mecializes in custom-designed landscaping for residential areas. The estimated ngs 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 med times from a sample of 10 plantings during the past month follow (times in hours). your answer Iyour answer 2 2.9 (to 3 decimals) ect your answer 1.5 2.4 of significance, test to see whether the mean tree-planting time differs from two hours. and alternative hypotheses. sample mean. decimals) sample standard deviation. decimals) statistic and p-value. (Use Table 2 in Appendix B.) 1.6 3.4 4 2.6 1.8 3.1 2.5 2.5
mecializes in custom-designed landscaping for residential areas. The estimated ngs 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 med times from a sample of 10 plantings during the past month follow (times in hours). your answer Iyour answer 2 2.9 (to 3 decimals) ect your answer 1.5 2.4 of significance, test to see whether the mean tree-planting time differs from two hours. and alternative hypotheses. sample mean. decimals) sample standard deviation. decimals) statistic and p-value. (Use Table 2 in Appendix B.) 1.6 3.4 4 2.6 1.8 3.1 2.5 2.5
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text: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).
Select your answer - 2
t
Họ:1
H₂H
b. Compute the sample mean.
(to 2 decimals)
c. Compute the sample standard deviation.
(to 4 decimals)
d. Find the test statistic and p-value. (Use Table 2 in Appendix B.)
- Select your answer - 2
✓
(to 3 decimals)
2.9
3.4
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 -
1.5
v
2.4
1.6
4
2.6
p-value
e. What is your conclusion?
We
Select your answer-reject the null hypothesis. There - Select your answer -
1.8
3.1
2.5
2.5
✓enough evidence to prove that the mean tree-planting time differs from 2 hours.
Hint(e) Check My Work
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