Trinity's class went on a field trip to an aquarium. One tank held 36 Yellow Tang fish. She miscounted the total number of Yellow Tang fish in the tank and recorded it as 31 fish. Rounded to the nearest 10th of a percent, which choice best represents Trinity's percent error?

She rounded down instead of up.

Step-by-step explanation:

When you are rounding, if the number is above 5 you round up and when the number is below 5 you round down.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

all it means is function 3