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). 2.4 Ho - Select your answer - 2 Ha - Select your answer b. Compute the sample mean. (to 2 decimals) t 2 2.8 (to 3 decimals) p-value Select your answer - 2.2 2.7 c. Compute the sample standard deviation. (to 4 decimals) d. Find the test statistic and p-value. (Use Table 2 in Appendix B.) 1.7 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. 1.5 1.6 2.4 2.6 3.1 e. What is your conclusion? We - Select your answer - reject the null hypothesis. There Select your answer. enough evidence to prove that the mean tree-planting time differs from 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). 2.4 Ho - Select your answer - 2 Ha - Select your answer b. Compute the sample mean. (to 2 decimals) t 2 2.8 (to 3 decimals) p-value Select your answer - 2.2 2.7 c. Compute the sample standard deviation. (to 4 decimals) d. Find the test statistic and p-value. (Use Table 2 in Appendix B.) 1.7 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. 1.5 1.6 2.4 2.6 3.1 e. What is your conclusion? We - Select your answer - reject the null hypothesis. There Select your answer. enough evidence to prove that the mean tree-planting time differs from 2 hours.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter1: Expressions And Functions
Section1.5: Descriptive Modeling And Accuracy
Problem 11PPS
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