A university administrator expects that 25% of students in a core course will receive an A. He looks at the grades assigned to 60 students. Determine the probability that the proportion of students who receive an A is between 0.25 and 0.30?

Q: The average number of matches in which Galatasaray football team's football matches were postponed…

A: we have given that  the number of matches follow the Poisson distribution with parameter(lambda)= 5

Q: Given that a random person just tested positive, determine the probability of having this illness.

A: Here use tree diagram

Q: What is the probability that the accident occurred on either the evening or the graveyard shift?

A: It is given that P(evening) = (6 + 25)% = 31% = 0.31 P(graveyard) = (2 + 30)% = 32% = 0.32

Q: (d) What is the probability that a random sample of 50 students spends an average of $1450 to $1600…

A: 73. D Let x¯ is defined as the average on-campus housing cost for a semester at university which…

Q: The auto parts department of an automotive dealership sends out a mean of 3.6 special orders daily.…

A: Consider X be random variable which follows Poisson distribution indicating the number of special…

Q: According to a research​ corporation, 46​% of women in a particular region suffer from holiday​…

A:

Q: (d) Given that a car accident was caused by speeding, calculate the probability that the driver was…

A: Solution According to guideline we solve three subpart

Q: The number of telephone calls coming into Grace Floral Shop to place orders averages 3 per minute…

A: Let X be the no. of phone calls. μ=3 per minute X~Poisson3

Q: The approach, to develop the binomial probability distribution, begins with the:

A: For binomial distribution, each trial has to be independent of each other and each trial must have…

Q: After rolling a fair twenty-sided die 200 times, the observed (or experimental) probability of…

A: For a 20-sided fair die, the probability of obtaining a 20 is 1/20 = 0.05.

Q: Statistics Canada data for 2011 shows that the number of residents in Edmonton between the ages 20…

A: The total number of residents between the ages 20 and 34 was 159445.

Q: Although studies continue to show diabetes leads to significant health problems, 20% of adults in…

A: Introduction: Denote X as the number of sampled adults who have diabetes. Assume that the n = 250…

Q: At Roberta's cafe half of her regular customers order her famous low-fat chicken sandwich. The…

A: Consider the following events A : someone regularly ordered the sandwich. B : someone losing weight.…

Q: What is the probability that an adult has a high BMI? What is the probability that an adult lives in…

A: ----------------------------------------------------------------------------------------------------…

Q: A poll showed that 50% of Americans say they believe that life exists elsewhere in the galaxy. What…

A: here given , A poll showed that 50% of Americans say they believe that life exists elsewhere in the…

Q: According to a 2009 Reader's Digest article, people throw away about 14% of what they buy at the…

A: Solution: It is given that people throw away about 14% of what they buy at the grocery store. So,…

Q: The mean number of patients admitted per day to the emergency room of a small hospital is 1. If, on…

A:

Q: A hotel manager calculates that 12% of the hotel rooms are booked. If the manager is right, what…

A: From the given information,P be the probability that hotel rooms are booked = 0.12.Sample size (n)…

Q: According to govemment data, the probability that a woman between the ages of 25 and 29 was never…

A:

Q: A statistical analysis of 1,000 long-distance telephone calls made from the headquarters of the…

A:

Q: What is the probability that a randomly selected friend tasted peaches and preferred non- organic?

A: The data is given by   Organic Non-organic Total Apples 4 3 7 Peaches 4 1 5 Toral 8 4 12

Q: A film distribution manager calculates that 7 % of the films released are flops. If the manager is…

A: Where.

Q: A news report stated that 65% of vehicles sold nationally were SUVs. A random sample of 100 vehicles…

A: Given info: Here, n=100, p=0.65.

Q: According to a study conducted by the Gallup organization, the proportion of Americans who are…

A: It is an importance stance in probability distribution . Binomial distribution is a discrete…

Q: According to a survey, 10% of Americans are afraid to fly. Suppose 1100 Americans are sampled. a)…

A: (a) Obtain the probability that 121 or more Americans in the survey are afraid to fly. The…

Q: A school survey found that 7 out of 30 students walk to school. If two students are selected at…

A:

Q: Find the "mean" of the given probability distribution.

A: Solution: 15. From the given information, the probability distribution of x is

Q: According to a study conducted by the a public health school, a child seated in the front seat who…

A: Let the events,A: Airbag deploys during an accident,K: Child is killed.It is given that airbags…

Q: seventy-five percent of the students graduating from high school in a small will attend college. for…

A: A.   Z-score for proportion:

Q: (a) How many percent of the tubes are classified as A Grade and B Grade respectively? (b) Find the…

A: Air ball trap, X ~ Poisson(1.5)  A grade = no air ball trapped.  B grade = 1 or 2 air balls trapped.

Q: What is the probability that a randomly selected representative votes yes on El Salvador aid? Round…

A: We have to find out the probability that a randomly selected representative votes yes on El…

Q: A survey was conducted to determine the proportion of Grade 11 students who engage in under-age…

A: We have given that p = 0.70 n = 100 We have to calculate  P(x> 0.65)

Q: Consider the case where the predetermined average number of bus arrivals at the Cubao Station is 6…

A: As given, the average number of bus arrivals at the Cubao Station is 6 per 15-minute period. This…

Q: A recent survey found that​ 70% of all adults over 50 wear sunglasses for driving. In a random…

A: Given that in a recent survey found that​ 70% of all adults over 50 wear sunglasses for driving.…

Q: The National Association of Realtors estimates that 23% of all homes purchased in 2004 were…

A:

Q: (a) If Tommy has missed a shot, what is the probability that he will score two shots later? (b) In…

A: a ] Here we will make transition probability matrix P : Where Row 1 is representing the…

Q: According to a study conducted by the a public health school, a child seated in the front seat who…

A:

Q: According to a poll of​ adults, about 40​% work during their summer vacation. Assume that the true…

A: From the given information, Sample size (n) = 500 Probability of success (p) or adult work during…

Q: What is the probability that a shopper will check prices online but not use online coupons or a…

A: Venn diagram uses circle to represent a set. The overlapping portions of circles represents the…

Q: a. What is the probability that it would take more than 4 minutes to reach the accident? b. What is…

A: Given: The function of reach of fire service response team is, fY=y=115y+1          0≤y≤319y-3…

Q: According to a survey, 10% of Americans are afraid to fly. Suppose 1100 Americans are sampled. a)…

A: (a). Find the probability that 121 or more Americans in the survey are afraid to fly: It is given…

Q: Find the mean of the following probability distribution?

A: Here, we have given the probability distribution of x as below: x 0 1 2 3 4 P(x) 0.0666 0.1178…

Q: A Gallup poll found that 73.2% of people in the US believe in hell. What is the probability that a…

A: Given that  A Gallup poll found that 73.2% of people in the US believe in hell  P(Believe in hell) =…

Q: d) If gender does not have any effect on employment, calculate the probability that the graduate…

A: The contingency table is   Female Males Total Employed 30 10 40 Unemployed 20 40 60 Total…

Q: What is the probability of it raining, P(B), if it has started snowing? Report P(B), given that it…

A: From the given information, There is a 60% chance of snow. That is, P(A)=0.60 There is a chance of…

Q: A researcher believes that 8 % of pet dogs in Europe are Labradors. If the researcher is right, what…

A: Where,

Q: b) Andrew Whittaker, computer center manager, reports that his computer system experienced 25…

A: Solution

Q: (a) What is the probability that a sampled woman has four children? Round your answer to four…

A: Given data is  No.of children No.of women 0 12598 1 7467 2 11269 3 7038 4 3782 5 1820…