Complete the chart to find the mean, variance, and standard deviation. remember to use commas and round numbers to the nearest tenth.

x

x

x - x

(x - x )2

1. 45 = -357.5 = the mean is

2. 340 = -62.5 = the variance is

3. 400 = -2.5 = the standard deviation is

4. 825 = 422.5 = n =

σ x = x = σ (x - x)2 = 310,225.2

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is

Acertain company's main source of income is a mobile app. the company's annual profit (in millions of dollars) as a function of the app's price (in dollars) is modeled by p(x)=-2(x-3)(x-11)p(x)=−2(x−3)(x−11) which app prices will result in \$0$0 annual profit? enter the lower price first.