Which equations have a unit rate of change of 4.5 ? select 2 answers

A. y = 62 + 4.5x
B. c = 4.5 + 3(h - 1)
C. c = 12 + 4.5(h - 1)
D. y = 3.5x + 1
E. y = 4.5 + 20x

Given z value let x be a normal random variable with standard deviation (d) = 1.65 (i) find the margin of error for a 90 percent confidence interval for mean corresponding to a sample size of 12 (3/100) (ii) interpret the result of question 3( (4/100) /- [cpt115] -5 (ii) with reference to question 3(d)(i), find an approximate 90 percent confidence interval for mean if the 12 sample values of x are as follows: 95 103 107 98 90 110 92 108 90 94 105 100 (7/100) interpret the result of question 3(d)(ii) (iv)