Assume that we want to construct a confidence interval. Do one of the following, as appropriate (a) find the critical value a/2. (b) find the critical value Zg/2, or (C) state that neither the normal distribution nor the t distribution applies
Here are summary statistics for randomly selected weights of newborn girls: n = 154, x = 31.9 hg, s = 75 hg The confidence level is 90%

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?

What is the solution to the equation e3x=12? round your answer to the nearest hundredth