A journalist wishes to collect new random sample with the aim of building a new confidence interval at the 95% confidence level for p. Using the Economist’s study as a basis, what sample size (n) would the journalist require to achieve a 6% margin of error?

(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *… 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, …., 1+2+3+… + 99, and 1+2+3+… + 100

On a piece of paper graph f(x)=5•(0.4)^x

Find the domain of the following expression: 1/(√x)-2