1-A company that makes cell phone batteries randomly selected 25 batteries from the production line.The probability of a defective battery was found to be 12%.

Calculate the probability of having at most 7 defective batteries.

Include5 decimal placesin your answer.

2-A company that makes cell phone batteries randomly selected 25 batteries from the production line.The probability of a defective battery was found to be 12%.

Calculate the probability of having at most 19non-defectivebatteries.

Include 5 decimal places in your answer.

3-A small Hamilton company sampled 20 of its employees and determined that 56% of them called in sick last year on the Canada Day long weekend.Calculate the probability exactly 12 people from a sample of 20 employees will call in sick this year.

Include 5 decimal places in your answer.

4-A random sample of 100 Ontario high school students revealedthat 56% of them check their Instagram account daily.

Calculate the probability that at least55 Ontario high school students check Instagram daily.

Include 5 decimal places in your answer.