task 1 explain how to estimate without calculator how many digits 2^2020 has    task 2         Two women met 20 years after school.         The first asked -- how many kids do you have?          The second answered -- 2.         Is at least one of them is a boy? - Yes.         Question: What is the probability that the other kid is a boy too?

Q: which events on the timeline directly led to an increase in death rates

A: Events on the timeline directly led to an increase in death rates:

Q: A study indicates that 67% of students have have a laptop. You randomly sample 7 students. Find the…

A: Given that, The random variable X students have a laptop The probability of success is 0.67 p=0.67…

Q: A researcher knows that number of people having a rare gene is on average 0.5 per  1000 people. Find…

A: Given that  The number of people having a rare gene is on average per 1000 people = 0.5 The number…

Q: A group of people were asked if some people see the future in their dreams. 110 responded "Yes", and…

A:

Q: An unfair coin is tossed 14 times.  This coin is known to come up heads 60% of the time and tails…

A: Here, n = 14, p = 0.40, q = 0.60.

Q: If the probability that an event does no occur is 0.3 determine the probability that the event…

A:

Q: If the probability that a vaccine you took will protect you from getting the flu is 0.972, what is…

A: It is given that the probability that a vaccine will protect a person from getting the flu is 0.972.

Q: Suppose​ 12% of Americans smoke. If we randomly select 10​ Americans, what is the probability that…

A: Consider X is a random variable that follows binomial distribution with the sample size, n equals to…

Q: If the probability of winning a contest is 0.02, what is the probability of NOT winning the contest?…

A: Let say event A is the winning a contest . Given, the probability of winning a contest is 0.02. That…

Q: Kiara sets up a passcode on her tablet, which allows only six-digit codes. She has heard that it's…

A: Kiara sets up a pass-code on her tablet, which allows only six-digit codes. She has heard that it's…

Q: If the probability of an event not occurring is 0.68, what is the probability the event will occur?…

A: P(an event not occuring)=0.68

Q: A certain drug test is accurate 97% of the time. If the test is given to 2200 people who have not…

A: Solution-: Given: n=2200,q=0.97 (Or 97%) We want to find P(at most 70 will test positive)=?

Q: Assume that the probability of a toss of an unfair coin resulting in heads is known to be 0.0062.…

A: Solution-: Given: P(an unfair coin resulting in heads)=0.0062 We want to find P(Toss of the same…

Q: If the probability that a vaccine you took will protect you from getting the flu is 0.932, what is…

A:

Q: A group of people were asked if they had run a red light in the last year. The number of people that…

A: A group of people were asked if they had run a red light in the last year. The number of people that…

Q: Suppose that 54% of people own dogs. If you pick two people at random, what is the probability that…

A: The probability of this event is independent of each other of final probability will be the product…

Q: part 2

A:

Q: suppose that an average of 4 earthquakes occur in Kingston each decades. find the probability that…

A: Given,The average no.of earthquakes occur per each 10 years is 4.so, the average no.of  earthquakes…

Q: If the probability that a randomly chosen college student takes statistics is 0.34, then what is the…

A: The probability that a randomly chosen college student takes statistics is 0.34. The probability…

Q: The probability of winning the "grand prize" at a fortune spinning wheel is p=0.2. Assume you record…

A:

Q: A light bulb manufactoring plant makes LED bulbs. It is known the the average life is 10,000 hours.…

A: Consider X be the random variable which represents the life of the LED bulbs. X follows exponential…

Q: please solve

A: Step 1:Step 2: Step 3:Step 4:

Q: a typical day at a local popular maii, the number of shopliftersS caught by mail security fiuctuates…

A: λ=8.8

Q: A certain question on a test is answered correctly by 78% of the respondents. Estimate the…

A:

Q: You need two pieces of string at least 48 cm long for your next craft project. You have one piece of…

A: The total length of the string is 139. The total number of possible values is 139. The number of…

Q: Suppose that the probability that there is another pandemic in the next year is 40%. And suppose…

A: GivenProbability that there is pandomic in next year=40%=0.40Probability that there is a war with…

Q: Question #10Twelve percent of U.S. residents are in their thirties. Consider a group of six U.S.…

A: X: Number of . residents are in their thirtiesNown= number of residents in group=6p=P(in their…