1.The modelY=₀+₁X+₂X²cannot be estimated by Excel because of the nonlinear term. True False

2.Ifn= 25 and= .05 in a right-tailed test of a mean with unknown, thecriticalvalueis: .0179 1.645 1.711 1.960

3.The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 56 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Which are the hypotheses to test whether the mean is smaller than it is supposed to be?

H₀:< 56,H₁: 56 H₀: 56,H₁:< 56 H₀:= 56,H₁: 56 H₀: 56,H₁:> 56

4.To estimate the average annual expenses of students on books and class materials a sample of size 36 is taken. The sample mean is $850 and the sample standard deviation is $54. A 99 percent confidence interval for the population mean is: $826.82 to $873.18 $825.48 to $874.52 $832.36 to $867.64 $823.72 to $876.28