A local 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 2.2 hours of labor time for planting of a medium-sized tree. A random sample of 36 tree plantings is selected and the planting times are recorded. The average planting time for the sample of 36 planting is 2.7 hours with a standard deviation of .9 hours. The researcher wants to test if the average planting time is significantly greater than 2.2 hours based on the data that was collected.

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A local 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 2.2 hours of labor time for
planting of a medium-sized tree.
A random sample of 36 tree plantings is selected and the planting times
are recorded.
The average planting time for the sample of 36 planting is 2.7 hours with
a standard deviation of .9 hours.
The researcher wants to test if the average planting time is significantly
greater than 2.2 hours based on the data that was collected.
Họ: H= 2.2
H1: u> 2.2
What is the value of the Test Statistic for this hypothesis test? Round Z to
the 100ths place.
Transcribed Image Text:A local 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 2.2 hours of labor time for planting of a medium-sized tree. A random sample of 36 tree plantings is selected and the planting times are recorded. The average planting time for the sample of 36 planting is 2.7 hours with a standard deviation of .9 hours. The researcher wants to test if the average planting time is significantly greater than 2.2 hours based on the data that was collected. Họ: H= 2.2 H1: u> 2.2 What is the value of the Test Statistic for this hypothesis test? Round Z to the 100ths place.
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