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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.

Respuesta :

WinWolfGaming
The mean is 11.7 i don't know the Variance
ogorwyne

The mean of the set is 11.69 while the variance is 10.78.

How to solve for the mean

= ∑fx / n

=  7.3 + 8.6 + 10.4 + 16.1 + 12.2 + 15.1 + 14.5 + 9.3

= 93.5/8

= 11.69

How to solve for the variance

Using this excel function =VAR(7.3,8.6,10.4,16.1,12.2,15.1,14.5,9.3)The variance is calculated as 10.78

Hence we can conclude that the mean of the set is 11.69 while the variance is 10.78

Read more on mean and variance here: https://brainly.com/question/25639778

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