A local ice skating rink wishes to determine the age of its customers. The ages of customers are summarized in the relative frequency table below. What is the cumulative relative frequency of patrons, aged 47 or younger?

Provide your answer below:

Customer Age Relative Frequency Cumulative Frequency
$8-17$ 0.35 0.35
$18-27$ 0.25 0.60
$28-37$ 0.15 0.75
$38-47$ 0.10

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?