exam
Maths Puzzle
Numerical Ability
if n = 105 (# of houses)
sample mean price of house is = x = 221,000.00
z = 1.96 for confidence interval of 95%
how do i calculate the confidence levels?
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exam Other Question
A car and a bus set out a 2 p.m. from the same point, headed in the same direction. The average speed of the car is 30 mph slower than twice the speed of the bus. In two hours, the car is 20 miles ahead of the bus. Find the rate of the car.
Simplify
-10(2a - 6b)