Josh plans to make bird houses to sell at a craft fair the sample of wood he uses has an area of 1/5 square foot in weighs 1/2 lb the local hardware store sells the wood only by the square yard there are 9 square feet in 1 square yard a. how many pounds of the wood are there in 1 square yard? b. if josh needs three square yards of the woods in all how many pounds of the wood does he need

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?

The blue segment below is a diameter of o. what is the length of the radius of the circle?

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.