Stocks and Mutual Fund Ownership It has been found that of U. S. households own stocks and mutual funds. A random sample of heads of households indicated that owned some type of stock. At what level of significance would you conclude that this was a significant difference? Use the -value method.

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?

The bolo cavern outside of vandalia is 421 ft below sea level. a little more than75 miles away. mt owens is 7295 feet above sea level. what is the difference in elevation between the bolo cavern and mt owens?

Let x = a + bi and y = c + di and z = f + gi. which statements are true?