1. (4 pts) A synthesis fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 80 psi and standard deviation 4 psi. Find the probability that a random sample of 9 fiber specimens will have sample mean tensile strength of at most 78 psi.

d is the answer

step-by-step explanation:

may i see the picture? it would a lot, xox

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.

if the pizza is divided equally into 2 equal halves then you would get

πr^2/2

where r is the radius of the pizza.

happy to

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