USA Today reported that about 20% of all people in the United States are illiterate. Suppose you take seven people at random off a city street.  (C) how many people would you need to interview to be 87% sure that atleast seven of these people can read and write?

Q: Last year, Groton, Georgia, had 512 burglaries. The police chief wants to know the average economic…

A: Given, the average economic loss associated with burglaries in Groton. n=10 a). The required sample…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: A small-town mechanic says that 8% his customers come in for an oil change. When  1000 samples were…

A: Target population means, the set of elements that we want to know more about

Q: If a study was counting cells on a petri dish and listed an of n=25, what would the df be for the…

A:

Q: A coach is interested in how many cartwheels the average college freshmen at his university can do.…

A: The coach is interested in how many cartwheels the average college freshman can do at his…

Q: If you use the Internet, have you ever paid to access or download music? This was one of the…

A: The sample size = 1003 From the sample, the information we have, No. of adults do not use internet =…

Q: in a random sample of 500 police officers how many have an annual salary of at least $58,750

A: Let X denote the no.of police officer salaries and it follows normal distribution with mean of…

Q: A small ice cream parlor has had great success over the past several years and is interested in…

A: Given information: Number of customers randomly selected in the sample, n = 56 Number of customers…

Q: In 2010, the Physicians Foundation conducted a survey of physicians’ attitude about health care…

A: The survey was sent to total 100,000 physicians.

Q: - How many students are playing football? . Which sports obtained the highest number of students…

A: The histogram for the distribution of Favourite School sport is given. Note : Since you have asked…

Q: A physicist intended to select three out of the rainbow colour in an experiment, what are the…

A: Given: We need to select three out of the rainbow colors .

Q: Ways to pick 15 people to be part of an experiment out of 50 volunteers?

A: The difference between permutations and combinations is that in permutations the order of elements…

Q: 2. How many different letter arrangements can be made from the letters in the word of STATISTICS?

A: Number of letters in the word STATISTICS = 10 Number of S's = 3 Number of T's = 3 Number of I's = 2…

Q: In a random sample of 80 Americans, 44 wished that they were rich. In a random sample of 90…

A: Given p^1=4480=0.55p^2=4190=0.45Level of significance=0.01 Null and alternate hypothesis is given…

Q: Normal Amount of Food at Lunch/ Yes:NO Students Hours of sleep S1 S2 7.5 Yes 7 Yes S3 7 No S4 8 Yes…

A: 23 Stuedents answered two Question  - How many hours of sleep did you get last night?- How much did…

Q: According to a published study, 1 in every 9 men has been involved in a minor traffic accident.…

A: Given: Sample size (n) = 25 Probability of minor accident =19

Q: Are most student government leaders extroverts? According to Myers-Briggs estimates, about 82% of…

A: As per our guideline we can answer only 3 sub parts

Q: If, in a random sample of 250 items, 55 are defective, what is the sample proportion of defective…

A:

Q: 60% of the voters favor Ms. Stein. If 250 voters are chosen at random, what is the expected number…

A: We have given that  p = 60% = 0.60 n = 250 X ~ B( 250, 0.60 ) In Binomial distribution, Expected…

Q: How many outcomes would there be in the sample space for flipping 6 coins?

A:

Q: A manufacturer of automobile tires reported that among a shipment of 600 sent to a local…

A: Given that 20 are blemished out of 600. So the probability of blemished is= 20/600= 1/30

Q: A pollster randomly selected 4 of 10 available people. How many different groups of 4 are possible?

A: Given,   A pollster randomly selected 4 of 10 available people.   The objective is to find how many…

Q: At a local community college, five statistics classes are randomly selected out of 20 and all of the…

A: In the given situation, we need to identify which sampling method is used.

Q: Your town does a study and finds that 3 in 5 dogs have licenses. If there are 250 dogs in town, how…

A: In the given study it has been found that 3 in 5 dogs have licenses. The probability that the dogs…

Q: In the entire group of first-year statistics students, half own a calculator (h), and the rest don’t…

A: Given: students who half own a calculator be h The students who don't own a calculator be d

Q: Give a sample problem involving "probability of a complement"

A: Given: The objective is to provide a sample problem for "probability of a complement".

