In a large school district, it is known that 25% of all students entering kindergarten are already reading. A simple random sample of 10 new kindergarteners is drawn. What is the probability that fewer than three of them are able to read?

Q: 19. Suppose mass-produced needles are packed in boxes of 1000. It is believed that 1 needle in 2000…

A:

Q: At one private college, 34% of students are business majors. Suppose that 260 students are randomly…

A: The probability that the proportion of business students in the sample differs from the population…

Q: (a) If a random sample of 50 one-bedroom apartments is selected, what is the probability that the…

A:

Q: 2. The height of grade 1 pupils are approximately normally distributed with u= 45 inches and a=2. a.…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: Suppose 48% of the banks in Switzerland are private organizations.   If a sample of 484 banks is…

A: When the sample size is large enough we can use the normal approximation by virtue of the Central…

Q: Example 10: A survey from Teenage Research Unlimited (Northbrook, Illinois) found that 30% of…

A: Given: n=5p=30%=0.3q=1-p=1-0.3=0.7

Q: 2. Approximately 6% of the male population is color-blind. If a random sample of 250 male adults is…

A: Given that  n= 250 , p=6%=0.6 , q=1-p=1-0.06=0.94

Q: Suppose an actual census showed that 18.4% of the households in California have incomes in excess of…

A: It is given that n =750 and p =0.184.

Q: . What is the probability that the amount of liquid hand soap consumed in a month per secondary…

A:

Q: 17. What is the probability that a randomly selected person would be a Female ana had a Negative…

A: Provided information is, a market research study is being conducted to determine if a product…

Q: (a) Suppose one of these people is selected at random. Compute the probability that the person…

A: HERE AS PER GUIDELINES I HAVE CALCULATED 3 SUBPARTS  HERE USE GIVEN DATA TABLE and basic probability…

Q: 4) According to a recent study, 1 in every 8 women has been a victim of domestic abuse at some point…

A: Given, no of women= 25 1 in every 8 women is abused, therefore p=1/8 = 0.125 Let X be the random…

Q: The CEO of TikTok thinks that 75% of users are under the age of 30. A simple random sample of 100…

A:

Q: i. Suppose in a district grade 1 through grade 5, 60 percent of the population favor a particular…

A: we are suppose to answer three sub parts .

Q: What is the probability of randomly selecting someone who is Female and has a New product? New…

A: From the provided information,   New product  Old product Totals Male 27 11 38…

Q: 22. Suppose 58% of American singers are Grammy award winners. If a random sample of size 764 is…

A: the pdf of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: iii Suppose that at a Goil Filling Station, 40% of drivers check their oil levels, 70% check tyre…

A:

Q: The guidance counselor of a large high school reports that 48.5% of Junior Pre-Calculus students…

A: Let S denote the students sign up to take AP statistics next year and C denotes the students sign up…

Q: 15% of adults in the United States do not make New Year's resolutions. Suppose a random sample of…

A: 15% of adults in the United States do not make New Year's resolutions. Suppose a random sample of…

Q: It is estimated that 30% of Canadians with age between 60 and 65 had smoked for a long period of…

A:

Q: 3.A quality control expert at a large factory estimates that 10% of all the batteries produced at…

A:

Q: i. Suppose in a district grade 1 through grade 5, 60 percent of the population favor a particular…

A: Hey, since there are multiple subparts posted, we will answer the first three subparts. If you want…

Q: Imagine a woman has a positive mammogram. What is the probability that she has breast cancer?

A: Here use Bayes rule and tree diagram  Define events as follows  C = women have breast cancer  T =…

Q: (a) Before 1918, in a random sample of 11 wolves spotted in the region, what is the probability that…

A: i)The probability that 8 or more were male is given by P(X≥8) = 0.1911 Excel formula used:…

Q: Researchers suggest that 8.5% of females in Scotland have red hair. Approximately 10% of Scottish…

A: Consider that event A denotes the female population and event B denotes the people with red hair.

