Acompany needs to reduce its sound level 44%. use the decimal formula

Which of the following are accepted without proof in a logical system? check all that apply.

X² + 4y² = 36 the major axis runs along: a) y=4x b) x-axis c) y-axis

Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.