Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours). 2.3 1.8 2.9 3.1 2.6 1.5 2.5 3.6 1.6 2.5 With a 0.05 level of significance, test to see whether the mean tree-planting time differs from two hours. a. State the null and alternative hypotheses. Select your answer - rd: °H Ha: H Select your answer - b. Compute the sample mean. (to 2rdecimals) c. Compute the sample standard deviation. (to 4 decimals) d. Find the test statistic and p-value. (Use Table 2 in Appendix B.) (to 3 decimals) p-value - Select your answer - e. What is your conclusion? enough evidence to prove that the mean tree-planting time differs from Select your answer - We Select your answer - v reject the null hypothesis. There 2 hours.
Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours). 2.3 1.8 2.9 3.1 2.6 1.5 2.5 3.6 1.6 2.5 With a 0.05 level of significance, test to see whether the mean tree-planting time differs from two hours. a. State the null and alternative hypotheses. Select your answer - rd: °H Ha: H Select your answer - b. Compute the sample mean. (to 2rdecimals) c. Compute the sample standard deviation. (to 4 decimals) d. Find the test statistic and p-value. (Use Table 2 in Appendix B.) (to 3 decimals) p-value - Select your answer - e. What is your conclusion? enough evidence to prove that the mean tree-planting time differs from Select your answer - We Select your answer - v reject the null hypothesis. There 2 hours.
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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Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is
based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost estimating purposes, managers use two hours of labor time for
the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours).
2.3
1.8
2.9
3.1
2.6
1.5
2.5
3.6
1.6
2.5
With a 0.05 level of significance, test to see whether the mean tree-planting time differs from two hours.
a. State the null and alternative hypotheses.
Ho : p
Select your answer -
l : "H´
b. Compute the sample mean.
- Select your answer - V
(to 2rdecimals)
c. Compute the sample standard deviation.
(to 4 decimals)
d. Find the test statistic and p-value. (Use Table 2 in Appendix B.)
(to 3 decimals)
p-value
Select your answer -
e. What is your conclusion?
enough evidence to prove that the mean tree-planting time differs from
Select your answer -
We
Select your answer - v reject the null hypothesis. There
2 hours.
? i
Aa
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