Sydney has index cards numbered 1 through 10 and determines that the probability of drawing a 4 is 3 out of 10. If she draws cards 100 times, how many times can she expect to draw a 4?

Step-by-step explanation:

In this problem, we are going to find the probability of obtaining/drawing a 4 after 100 trials

Given that the probability of drawing a 4 out of 10 trials  is 3/10

therefore the probability of drawing a 4 out of after 100 trials

= (3/10)*100

= 3*10

= 30

Hence the probability of drawing 4 after 100 trials are 30 times