Question

4. Use the frequency table to find the probability of 1 or less responses received to this week's newspaper editorials.PS 1) = ?Number of ResponsesNumber of Editorials0201302563384345166 or more6Total2000.250.500.700.75

Answer 1

Notice that there are 20 editorials with 0 responses and 30 with 1 response. Then, a total of 50 editorials have 1 or less responses.

Since the total number of editorials is 200, divide 50 by 200 to find the probability P(<=1)

$\frac{50}{200}=\frac{1}{4}=0.25$

Therefore, the probability is 0.25.