A group of students consisting of 20 males and 20 females were selected to participate in a research study.  If the students were selected using random sampling, what is the probability of picking a female student?

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

A: The number of female students is 20. Thus, the total number of students is 20+20 = 40.

Q: Give an example of a reel experiment for the bernoulli distribution. Write down the sample space for…

A: A Bernoulli distribution must have identical trials.  The probability of success in each trial…

Q: In turning out certain toys in a manufacturing process, the average number of defectives is 10%.…

A: From the provided information, Sample size (n) = 10 The average number of defectives is 10% that is…

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: Advertisers contract with Internet service providers and search engines to place ads on websites.…

A: Given:  38% of advertisers have been a victim of click fraud. Sample size=n=420.

Q: Find the probability of getting 2 to 5 diamonds using normal distribution.

A:

Q: A psychology class consists of 28 males and 52 females.  If the professor selects names from the…

A:

Q: If 25 percent of students at a particular school use mechanical pencils, what is the probability of…

A: Given Information: The percentage of students using mechanical pencils =25% Number of the sample…

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: If administrators are selected randomly from the​ faculty, what is the approximate probability that…

A: Given that, No. of teachers = 2000 P(men) = p = 50% = 0.50 P(women) = q = 50% = 0.50 No. of…

Q: in a simple random sample of 25 companies, 23 have both twitter and facebook accounts. can we…

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Q: In a management trainee programme, women make up 80% of the participants, while males make up 20%.…

A:

Q: What is the probability of randomly selecting a 3-children family with two girls?

A: We will first list all possible outcomes in the sample space, then we will use following definition…

Q: Advertisers contract with Internet service providers and search engines to place ads on websites.…

A: Refer Standard normal table/Z-table to find the probability of z=0.63 & z=-0.63.

Q: Of 500 employees at a university, 45% are female. A sample size of 60 employees is chosen at random.…

A: Note: Use the finite correction factor if n/N is greater than 0.05. Therefore, the Finite…

Q: Suppose the first generation Apple iPad has 5% chance of being defective. What is the probability…

A: From the provided information, Apple iPad has 5% chance of being defective that is p = 0.05 Sample…

Q: If the probability of choosing a red chip from a bucket is 0.4, What is the probability of not…

A: We have the probability of choosing a red chip from a bucket is 0.4

Q: In Wyoming, there are about 300,000 registered voters, of whom 30,000 are Democrats. A survey…

A: Given that  N=300000 , X=30000 , n=900 p=X/N=30000/300000=0.10

Q: If 10% of men are bald, what is the probability that fewer than 100 in a random sample of 900 are…

A: Solution:Binomial distribution approximated to normal distribution or not is checked below:It is…

Q: A nylon connector manufacturing plant yields 16 % defective items. If 1000 connectors are randomly…

A:

Q: A university planner wants to determine the proportion of spring semester students who will attend…

A: The following information has been given: The sample size is n=50. The favorable cases X=12

Q: If 25 percent of students at a particular school use mechanical pencils, what is the probability of…

A:

Q: In an experiment with 49 degrees of freedom, value was found to be 62-7. What is the chance that in…

A:

Q: The overall defect rate in making an electronic device is also 5%. What is the probability that more…

A: Given information: Let X be the number of defects detected in an electronic device. Then X is a…

Q: Atlantic Airways flights were late (arrived or departed 15 minutes late or more). A random sample of…

A: We have given that  Number of trials n=140 Success of probability p =20.4%=0.204 We use normal…

Q: If our sampling plan calls for accepting a lot if two or fewer items from a sample of 14 are…

A: Given: Probability of success (p) = 15% = 0.15 Number of samples (n) = 15 Here, X~Binn=14,p=0.15

Q: In a certain town, 4% of people commute to work by bicycle. If a person is selected randomly from…

A: The odds of an event A is the ratio of the number of unfavorable choices for the event to the number…

Q: n experiment consists of rolling two 6-sided dice and observing the numbers on the top of the dice.…

A: roll a two six sided dice.  observe the numbers on the top of the dice.  number of outcomes in…

Q: You did an experiment in one of your classes. You put all the names of the students in a hat and…

A: Given information: The given data is summarized as given below:

Q: Describe the types of probability samples and discuss under which conditions they may be the most…

A: Solution-: Describe the types of probability samples and discuss under which conditions they may be…

Q: A Grade 11 student wants to make a study on the opinions of Grade 8 students concerning the use of…

A:

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

A: Given data,Sample size n=5Percentage of production of defective blocks is p=0.6Let X be event that…

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

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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: An internet company conducts a global consumer survey to help multinational companies understand…

A:

Q: Electric motors are manufactured by a corporation. An electric motor has a 0.02 chance of becoming…

A: X: number of faulty electric motor X has binomial distribution. X~B(n,p) n=300 and p=0.02…

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.