In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. Sketch the sampling distribution and show the area corresponding to the P-value.baO-4-2-2dCO-4-2O-44(d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level a?O At the a = 0.01 level, we reject the null hypothesis and conclude the data are statistically significant.O At the a = 0.01 level, we fail to reject the null hypothesis and conclude the data are statistically significant.O At the a = 0.01 level, we fail to reject the null hypothesis and conclude the data are not statistically significant.O At the a = 0.01 level, we reject the null hypothesis and conclude the data are not statistically significant.(e) State your conclusion in the context of the application.O Fail to reject the null hypothesis, there is insufficient evidence to claim average peak wind gusts are higher in January.O Reject the null hypothesis, there is insufficient evidence to claim average peak wind gusts are higher in January.O Fail to reject the null hypothesis, there is sufficient evidence to claim average peak wind gusts are higher in January.O Reject the null hypothesis, there is sufficient evidence to claim average peak wind gusts are higher in January. In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and thereforeproduce a slightly more "conservative" answer.At five weather stations on Trail Ridge Road in Rocky Mountain National Park, the peak wind gusts (in miles per hour) for January and April are recorded below.Weather StationJanuary2120111312610215135647861Does this information indicate that the peak wind gusts are higher in January than in April? Use a = 0.01. (Let d = January - April.)April10488(a) What is the level of significance?State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test?O Ho: H = 0; H,: Hg > 0; right-tailedO Ho: Hd = 0; H: Hd< 0; left-tailedO Ho: Hd = 0; H,: H# 0; two-tailedO Ho: Hd > 0; H,: Hg = 0; right-tailed(b) What sampling distribution will you use? What assumptions are you making?O The Student's t. We assume that d has an approximately normal distribution.O The standard normal. We assume that d has an approximately uniform distribution.O The Student's t. We assume that d has an approximately uniform distribution.O The standard normal. We assume that d has an approximately normal distribution.What is the value of the sample test statistic? (Round your answer to three decimal places.)(c) Find (or estimate) the P-value.O P-value > 0.250O 0.125 < Pp-value < 0.250O 0.050 < P-value < 0.125O 0.025 < Pp-value < 0.050O 0.005 < P-value < 0.025O P-value < 0.005

Here we need to test whether peak wind gusts are higher in January than in April. (a) The level of…

In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the dosest d.f. that is smaller. In some situations, this choice of d.f. may increase the P.value by a small amount and therefore produce a slightly more "conservative" answer. At five weather stations on Trail Ridge Road in Rocky Mountain National Park, the peak wind gusts (in miles per hour) for January and April are recorded below. Weather Station 1 3 4 5 January April 2 | 135 120 |104 111 102 88 61 Does this information indicate that the peak wind gusts are higher in January than in April? Use a - 0.01. (Let d - January - April.) (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? O Ho: H- 0; H H> 0; right-tailed O Ho: H- 0; H: M < 0; left-tailed O Ho: Hg- 0; H,: H 0; two-tailed O Hại Hg > 0; Hại Mg - 0; right-tailed (b) What sampling distribution will you use? What assumptions are you making? O The Student's t. We assume that d has an approximately normal distribution. O The standard normal. We assume that d has an approximately uniform distribution. O The Student's t. We assume that d has an approximately uniform distribution. O The standard normal. We assume that d has an approximately normal distribution. What is the value of the sample test statistic? (Round your answer to three decimal places.) (C) Find (or estimate) the Pvalue. O P.value > 0.250 O 0.125 < Pvalue < 0.250 O 0.050 < P-value <0.125 O 0.025 < P-value <0.050 O 0.005 < Pvalue < 0.025 O P-value <0.005

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P