## Question

###### Joan's Nursery specializes In custom-dcsigned landscaping for residential areas. The estimated Iabor cast associated wlth- paricular landscaping proposal based on the number plantIngs tees, shrubs; and so on t0 0e used foretha project . For cost-estimating pumpascs managers use two hours Iabor lme for the planting ofa medium-sized trze_ Actual tlmes from sample ot 10 plantings during the past month follow (tlmes hours)With 0.05 level of significance, test see whether the mean tree planting

Joan's Nursery specializes In custom-dcsigned landscaping for residential areas. The estimated Iabor cast associated wlth- paricular landscaping proposal based on the number plantIngs tees, shrubs; and so on t0 0e used foretha project . For cost-estimating pumpascs managers use two hours Iabor lme for the planting ofa medium-sized trze_ Actual tlmes from sample ot 10 plantings during the past month follow (tlmes hours) With 0.05 level of significance, test see whether the mean tree planting time differs from hvo hours State the null and altemative hypotheses. Ho: p 2 Ho: 0>2 Ha: # $ 2 "2 2 Compute the sampl Mcam Compute the sample standard deviation ruuno Your Jnjwer three decimnal places.) What the test statistic? (Round vour answer Lhree decimal pleces:) What the p-value? (Round your answer t0 four decimal places,) p-value What = your conclusion? Do not reject Ho: We can conclude that the mean Frce-d anting time differs from two hours There reason change from the tWo hours (or cost estimating aurposes Do not reject Ha' Wc cannot conclude that thc mcun trce-planting timc dilfers from two hours. There Is no Feason change from the tWo hours for cost estimating purposes: Reject Ho: We can conclude that the mean tree-planting tIme difters from two hours: There [.0 reason t0 change from the two hours for cost estimating purposes; Reject Ho: We cannot conclude that the mean tree-planting time differs from two hours_ There no fedson to change from the two hours for cost estmating purposes-