a) It is known from past records that 10% of passengers arriving at Islamabad International Airport are not properly vaccinated against yellow fever. 8 passengers are randomly selected to check whether are vaccinated. What is the probability that 2 are not vaccinated?

Q: What is the probability of getting at least 7 heads when 20 coins are tossed?

A: Given that, 20 coins are tossed.

Q: 2. In a factory that produces pieces of ready-made concrete, if the percentage of producing…

A: Given,n=5p=0.6q=1-p=1-0.6=0.4X=no.of defective piecesX~Binomial (n=5 , p=0.6)P(X=x)=nx px qn-x    ;…

Q: In a study of blood donors, 125 were classified as group O and 195 had a classification other than…

A: The objective of this question is to find the probability that a blood donor will have group O…

Q: An insurance company needs to develop a new bankruptcy policy in a new city. It was observed an…

A:

Q: What is the probability that a randomly selected score exceeds 1170?

A: Let X be the SAT score ( for verbal and math).It is given that X has normal distribution with mean…

Q: 10 years ago, high levels of lead in blood put 83% of children at risk. Now only 8% of children are…

A: Introduction: Denote p as the true population proportion of children who were at risk 10 years ago,…

Q: A survey showed that 82% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their…

A: 82% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their eyesight. 19 adults…

Q: probability of drawing a heart card from a standard deck of playing cards?

A: there are 4 suits of cards, each suit have 13 cards

Q: A labor statistician claims that 6% of the labor forces will be laid off likely  to pandemic impact.…

A: Solution: According to the labor statistician's claim, 6% of the labor forces will be laid off…

Q: In a study done in my chicken coop, 82% of my birds enjoy eating earwimgs. Chose 7 at random. FIND…

A: The provided information are: Probability of success (p)  = 82% = 0.82 Number of birds chosen (n) =…

Q: manufacturer of aspirin claims that the proportion of headache sufferers who get relief with their…

A: Given data,Probability of success is p=63.8%=0.638If n=430P(X<58.4%)=?

Q: What is the probability that, in a simple random sample of 500 in the US, fewer than 30 have blood…

A:

Q: Let's say that 82% of people have Type O blood.  If 3 randomly selected people donate blood, what is…

A: Givenp=0.82n=3x~Binomial(n=3,p=0.82)P(X=x)=(nx)×px×(1-p)n-x  ; x=0,1,...,n

Q: In 2021, 500 teachers in GCPS were surveyed. 230 teachers surveyed were Science teachers, 200…

A: Given: N=500 N(S)= 230 N(M)=200  Half of the teachers teaching Math also teach a science subject.…

Q: The risk of a hematoma among alcoholics without cirrhosis of the liver is 24%. Suppose we observe 7…

A:

Q: A study shows that 46% of teachers have gone through a lot of stress since April, due to the…

A: We have to find out given probabiity..

Q: A manufacturer of aspirin claims that the proportion of headache sufferers who get relief with just…

A: Givenproportion(p)=0.634sample size(n)=430Mean(μp^)=p=0.634standard…

Q: It has been recorded that 40% of stores in a region successfully reach the annual sales record.…

A:

Q: Breast cancer occurs in 2% of all American women. Mammograms used to detect breast cancer typically…

A:

Q: A mortgage advisor sells on average 3.5 mortgages every two weeks. i. What is the probability that…

A: (i) Obtain the probability that they sell 5 mortgages in a two week period. The probability that…

Q: The probability that a randomly chosen student in a statistics class submits his/her homework on…

A: Given,n=50p=0.10q=1-0.10=0.9A random variable X~Binomial(n=50  ,  p=0.10)P(X=x)=Cx50 0.1x0.950-x…

Q: A survey showed that 7575​% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for…

A: AnswerThe sample size (n) = 22P = 75%   = 75/100    = 0.75

Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.