Martin kept track of the number of times he had to flip a coin before it landed tails up.

number of flips to land tails up
a dot plot going from 1 to 5. 1 has 1 dot, 2 has 4 dots, 3 has 2 dots, 4 has 6 dots, and 5 has 5 dots.

which is a true statement about the dot plot?
six times it took 4 flips of the coin to land tails up.
twice it took 4 flips of the coin to land tails up.
it took 6 flips of the coin to land tails up more often than any other number of flips.
the greatest number of flips it took to land tails up was 6.

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?

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?

Full year - williamshow many square inches are in 60 square feet? 5 square inches72 square inches720 square inche8.640 square inches