Question

josephine noticed that out of 10 e - mails she received, 7 were advertisements. what can she predict about the number of advertisements she will receive in the next 100 e - mails? she will receive 7 advertisements. she will receive 10 advertisements. she will receive 70 advertisements. she will receive 90 advertisements.

Explanation:

Step1: Calculate the proportion of ads

The proportion of ads in the 10 - email sample is $\frac{7}{10}$.

Step2: Predict for 100 emails

Multiply the proportion by 100. So, the predicted number of ads in 100 emails is $\frac{7}{10}\times100 = 70$.

Answer:

She will receive 70 advertisements.