Q: - In a survey of 500 students of a college, it liked watching hockey and 62% liked watc

A: Given, in a survey of 500 students of a college, it was found that 49% liked watching football, 53%…

Q: Harry has 4 coins. If Harry flips all the coins at once, how large is the sample space?

A: A coin has two sides, head, and tail.  So for each coin, there are 2 possible outcomes.  There are 4…

Q: a study with 5 groups, 6 samples each group, what are the degrees of freedom for the total, group,…

A: Given: Number of groups (k) = 5 Number of samples each group (n)=6

Q: If an experiment connsist of throwing a die and writing a letter from A-Z, how many elements will…

A: Given, An experiment consists of throwing a die and writing a letter from A-Z There are 6 possible…

Q: How many distinct permutations are there in the word STATISTICS?

A: The total number of alphabets in the word STATISTICS is 10.   Based on alphabets. No, of S's n1 = 3…

Q: Credit Card Survey In an AARP Bulletin survey, 1019 different adults were randomly selected without…

A: Conditions for a binomial distribution:There are a fixed number of trials (n).Each trial must be…

Q: re residents (if any) must I ask, given the fact that (somehow) I know that 62 percent of all…

A: Given: Sample size, n = 32 Probability, p = 62100=0.62 Here the distribution is binomial and for a…

Q: In a high school with 1,500 students, which would be the best way to select a random sample of…

A: The data asked to collect is bout music preferences.

Q: If you selected a sample of n = 35 from a population whose μ = 56 and σ= 12, what would you expect…

A: Given information: The sample size is, n= 35. The mean of the population is, μ=56. The standard…

Q: A machine puts out 10 defective units in a sample of 200 units. After the machine is overhauled it…

A:

Q: Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 300…

A: Part a:          x = 300         n = 450         p' = 300/450 = 0.6667   Part b:  X is the number of…

Q: Agnes Hammer is a senior majoring in management science. She has been interviewing with several…

A: mean and standard deviation: Enter the values of salaries in columns A of an excel.  The mean is…

Q: In a random sample of 120 killer bees, how many would you expect to be agitated by the color GREEN?…

A: Number of killer bees are expected to be agitated by color green = (% of bees agitated by color…

Q: asked to guess the average weight of the six watermelons by taking a random sample without…

A: Here use sampling distribution without replacement

Q: 4) In Toronto, Canada, 55% of people pass the drivers' road test. Suppose that 100 people take the…

A:

Q: Canvas generates a random exam by picking 7 questions from a bank of 10 questions. How many…

A: Here 10 Questions  We have to Pick 7 of them for exam

Q: It's all about COMBINATION - From a population of 50 households, in how many ways can a researcher…

A: The population is given as 50 and 10 need to be selected. The total number of ways of selecting 10…

Q: Canvas generates a random exam by picking 6 questions from a bank of 9 questions. How many different…

A: Given : Question bank contain 9 questions .  n = 9 Picking 6 question from question bank for…

Q: How many outcomes would there be in the sample space for rolling 5 dice and flipping 4 coins?

A: When a coin is flipped there are two possible outcomes heads (H) and tails (T). When four coins are…

Q: At a football game, 40 fans were randomly surveyed. Of the sampled fans, 6 named Daren as the best…

A: given out of 40 fans, 6 fans  named Daren as the best player to find from 12000 fans how many say…

Q: A factory that makes gaming systems selects 100 random systems to check for defects. They find that…

A: A factory that makes gaming system select 100 random systems. The 3 gaming system are defective. The…

Q: d. There are exactly 6 people in the sample who are NOT afraid of being alone at night.

A: Given : 50% of the Americans are afraid of being alone in a house at night ,  which means Americans…

Q: You are asked to guess the average weight of the six watermelons by taking a random sample without…

A: Here drawing 2 sample without replacement  So Total possible sample 6C2 = 15

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.