The tar contents of 8 brands of cigarettes selected at random from the latest list released by the federal Trade Commission is as follows: 7.3, 8.6, 10.4, 16.1, 12.2, 15.1, 14.5, and 9.3 milligrams. Calculate (

a. The mean; (

b. The variance.

Meredith needs to buy 8 pounds of lemons to make lemonade if the cost of 4 pounds of lemons is $6 what is the cost for 8 pounds of lemons

What kind of triangle is this? Explain. 2 sides are 15 inches, 1 side is 10 inches.

How many solutions does this equation have 17 + 19n + 20 = - 6 (-4n-2)

How do you solve this problem X2 (3x2+4x-5)

What is the ratio for 360 customers in 30 days

Formula to solve 5/8m=12

Find the missing number in the pattern - 2,7,26,101,400,?

Factorise then following X^2-3x+2

Mr Murray's distance away (in meters) from his classroom after t seconds can be modeled by the following equation: M (t) = 3.5t + 2. After 3 seconds, how far is Mr Murray away from his classroom?

The upper arm length of females over 20 years old in a country is approximately Normal with mean 35.8 centimeters (cm) and standard deviation 2.5 cm. Use the 68-95-99.7 rule to answer the following questions. (Enter your answers to one decimal place.