The U. S. Bureau of Labor Statistics reports that 11.3% of U. S. workers belong to unions (BLS website, January 2014). Suppose a sample of 400 U. S. workers is collected in 2014 to determine whether union efforts to organize have increased union membership.

Formulate the hypothesis that can be used to determine whether union membership increased in 2014.

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Which number completes the inequality? 2/3 < _ < 7/9

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?