Computing the sample test statistic

Assignment Help Basic Statistics

Reference no: EM1399816

Joan's nursery specializes in custom-designed landscaping for residential areas. the estimated labour 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-estimated purposes, managers use two hours of labour time for the planting of a medium sized tree. actual times from a sample of ten plantings during the past month follow (times in hours)

1.7
1.5
2.6
2.2
2.4
2.3
2.6
3.0
1.4
2.3

with a 0.05 level of significance, test to see whether the mean tree-planting time differs from two hours.

1) state the null and alternative hypothesis

2) compute the sample mean

3) compute the sample standard deviation

4) compute the sample (test) statistic

5) formulate the decision rule

6) what is your conclusion

Reference no: EM1399816

Questions Cloud

Recommendation of a safety stock level : Linda would like to maintain a 90% service level. what safety stock level do you recommend for BX-5?

Determine the p-value of the test statistic : Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. Test the claim that p is less than 0.301 by using What is the P-value of the test statistic?

Pertinent to the class material : As a bonus, students are encouraged to research new and interesting articles/ websites/ interactive tools, etc. which are pertinent to the class material.

Computing the sample test statistic : Joan's nursery specializes in custom-designed landscaping for residential areas. the estimated labour 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.

Estimating of the population proportion of accounts : Construct a 99% confidence interval estimate of the population proportion of accounts that would purchase the additional line if the handset were free.

Determine the setting for the mean : Determine the setting for the mean so that no more than 1% of the cans of paint will be unacceptable.

Extreme value of the confidence interval : Change the last number in that set from 36 to 14 and recalculate the confidence interval. Using the results, describe the effect of an outlier or extreme value on the confidence interval.

The portfolio weight of stock : You own a $46,000 portfolio comprised of four stocks. The values of stocks A, B, and C are $5,600, $16,700, and $11,400, respectively. What is the portfolio weight of stock D?

User Account

All Pages