Which way of dispensing champagne, the traditional vertical method or a tilted beer-like pour, preserves more of the tiny gas bubbles that improve flavor and aroma? The following data was reported in an article. Temp (°C) Type of Pour n Mean (g/L) SD 18 Traditional 4 4.0 0.5 18 Slanted 4 3.7 0.3 12 Traditional 4 3.4 0.4 12 Slanted 4 2.0 0.2 Assume that the sampled distributions are normal. I A USE SALT (a) Carry out a test at significance level 0.01 to decide whether true average Co, loss at 18°C for the traditional pour differs from that for the slanted pour. (Use , for the traditional pour and , for the slanted pour.) State the relevant hypotheses. O Hg: M, - H2 > 0 H,: H - H2 = 0 O Hạ: M - 2 - o Hi M - H2 > 0 O Hg: H - H2 = 0 Hi - H2 <0 O Hg: M - H2 = 0 Hi H - H2 +0 O H: , - H, < 0 HH, - H, = 0 Calculate the test statistic and P-value. (Round your test statistic to one decimal place and your P-value to three decimal places.) P-value- State the conclusion in the problem context. O Reject Hg. The data suggest that the true average Co, loss at 18°C for the traditional pour differs from that for the slanted pour. O Fail to reject H. The data do not suggest that the true average co, loss at 18°C for the traditional pour differs from that for the slanted pour. O Reject Hg. The data do not suggest that the true average Co, loss at 18°C for the traditional pour differs from that for the slanted pour. O Fail to reject H. The data suggest that the true average Co, loss at 18°C for the traditional pour differs from that for the slanted pour. (b) Repeat the test of hypotheses suggested in (a) for the 12° temperature. Is the conclusion different from that for the 18° temperature? Note: The 12° result was reported in the popular media. (Use , for the traditional pour and H, for the slanted pour.) State the relevant hypotheses. O Hg: H - H2 < 0 O Ha: H - H2 - 0 H - H2 > 0

The data found below measure the amounts of greenhouse gas emissions from three types of vehicles. The measurements are in tons per​ year, expressed as CO2 equivalents. Use a 0.025 significance level to test the claim that the different types of vehicle have the same mean amount of greenhouse gas emissions. Based on the​ results, does the type of vehicle appear to affect the amount of greenhouse gas​ emissions? A. Determine the test statistic. F= ​(Round to two decimal places as​ needed.)   B. Identify the​ P-value. ​P-value= ​(Round to two decimal places as​ needed.)

A student who took Stat 2 last semester learns that their overall course score was at the 85th percentile. Assuming that a histogram of all the Stat 2 course scores from last semester follows the normal curve, this means that this student had a score that was how many SDs above the average score? Choose the answer that is closest. Group of answer choices 1.15 1.05 1.10 1.0      PreviousNext

Suppose the lengths of human pregnancies are normally distributed with µ = 266 days and o = 16 days. Complete parts (a) and (b) below. ..... (a) The figure to the right represents the normal curve with u = 266 days and o = 16 days. The area to the right of X= 300 is 0.0168. Provide two interpretations of this area. %3D Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) A. The proportion of human pregnancies that last less than days is O B. The proportion of human pregnancies that last more than days is 266 300 Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) O A. The probability that a randomly selected human pregnancy lasts more than days is B. The probability that a randomly selected human pregnancy lasts less than days is (b)…