Xlstat jar
Z-test for two proportions / Upper-tailed test: Difference az (Observed value) z (Critical value) p-value (one-tailed) alpha 0.040 1.200 1.645 0.115 0.05 z-test for two proportions / Two-tailed test: b 95% confidence interval on the difference between the proportions: (-0.025, 0.105 ) t-test for two paired samples / Two-tailed test: 0.843 1.189 2.262 Difference Ct(Observed value) It (Critical value) DF p-value (Two-tailed) alpha 9 0.265 0.05 Fisher's F-test / Two-tailed test: Ratio F (Observed value) d) F (Critical value) DF1 DF2 p-value (Two-tailed) alpha 1.037 1.037 2.979 14 14 0.947 0.05 Do not reject H b) Can we infer that there are any differences in the amount of wear depending on what terrain is driven (roads, gravel or rough, hilly terrain)? 5 marks p-value: Conclusion: Reject H. a) Can we infer that there are any differences in the amount of wear depending on the brand of tire? 13 marks Printout # HO: H: p-value: Conclusion: Reject H. After each car has driven its path, the amount of wear on the tires is measured and recorded. One car from each set drives a long pre-determined path on rough, hilly terrain. One car from each set drives a long pre-determined path on gravel. One car from each set drives a long pre-determined path on roads. Beginning with 12 identical cars, 3 cars have tires of one brand installed on them, another 3 have another brand, another 3 have another brand, and the remaining 3 have the remaining brand installed on them. To compare four different brands of tires the following experiment was designed. Can we infer that people who pay regular price for a laptop are more likely to purchase an extended warranty? 13 marks Printout # HO: H: p-value: Conclusion: Reject H. An electronics store took a random sample of people who purchased a laptop within the last year and recorded if the person paid full-price or a sale price, and whether they purchased an extended warranty. Estimate the difference in the number of putts per round between the new putter and old putter. A golfer plays some rounds with her new putter and some rounds with her old putter and records the number of putts for each round.
#Xlstat jar android
Can we infer that there is a difference between the satisfaction level of IPhone users and Android users? 13 marks Printout # HO: H: p-value: Conclusion: Reject H. Each user was asked to rate their level of satisfaction with their phone on a scale from 1 to 10 with 10 being the highest level of satisfaction. To determine whether IPhone users or Android users report a higher level of satisfaction with their phone, a random selection of IPhone users and Android users was selected where one user for each type of phone was 15-20 years old, one user for each type of phone was 20-25 years old, one user for each type of phone was 25-30 years old, and so on. Estimate the difference between the total weekly tips waiters receive and the total weekly tips waitresses receive. The total amount in tips they received in one week was recorded. From each restaurant a waiter and a waitress who worked the same shifts were chosen. To test this claim, many restaurants were chosen from across the city. It is suspected that in a certain city, waiters receive a different amount of tips than waitresses. Can we infer that the variance in jam jar weights differs between the jam producers? 13 marks Printout # Ho: H: p-value: Conclusion: Reject H. Jars from each producer are weighed and the weights are recorded. Two jam producers produce jars of strawberry jam. Can we infer that there is a difference in the amount of time it takes for the brands of paint to dry? 13 marks Printout # Ho: H: p-value: Conclusion: Reject H. The amount of time for each wall to dry is recorded. To test this claim, each brand of paint is used to paint the same number of walls. Four brands of paint are advertised to dry in the same amount of time. Upload your solution in the Assignments folder before 11:59pm on March 28. Write the hypotheses the same way they are given in the learning modules or textbook. Note that 2 printouts will remain unselected. Your solution should be this document with all the blanks filled in. A significance level of a = 0.05 is used for each hypothesis test and a confidence level of 95% is used for each confidence interval estimate. Assume all required conditions have been met for each question. Transcribed image text: Instructions: Select the best XLSTAT printout to answer each question.