claims that the wind speed in Region A is less than the wind speed in Region B. To test the regions, the average wind speed is calculated for 60 days in each region. The mean wind speed in Region Ais 13.9 miles per hour. Assume the population standard deviation is 2.8 miles per hour. The mean wind speed in Region B is 15.1 miles per hour. Assume the population standard deviation is 3.1 miles per hour. At a = 0.05, can the company support the researcher's claim? Complete parts (a) through (d) below. O A. z> O B. z< or z> O C. z< (c) Find the standardized test statistic z. (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis and interpret the decision in the context of the original claim. Ho. There enough evidence at the 5% level of significance to the researcher's claim that the wind speed in Region A is the wind speed in Region B.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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drop down choices:
Box 1: reject, fail to reject
box 2: is, is not
box 3: support, reject
box 4: not less than, less than, the same as, not greater than
Transcribed Image Text:An energy company wants to choose between two regions in a state to install energy-producing wind turbines. A researcher claims
that the wind speed in Region A is less than the wind speed in Region B. To test the regions, the average wind speed is calculated
for 60 days in each region. The mean wind speed in Region A is 13.9 miles per hour. Assume the population standard deviation is
2.8 miles per hour. The mean wind speed in Region B is 15.1 miles per hour. Assume the population standard deviation is 3.1 miles
per hour. At a = 0.05, can the company support the researcher's claim? Complete parts (a) through (d) below.
O A. z>
О В. 2<
or z>
O C. z<
(c) Find the standardized test statistic z.
(Round to two decimal places as needed.)
(d) Decide whether to reject or fail to reject the null hypothesis and interpret the decision in the context of the original claim.
Hо- There
enough evidence at the 5% level of significance to
the researcher's claim that the
wind speed in Region A is
the wind speed in Region B.
Click to select vour answerís)
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