Select all of the following true statements if r = real numbers, i = integers, and w = {0, 1, 2, }.

a.) w ⊂ i
b.) r ⊂ w
c.) 0 ∈ i
d.) ø ⊂ r
e.) {0, 1, 2, } ⊆ w
f.) -2 ∈ w

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Find the area of the regular hexagon if a side is 20 cm.

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?