In a certain state, pickup trucks account for 28% of the state's registered vehicles. If 100 registered vehicles are selected at random, what is the expected number of pickup trucks? The expected number of pickup trucks is

Q: 6. If the expected value of the weight of a randomly selected person in an office building is 175,…

A: Solution: 6. Let X be the weight. From the given information, E(X)=175 and n=5.

Q: Of all the weld failures in a certain assembly, 85% of them occur in the weld metal itself, and the…

A: Random Variable: In probability theory, a random variable is a variable whose values depend on…

Q: In a certain state, pickup trucks account for 26% of the state's registered vehicles. If 300…

A: Let p denote the proportion of pickup trucks. Given that p = 0.26 Let X denotes number of pickup…

Q: A group of students consisting of 20 males and 20 females were selected to participate in a research…

A: The number of male students is 20 The number of female students is 20. The total number of students…

Q: The manager of a supermarket found that 72% of the shoppers who taste a free sample of a food item…

A: Let X= number of shoppers that will buy the item who taste a free sample Given that the probability…

Q: Consider a randomly selecting 4-cards from a standard 52-card deck. Let the random variable, X,…

A: Solution

Q: Suppose 3 ​quarters, 3 ​dimes, 9 ​nickels, and 6 pennies are in a box. One coin is selected at…

A: Using the given data we make a table: Coin(amount in cent) (xi) quarter(25) dime(10) Nickels(5)…

Q: A box contains 12 items out of which 4 are defective. A person selects 6 items from the box. Find…

A: Given that there are total 12 items and among them 4 are defective.  So (12-4)=8 are good…

Q: A manufacturing company performs a quality-control analysis on the ceramic tile it produces. Suppose…

A: The number of ways in which 3 tiles can be selected from a set of 22 tiles,…

Q: Fourteen items are to be sampled from a lot of 75. If more than one is defective, the lot will be…

A: Given information- Lot size, N = 75 Sample size, n = 14 We have given that if no. of defective is…

Q: In a highly academic suburban school system, 45% of the girls and 40% of the boys cake advanced…

A: Given that Girls enrolled in the high schools of the district = 2200 Boys enrolled in the high…

Q: c. Suppose that you take a random sample of 5,000 people from the U.S. population. Make a table that…

A: Given problem is :

Q: 3. At a major credit card bank, the percentages of people who historically apply for the Silver,…

A: (a) State the hypotheses.

Q: Ten items are to be sampled from a lot of 60. If more than one is defective, the lot will be…

A:

Q: If car purchase and weather on test drive were independent events, what would be the expected number…

A: First we want find out the total corresponding to row and column.   Sunny Cloudy Rainy Total…

Q: What is the expected frequency for a Male Shopper to regularly shop at a Grocery Chain?

A: HERE USE GIVEN CONTINGENCY TABLE   Grocery chain Discount store  Membership warehouse  Total…

Q: In a certain state, pickup trucks account for 25% of the state's registered vehicles. If 200…

A: Given problem Given that   In a certain state, pickup trucks account for 25% of the state's…

Q: In tossing 4 fair​ coins, what is the expected number of​ heads?

A: Solution-: We given 4 fair coins. We find the expected number of heads?

Q: A local town is holding an election. Officials estimate that 45,000 people will vote if it does not…

A: Solution: From the given information, the probability of rain on Election Day is 0.27 and the…

Q: In a family with 2 children, excluding multiple births and assuming that a boy is as likely as a…

A: Let B=Boy and G=Girl Possible number of outcomes for two children are {BB, BG, GB, GG} Let x= number…

Q: In tossing 5 fair coins, what is the expected number of heads? Let the random variable X represent…

A:

Q: A company selling substandard drugs to developing countries sold 2,000,000 capsules with 60,000 of…

A: Provided information is, a company selling substandard drugs to developing countries sold 2,000,000…

Q: A retail distribution center ships out boxes and claims that their products may be 3% defective. A…

A: Solution: A retail distribution center claims that their products may be 3% defective.  It is given…

Q: In an 8 question multiple-choice test, each question has 5 choices and only one of those choices is…

A: Solution: Let X be the number of correct answers and n be the sample number of questions. From the…

Q: what is the expected number is successes

A: Solution:  Given information:  Let X represent the number of US female citizens.  p= 0.51…

Q: An urn contains four balls numbered 3, 5, 8, and 10. If a person selects a set of two balls at…

A: An urn contains four balls numbered 3, 5, 8, and 10 and a person selects a set of two balls at…

Q: What is the process for solving the following question?   Suppose 57% of the students at UNCG are…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: what is the expected number of tails?

A:

Q: The random variable given in the accompanying table is because

A: Here given for the Probability distribution of Number of girls.

Q: As reported by Television Bureau of Advertising, Inc. in Trends in Television, 84% of U.S.…

A: It is given that n =500 and p =0.84.

Q: Suppose 8 quarters, 5 dimes, 7 nickels, and 8 pennies are in a box. One coin is selected at random.…

A: The solution of above question is written below.

Q: When two unbiased dice are thrown, find the expected value of the product of the numbers shown on…

A:

Q: In tossing 3 fair​ coins, what is the expected number of​ heads?

A: Probability of head p =12 number of coins n= 3 The expected number heads in tossing 3 fair coins is…

Q: If 11% of the population has a certain illness , what is the expected number of ill people in a…

A:

Q: An experiment consists in asking 8 people whether they have a college degree, and counting the…

A: Let 0 represents that the individual, answer that they do not have the degree, while 1 represents…

Q: A quality control inspector samples of 500 LCD monitors and finds defects in three of them. a. What…

A:

Q: Although studies continue to show smoking leads to significant health problems, 20% ofadults in the…

A: The 20% of the adults in the United States are smokers. The sample size is 250 adults. The formula…

Q: Assume that the drawer contains 8 coins: 5 quarters, 2 dimes, and 1 nickels. One coin is randomly…

A: The probability of selecting quarter is 5/8The probability of selecting dime is 2/8The probability…

Q: Approximately 10% of all people are left-handed.  If you select a group of 27 people, what is the…

A: Given: Sample size (n) = 27 p (left-handed) = 10% = 0.10 Let "X" be the people who are left handed.

Q: what is the expected number of participants who arrived from 8 to 10 am?

A: Here Given  Arrival Rate= 5 per hour  No of team member in each team is Independent and takes value…

Q: When Tim Hortons used physical cups for their Roll up the Rim contest (before switching over to…

A: Here p( win ) = 1/6 =p X = no. of trial required until first success.  Follows geometric…

Q: 5) Families with 5 children are randomly selected, find the expected number of boys a family might…

A: (5) The no.of children in a family is, n=5 The probability of select boy child is, p=0.5 Let the…

Q: If 54% of all Americans approve the recent job performance of the president, what is the expected…

A: Given: n=1036 p = 54% of all Americans approve the recent job performance of the president = 0.54…

Q: A box contains 8 items of which 2 are defective. A man selects 3 items at random. Find the expected…

A:

Q: In designing an experiment involving a treatment applied to 4 test​ subjects, researchers plan to…

A: It is provided that 4 subjects are randomly selected out of 34 subjects which is available.Thus,The…

Q: In a survey of the weights of the backpacks of 52 students, 11 students' weighed between 0 and 12,…

A: Solution: The given data is

Q: In tossing 2 fair​ coins, what is the expected number of​ heads? Let the random variable X represent…

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

Q: If a sample of 8 batteries is selected from a lot of 11, of which 4 are defective, what is the…

A: A sample of 8 batteries is selected from a lot of 11, of which 4 are defective. The probability of…