Q: 6. Suppose that 25% of all subscribers to a business magazine earn an income of more than $75,000.…

A: Given that  n=20 , p=25%=0.25 , q=1-p=1-0.25=0.75 p=Probability of income more than $75000…

Q: At a certain university, 4% of men are over 6 feet tall and 1% of women are over 6 feet tall. The…

A: Let the sequence Ai of mutually exclusive and exhaustive event in a sample space S such that…

Q: 3) Medical researchers are studying the relationship between metacarpal fractures and time spent…

A: We will find the probability from above table

Q: 1) The number of cracks in a 105-km expressway is 30. What is the probability that there would be no…

A: Solution.

Q: (iii) If there are a total of 100 concrete piles, what is the probability that 80 concrete piles are…

A: Binomial distribution, and standard normal dist are applicable to solve the (iii) part

Q: 11,12,13

A: 11. Consider X be a random variable which follows normal distribution indicates the number of…

Q: 10.A car insurance company has determined that 9% of all drivers were involved in a car accident…

A: Given: Probability of success (p) = 9% = 0.09 Number of drivers (n) = 14 Consider, X be the random…

Q: 3) Suppose that among employed women, 25% have never been married. Suppose we randomly sample women…

A: Given that, among employed women, 25% have never been married p=0.25 We have to find probability…

Q: 10. A movie theatre estimated that when a random ticket holder is VIP, there is a 1/7 chance that…

A: Given information: PPerson will be over 30 years old=17PWomen=25

Q: #01. In a recent year, about 22% of Americans 18 years and older are single. What is the probability…

A: The mean of the binomial random variable obtained by the formula μ=np, where (n) is the number of…

Q: or the fiscal year​ 2007, a tax authority audited 1.74​% of individual tax returns with income of​…

A: It is given that the probability that a randomly selected individual for audit will have income…

Q: 2. The probabilities of a machine manufacturing 0, 1, 2, 3, 4, and 5 defective parts in one day are…

A: Given that  Probability mass function of X is  x 0 1 2 3 4 5 P(X=x) 0.75 0.17 0.04 0.025 0.010…

Q: 16. What is the probability that a randomly selected male would have a Positive Reaction to this…

A: Given,   positive reaction neutral reaction negative reaction Male 310 200 150 Female 450 550…

Q: Assuming no other ethnicity group is represented, what is the probability of a death row inmate…

A: A distribution of probability of race and/or ethnicity of the inmates is:   African American…

Q: c. What is the probability that in a random sample of 2, at least one has been abroad?

A: (C) Let X be the random variable from binomial distribution with probability of people have been…

Q: What is the probability that a randomly selected competitor reacted in 0.3 to 0.7 seconds or was not…

A: Since , the table given below ,   Less than 0.3 seconds 0.3 to 0.7 seconds Total Male 14 7 21…

Q: 4. The salaries of UConn professors is approximately normally distributed. Suppose you know that 33…

A: Given: P (X < 80000) = 0.33 P (X > 120000)= 0.33 X is normally distributed

Q: Suppose that it is known that 45% of eighteen-year-olds in a particular city do not have a driver's…

A:

Q: 21 Suppose it is known that 40% of Americans own an iPhone. If a random sample of 60 Americans were…

A:

Q: 3.12 In a city of 180,000 people there are 20,000 legal im- migrants from Latin America. What is the…

A: Probability: Probability is a chance factor that occurs at every outcome of a random experiment.…

Q: Suppose 49% of the registered voters in a country are Republican.   If a sample of 701 voters is…

A: Given information: It was stated that 49% of the registered voters in a country are Republican. The…

Q: The Nationwide Motel Company has determined that 70 percent of all calls for motel reservations…

A:

Q: 1. In a factory that produces pieces of ready-made concrete, if the percentage of production of…

A: Givenp=0.6n=5x~Binomial(n=5,p=0.6)P(X=x)=Cxn px (1-p)n-x  ; x=0,1...,n

Q: 2. A shipment of twelve smartphones contains seven with cracked screens. If sold in a random order,…

A: Given, Total no of smart phones in shipment = 12 Total no of smart phones with cracked screens = 7…

Q: 4/ A public health researcher examines the medical records of a group of 837 men who died in 1998…

A: We first make a table using the given data   died from heart disease did not die from heart…

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.