You have collected a sample of size 100 data points and compute a 90% confidence interval for the mean amount of bread gotten by workers in boulder county. the confidence interval you obtained is [5, 15], where the units are loaves/day. you want to check this result using a larger sample, so you collect a new sample of size 900. the mean of your new, larger sample is 1 loaf/day higher than the smaller sample, but the standard deviation is the same. using the sample of size 900, what is the 90% confidence interval for mean amount of bread gotten by workers in boulder county?

The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

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.

Aline passes through (1,-5) and(-3,7) write an equation for the line in point slope form rewrite the equation in slope intercept form