Question

In: Statistics and Probability

For cost purposes, Holly’s Nursery managers use two and one half hours of labor time for...

  1. For cost purposes, Holly’s Nursery managers use two and one half hours of labor time for planting a medium – sized tree. Actual times from a sample of 12 plantings during the past month follow (times in hours). The data below can be imported into Excel for analysis.

1.8        1.2        2.1        2.7        2.7        3          0.6        1.8        2.6        1.3        1.5        0.9

With a 0.05 level of significance, test to see whether the mean tree planting time differs from 2.5 hours.

  1. State the Null and Alternative hypothesis
  1. Compute the sample mean

  1. Compute the sample standard deviation.

  1. What is the p-value?

  1. What is your conclusion?

Solutions

Expert Solution

Given :

data :

1.8        1.2        2.1        2.7        2.7        3          0.6        1.8        2.6        1.3        1.5        0.9

n = 12

significance level ,

= 0.05

confusion

we have sufficient evidence to conclude that the mean tree planting time differ from 2.5 hours

orchestra answered 1 year ago
Next > < Previous

Related Solutions

For cost purposes, Holly’s Nursery managers use two and one half hours of labor time for...
For cost purposes, Holly’s Nursery managers use two and one half hours of labor time for planting a medium – sized tree. Actual times from a sample of 12 plantings during the past month follow (times in hours). The data below can be imported into Excel for analysis. 1.8 1.2 2.1 2.7 2.7 3 0.6 1.8 2.6 1.3 1.5 0.9 With a 0.05 level of significance, test to see whether the mean tree planting time differs from 2.5 hours. a....
An employee receives an hourly rate of $15, with time and a half for all hours...
An employee receives an hourly rate of $15, with time and a half for all hours worked in excess of 40 during the week. Payroll data for the first week of the calendar year are as follows: hours worked, 46; federal income tax withheld, $110, Social security tax rate,6%; and Medicare tax rate, 1.5%; state unemployment tax, 5.4% on the fast $7,000; federal unemployment tax, 0.81% on the first $7,000. What is the net amount to be paid to the...
An employee receives an hourly rate of $15, with time and a half for all hours...
An employee receives an hourly rate of $15, with time and a half for all hours worked in excess of 40 during the week. Payroll data for the current week are as follows: hours worked, 46; federal income tax withheld, $120; all earnings are subject to social security tax; Social security tax rate, 6%; and Medicare tax rate, 1.5%; state unemployment compensation tax, 3.4% on the first $7,000; federal unemployment compensation tax, 0.8% on the first $7,000. Prepare the journal...
Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a...
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 one and a half 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). With a 0.05 level of...
Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a...
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 one and half 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). 1.5 0.9 2.6 1.6 2.4 3.3...
Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a...
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). 1.8 1.4 2.7 2.1 2.4 2.3 2.6 3.0 1.4...
Consider the following table on labor hours needed to produce one unit of output for two...
Consider the following table on labor hours needed to produce one unit of output for two different goods in two different countries: United States France Computer 60 50 Wine 20 25 a. The opportunity cost of a computer in France is __________. b. The opportunity cost of a computer in the United States is __________. c. The opportunity cost of one unit of wine in France is __________. d. The opportunity cost of one unit of wine in the United...
Lewis Company’s standard labor cost of producing one unit of Product DD is 3.10 hours at...
Lewis Company’s standard labor cost of producing one unit of Product DD is 3.10 hours at the rate of $12.70 per hour. During August, 42,200 hours of labor are incurred at a cost of $12.80 per hour to produce 13,500 units of Product DD. (a) Compute the total labor variance. Total labor variance $enter the Total labor variance in dollars   select an option                                                      ...
Sadie White receives an hourly rate of $30, with time and a half for all hours...
Sadie White receives an hourly rate of $30, with time and a half for all hours worked in excess of 40 during a week. Payroll data for the current week are as follows: hours worked, 48; federal income tax withheld, $300; social security tax rate, 6.0%; and Medicare tax rate, 1.5%. What is the net amount to be paid to White? $1,143.00 $1,260.00 $1,443.00 $1,000.00
The half-life of a reaction, t1/2, is the time required for one-half of a reactant to...
The half-life of a reaction, t1/2, is the time required for one-half of a reactant to be consumed. It is the time during which the amount of reactant or its concentration decreases to one-half of its initial value.Determine the half-life for the reaction in Part B using the integrated rate law, given that the initial concentration is 1.95 mol⋅L−1 and the rate constant is 0.0019 mol⋅L−1⋅s−1
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT