Suppose the proportion of the population in favor of a new law is 0.60. (a) (3 points) Suppose you take a sample of size n = 500. What is the probability that your sample proportion is 0.55 or lower? (b) (3 points) Suppose that you take a sample of size n = 400 and find the sample proportion pˆ = 0.70. How many standard deviations is pˆ from the mean of the distribution of all sample proportions?

i pretty sure it is

grab rope, tie a loop-de-loop, put it around ur neck, now jump while its tied to a high place. now your shoes are cool.

step-by-step explanation:

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this