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Please label and and show each step 3. For cost purposes, Holly’s Nursery managers use two...

Please label and and show each step 3. For cost purposes, Holly’s Nursery managers use two 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 two hours.

a. State the Null and Alternative hypothesis

b. Compute the sample mean

c. Compute the sample standard deviation.

d. What is the p-value?

e. What is your conclusion?  

math   Statistics-And-Probability   
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Answer #1

Below two photos are shown which includes all necessary calculation part and formulae.I doesn't use any statistical software to compute all calculation.I calculate by hand.thank uNU11 and Alternative hyPothesis does not Ho . The mean tree Planting Hrne Λ differes from VIs e mean tree Planting Hime danes rea diffens From tso houres. ( Mo) t Th Dara:- Ple meanSum of obsenvahions (a) number of observations (n) 1.8S C) sann Pie Standard Deviation (Xi-X) 2. S.D: (24反广 ,,L&m 12 ) | (24. ー8-10 So 0.13 102S 1.2 04225 2.1 0 0625 1 -7225 2O1225 0 722s d) under Ho, test staristic is 3 1.3225 0615625 1.85-乙 2.6 | ο.sens- 1.3 | 0.3025- F.S 0122 181025 12 and 1 d. ニー0.6653 Su 6-7) cakut It) -0 6653 table it l = 1.795-885-d) P-vaiue:testarishic is negative P-value=2(Areat the eft of test stati P-value o ST g74g Conclusion : e fail +0 γeJeUr. Ho. )、eThe mea n tree Planting time does not diff ens 2 hours

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