A 6-cylinder engine has two defective spark plugs. Three spark plugs were selected randomly and their condition was examined. Considering that X is a number of spark plugs that are not working properly, find: a. The probability distribution of X and express it in a table form
b. The expected value of X
c. The standard deviation
d. The probability that at least two spark plugs not working properly.

What is the logarithmic function modeled by the following table? x f(x) 9 2 27 3 81 4

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?