The article "uncertainty estimation in railway track life-cycle cost"† presented the following data on time to repair (min) a rail break in the high rail on a curved track of a certain railway line.159 120 480 149 270 547 340 43 228 202 240 218a normal probability plot of the data shows a reasonably linear pattern, so it is plausible that the population distribution of repair time is at least approximately normal. the sample mean and standard deviation are 249.7 and 145.1, respectively.(a) is there compelling evidence for concluding that true average repair time exceeds 200 min? carry out a test of hypotheses using a significance level of 0.05.state the appropriate hypotheses. h0: μ > 200ha: μ = 200h0: μ < 200ha: μ = 200 h0: μ = 200ha: μ ≠ 200h0: μ = 200ha: μ > 200h0: μ = 200ha: μ < 200calculate the test statistic and determine the p-value.

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Which line is parallel to the line that passes through the points (2, –5) and (–4, 1) a. y=-x+5 b. y=-2/3x+3 c. y=2/3x-2 d. y=x+5

Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value.