Find the critical value Zc necessary to form a confidence interval at the level of confidence shown below. C = 0.96
Zc =
(Round to two decimal places as needed.)

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

Mrs. chibas is making chocolate chip cookies for her daughter's class. she bought a tub of chocolate chip cookie dough that contained 57.6 ounces of dough. if each cookie needs 1.2 ounces of dough, how many cookies can she make