Create and interpret the following tests using the following data: confidence interval, t-test, p-value and F- test Y = weekly sales X = advertisement cost Model: Y = 2.6911-0.4795 X SE (0.1216) SE (0.1140) HO: b0 = 0 a = 0.05 tcrit = 2.2622 RSS = 33.27 H1: b0 # 0 n = 11 ESS = 8552.73
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- x (temperature) y (oxidation) -2 4 -1 2 0 2 1 1 2 1 i. construct a 95% confidence interval for the mean thickness of oxidation when temperature is 2 units. ii. constrtuct a 95% prediction interval for the thickness of oxidation when temperature is 2 units.Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certain area was 0.12 milligrams per liter (mg/L). A random sample of 10 precipitation dates in 2007 results in the following data table. 0.0720.0710.0890.2410.1130.1790.1150.2120.3340.111 Construct a 90% confidence interval about the sample mean concentration of calcium precipitation. What is the lower bound? The upper bound?Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certain area was 0.12 milligrams per (mg/L). A random sample of 10 precipitation dates in 2007 results in the following data table. 0.074 0.084 0.081 0.278 0.119 0.183 0.124 0.243 0.314 0.107 Construct a 95% confidence interval about the sample mean concentration of calcium precipitation. The lower bound is _____ The upper bound is _____( round to four decimal places as needed)
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