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

Only parts c and d

It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico:  x 5.75 6.25 6.75 7.75 8.25 y 31 26 38 74 72 Find the value of the coefficient of determination r2.     –0.939   –0.883   0.883   –0.061   –0.117

It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico: x 5.25 5.50 5.75 6.00 6.75 y 15 41 29 63 46 Given that r=0.592 and ² = 0.35, should a least squares line be used for predictions if a coefficient of determination of more than 0.5 is required? O Since about 59.2% of the behavior of the y variable can be explained by the corresponding behavior of the x variable if we use the equation of the least-squares line, the…

It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico: 5.00 5.75 6.00 6.50 7.25 12 31 41 52 56 Find o for the equation of the least-squares line y =a+bx. -0.046 20.195 0.046 -0.009 -0.055

It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico:  x 5.75 6.25 6.75 7.75 8.25 y 31 26 38 74 72 ​ Find the value of the coefficient of determination r2. Round your answer to three decimal places. Group of answer choices –0.061 –0.883 –0.939 0.883

It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific cultural affiliation as the elevation of the site increases. Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were obtained for a collection of archaeological sites in New Mexico: 6.00 6.50 6.75 7.50 8.50 28 20 17 30 85 Find the value of the coefficient of determination 2. O -0.703 -0.162 0.297 0.703 0.162

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please answer number 2 only

Hi can you correct the wrong questions.