A website reports that 70% of its users are from outside a certain country, and 60% of its users logon the website every day. Suppose that for its users from inside the country, that 80% of them log onevery day. What is the probability that a person is from the country given that he logs on the websiteevery day? Has the probability that he is from the country increased or decreased with the additionalinformation?

Q: It is known that a certain basketball player will successfully make a free throw 90.71% of the time.…

A: From the given information,P = 90.71%= 0.9071So, q = 1- P = 1-0.9071 = 0.0929n = 11we have to find…

Q: If the student has 2 alarm clocks and they have a 13.4% failure rate, what is the probability that…

A: The failure rate of the alarm clock is 0.134.

Q: If 14% of active duty soldiers in the U.S. Army are women, find the probability that if four…

A: Let X represent the random variable   n=4 p=0.14   X~ Binomial (4, 0.14)

Q: A survey showed that 75% of adults need correction for their eyesight. If 8 adults are randomly…

A: Given that 75% of adults need correction for their eyesight. There are 8 adults in the study. Let us…

Q: Suppose that 30% of people own dogs. If you pick two people at random, what is the probability that…

A: Probability that people own a dog = 30% = 0.30

Q: Suppose that 21% of people own dogs. If you pick two people at random, what is the probability that…

A: According to the given information, we have Given that 21% of people own dogs. Sample size, n = 2

Q: If a seed is planted, it has a 95% chance of growing into a healthy plant. If 12 seeds are planted,…

A: Sample size, n = 12 Probability(grow) = 95% = 0.95

Q: Suppose that 21% of people own dogs. If you pick two people at random, what is the probability that…

A:

Q: If the probability that a randomly chosen college student is up to date on vaccines is 0.42, then…

A: The question is about probability Given : Prob. of a randomly chosen college stud. is up to date on…

Q: A survey shows that about 65% of all respondents chose to have dogs over cats. Suppose that 15…

A:

Q: According to the National Highway Traffic Safety Administration, 83% of Americans used seat belts…

A: In this question it has given that,Probability (that Americans use seat belt belts regularly) =…

Q: Data compiled by Berks County on the number of convicted shoplifters in 2019 revealed that 62% were…

A: Let M and F be the event represent that number of convicted shoplifter are male amd female with…

Q: According to TMUSS Quarterly (Totally Made-Up Sports Statistics) April 2017, the probability that…

A: Event A : have 3 or more sacks Event B : score touchdown on their first drive P(A) = 0.12P(A∩B) =…

Q: If a seed is planted, it has a 60% chance of growing into a healthy plant. If 12 seeds are planted,…

A: 60% chance of growing into a healthy plant i.e. Probability(grow) = 0.60 Probability(doesn't grow) =…

Q: According to TMUSS Quarterly (Totally Made-Up Sports Statistics) April 2017, the probability that…

A: Given that P(A)=0.12 P(B) =0.39 P(A and B) = 0.31

Q: Suppose that 44% of people own dogs. If you pick two people at random, what is the probability that…

A: Independent Events:   Any two events A and B are said to independent if the occurrence of the event…

Q: that Serena Williams’ probability of winning a final is her lifetime singles final winning…

A: Consider a random variable X which represent the number of failures before 2 success . X can be…

Q: An insurance company found that 16% of drivers were involved in a car accident last year. If 8…

A: Probability of drivers were involved in a car accident last year(p)=0.16sample size(n)=8Let "x" be…

Q: A recent survey shows that 60% of families regularly schedule family vacations for the month of…

A: Given, 60% of families regularly schedule family vacations for the month of April. Let X = number of…

Q: According to TMUSS Quarterly (Totally Made-Up Sports Statistics) April 2017, the probability that…

A: The question is about probability.Given :Probability of having 3 or more sacks in the game =…

Q: It is certain that a lacrosse goalie will successfully make a save 91.83% of the time. Suppose that…

A: The probability that a lacrosse goalie will successfully make a save of the time is 0.9183.A sample…

Q: Suppose that 40% of people own dogs. If you pick two people at random, what is the probability that…

A: Given that 40% of people own dogs.Let X be the number of people own dogs following binomial…

Q: According to TMUSS Quarterly (Totally Made-Up Sports Statistics) April 2017, the probability that…

A: Given data:   The given probability that the Tampa Bay Buccaneers defend three or more sacks in a…

Q: The National Centre for Health Statistics reported that of every 883 deaths in recent years, 24…

A: The objective of the question is to find out the probability that a particular death is due to an…

Q: An assembly line has two inspectors. The probability that the first inspector will miss a defective…

A: If the defective item passes both inspectors then that means that it was missed by the first…

Q: 1 Let ƒ(x)=x²e³² the value of — lim[ƒ(x)]¹* is: 1 a) b) c) 0 d) 1 e 1 -19 4e

A: First put value of f(x) in given limit then find the limit as in next step.

Q: According to TMUSS Quarterly (Totally Made-Up Sports Statistics) April 2017, the probability that…

A: Let us denote: The Tampa Bay Buccaneers will score a touchdown on their opening drive=A the Bucs…

Q: Suppose on a given day, there is a 43% chance Emily will forget her wallet when going to work. What…

A: Let x follows binomial distribution with parameters n = 10 and p = 0.43   The pdf of binomial…

Q: If one person is randomly selected from the group, what is the probability that this person does not…

A: The formula for the probability is,

Q: Suppose that 43% of people own dogs. If you pick two people at random, what is the probability that…

A: probability mass function of B.D is = f ( k ) = ( n  k ) p^k * ( 1- p) ^ n-kwhere       k = number…

Q: For a recent year, the Centers for Disease Control reported that the probability that a 50-yr-old…

A: Recall the following fact.

Q: Suppose a cruise ship returns to the United States from an overseas voyage. Unbeknownst to anyone, 4…

A: # let x be the nonof passenger having disease follow binomial distribution (n=20, p=1/150)  Then to…

Q: Suppose that the probability that a child living in an urban area in the US is obese is 20%. A…

A: Given:Number of children living in an urban area (n)=10Probability(P)=0.20Explanation:Let’s x is…

Q: Suppose on a given day, there is a 23% chance Emily will forget her wallet when going to work. What…

A: Introduction: Denote X as the random variable of interest here, which is the number of days that the…

Q: Suppose that 43% of people own dogs. If you pick two people at random, what is the probability that…

A:

Q: What is the probability that exactly 18 e-mails are spam

A: Let p be the probability that an email is spam. Given that p = 0.88 Let X denote the number of spam…

Q: If 14% of active duty soldiers in the U.S. Army are women, find the probability that if three…

A:

Q: Andrea did a survey in her statistics class and found that 18 students out of 25 use the library at…

A: Total number of students = 25Number of students uses library atleast twice aweek =18

Q: Suppose that 40% of people own dogs. If you pick two people at random, what is the probability that…

A: Here, n = 2 and p = 0.4.

Q: If a seed is planted, it has an 80% chance of growing into a healthy plant. If 12 seeds are planted,…

A: Given,n=12q=0.80p=1-qp=1-0.80=0.20Let X=no.of doesn't growX~Binomial (n=12   ,  p=0.20)P(X=x)=12x…

Q: If two people are chosen with replacement from the data, what is the probability that both are…

A: Given contingency table is :   Athletic Shoes Sandals Dress Shoes Other Total Men…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.