It is an exponential distributed random variable with an average of 45 minutes to repair a machine. A repair period, a) Find the probability of exceeding 2 hours. b) If 3 repairs are chosen randomly, find the probability that only 2 of them last between 1 hour and 3 hours.

Q: Assume that when adults with smartphones are randomly​ selected, 52​% use them in meetings or…

A: Given,n=5p=0.52Let X=no.of adults use their smartphonesin meetings or classes.X~Binomial(n=5 ,…

Q: Assume that when adults with smartphones are randomly​ selected,45​%use them in meetings or classes.…

A: Obtain the probability that exactly 3 of them use their smart phones in meetings or classes. The…

Q: 2 When a person takes pennies to a coin counting machine, the average number of pennies inserted is…

A:

Q: Assume that when adults are randomly selevted, 21% do not require vision correction Q. If 20 adults…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 59% use them in meetings or…

A: Given, p=0.59 and n=11 Let X be the random number which denotes the number of adults using…

Q: An urn contains 3 green balls, 2 blue balls, and 4 red balls. in a random sample of 5 balls, find…

A:

Q: Assume that when adults with smartphones are randomly selected, 46% use them in meetings or classes.…

A:

Q: A group of students consists of 5 females and 10 males. If 8 students are to be selected at random…

A: We have to use classical probability definition to find the probability.

Q: Assume that when adults with smartphones are randomly​ selected, 51​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 52​% use them in meetings or…

A: Given that adults with smartphones are randomly​ selected, 52​% use them in meetings or classes.…

Q: Assume that the team plays 7 games. If the team is equally likely to win as to lose each game, what…

A: Assume that, W represents win and L represents loss.

Q: If 10 cards are to be chosen at random (without replacement) from an ordinary deck of 52 cards, find…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 55​% use them in meetings or…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: Assume that when adults with smartphones are randomly selected, 46% use them in meetings or classes.…

A: Given that  The smart phones are randomly selected. Adults Use them in meetings or classes = 46%…

Q: Assume that when adults with smartphones are randomly​ selected, 53​% use them in meetings or…

A:

Q: The unemployment rate in a city is 13% . If 7 people from the city are sampled at random, find the…

A: Solution: Let X be the number are unemployed and n be the sample number of people. From the given…

Q: A manufacturing process that produces electron tubes is known to have a 10% defective rate. Suppose…

A: Solution : here X is random variable tube is defective.       X~Binomial(n=15 , p=0.1) i.e. X…

Q: A hospital switchboard receives an average of 4 emergency calls in 10 min. interval. What is the…

A: The average number of calls in 10 minutes is 4.

Q: Assume that when adults with smartphones are randomly​ selected,53​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 43​% use them in meetings or…

A: According to the provided information, p=0.43 n=10

Q: Assume that when adults with smartphones are randomly​ selected, 56​% use them in meetings or…

A: Consider, X be a random variable that represents the number of adults who uses the smartphone which…

Q: What is the probability of getting exactly 10 customers during an 8-minute interval?

A:

Q: Assume that when adults with smartphones are randomly​ selected, 57​% use them in meetings or…

A: Let X be the number of adults use their smartphones in meetings or classes which follows binomial…

Q: Assume that when adults with smartphones are randomly​ selected, 52​% use them in meetings or…

A: We have to  find the probability that at least 6 of them use their smartphones in meetings or…

Q: A computer system uses 4 digits numerical (from 0 to 9) passwords to provide access for resources,…

A:

Q: A cookie is selected at random from basket containing 21 sugar cookies, 18 peanut butter cookies, 3…

A: Given that there are 21 sugar cookies, 18 peanut butter cookies, 3 mint cookies, and 28 caramel…

Q: An urn contains 5 green balls, 2 blue balls, and 2 red balls. In a random sample of 5 balls, find…

A: Number of green balls is 5. Number of blue ball is 2. Number of red ball is 2.

Q: Assume that when adults with smartphones are randomly​ selected, 51​% use them in meetings or…

A:

Q: Suppose a certain retail store has customers whose ages are normally distributed such that µ=37.5…

A: givenμ=37.5σ=7.6

Q: Assume that when adults with smartphones are randomly​ selected, 58​% use them in meetings or…

A: Given, Assume that when adults with smartphones are randomly​ selected, 58​% use them in meetings or…

Q: Assume that the team plays 6 games. If the team is equally likely to win as to lose each game, what…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 49​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 59% use them in meetings or…

A: From the provided information, 59% of adults use smartphones in meeting or classes that is (p) =…

Q: Assume that when adults with smartphones are randomly​ selected, 42​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly​ selected 36% use them in meetings or classes.…

A: Probability that adults use smart phones in meeting or classes (p) = 36% = 0.36 Number of adults…

Q: An urn contains 3 green balls, 2 blue balls, and 4 red balls. In a random sample of 5 balls, find…

A:

Q: A manufacturing process has a​ 70% yield, meaning that​ 70% of the products are acceptable and​ 30%…

A: Obtain the probability that all of them are acceptable.   The probability that all of them are…

Q: Assume that when adults with smartphones are randomly​ selected, 51​% use them in meetings or…

A:

Q: Assume that when adults with smartphones are randomly selected, 52% use them in meetings or classes.…

A: Given that  Proportion of people use in meetings or classes = 52%  p = 0.52 (1-p) = (1-0.52) = 0.48…

Q: Assume that when adults with smartphones are randomly​ selected, 51​% use them in meetings or…

A: From the given information p = 0.51, x= 2 and n = 5. The probability mass function of the binomial…

Q: A recent study shows that babies who weigh less than 5.5 pounds at birth are 40% more likely to…

A:

Q: Assume that when adults with smartphones are randomly selected, 55% use them in meetings or classes.…

A:

Q: Assume that when adults with smartphones are randomly​ selected, 57​% use them in meetings or…

A: Probability that adults use their smartphones in meetings or classes is , p = 57% = 0.57 Sample…

Q: 71% of all bald eagles survive their first year of life. If 40 bald eagles are randomly selected,…

A: Answer:Given that:p=0.71    ,n=40now will use Binomial probability P(X=x)=nx*Px*(1–P)n–x,where…

Q: Assume that when adults with smartphones are randomly selected, 62% use them in meetings or classes.…

A: The formula for binomial distribution is nxpx(1-p)n-x Given information is: p=0.62 n=5 x=3

Q: If 8 adults are randomly selected, the probability that exactly 2 of them do not require a vision…

A: here use binomial distribution Each trial is independent Finite number of trial There are two…

Q: Assume that when adults with smartphones are randomly selected , 61% use them in meetings or…

A: From the given information, The percentage of smartphones in meetings or classes is 61% and there…

Q: Find the probability that exactly four defectives are found

A: Given: A manufacturing process has 10% defective rate.  Random sample of 15 tubes

Q: Suppose a certain retail store has customers whose ages are normally distributed such that µ=37.5…

A: We have to find the probability that a randomly chosen customer is more than 48 years old..

Q: Assume that when adults with smartphones are randomly selected, 36% use them in meetings or classes.…

A: The probability that exactly 5 of them use their smartphones in meetings or classes is obtained…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.