Which confidence level would produce the widest when estimating the mean of a population based an the mean and standard deviation of a population? A. 23%
B. 57%
C. 42%
D. 31%

Can someone check my answer? you : )

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

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.