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

A:

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: When I was an undergraduate, I helped my father conduct some Child Psychology research about…

A: Given: n = 158 x = number of students answered Turquoise = 38

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

A:

Q: There are three $20 bills, five $10 bills, eight $5 bills, and four $1 bills in your wallet. You…

A: Use the formula of expected value to determine its value. Determine the probability of each dollar…

Q: Each​ year, Fortune Magazine publishes an article titled​ "The International​ 500" that provides a…

A: To obtain a random sample of 10 firms from Fortune Magazine's list of "The International 500" using…

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 you draw a random sample of 100 observations from a population with a variance = 25. What is…

A:

Q: A labor statistician claims that 6% of the labor forces will be laid off likely  to pandemic impact.…

A: Solution: Let X be the number of employees will be likely to be laid off and n be the sample number…

Q: A random sample of 250 undergraduate students from a large university was found to contain 67…

A:

Q: A variable that measures the count of the number of successes when only two outcomes are possible is…

A:

Q: fortune publishes data on sales, profits, assets, stockholders’ equity, market value, andearnings…

A: It is given that the data are provided for sales, profits, assets, stockholders’ equity, market…

Q: each score in a random sampling distribution represents what

A: We have given that  We have to define each score in a random sampling distribution :

Q: A world-wide study conducted last year found that adult gamers (people who play a video game at…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: One hundred students were asked whether they liked certain candy flavors. It was found that 54 54…

A: Obtain the probability that a randomly selected student liked neither flavor. The probability that 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: Among 110 Grade 9 students at a public high school, only 25 are athletes. if 10 of the students are…

A: The sample of the number of students is n=10. The probability of 25 students are athlete,…

Q: Based on a​ poll, 70​% of Internet users are more careful about personal information when using a…

A: In this case, each surveyed user is inferred to have only options of being "more careful" (i.e.,…

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: The probability of loosing a game was estimated as  0.6 . What is the probability to win this game?

A:

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: Consider a population with 3 observations: 6, 10 and 12. You use simple random sampling without…

A: Given : Population size (N)=3 6 10 12 Sample size (n)=2

Q: Table Q4 shows the numbers of mistakes made in five successive days for 4 technicians working at a…

A: The following information has been provided:   Technician 1 Technician 2 Technician 3 Technician…

Q: Suppose that 46% of politicians are lawyers. If a simple random sample of 681 politicians is…

A: Answer Given The sample size [n] =681p=46%sample proportion =43%

Q: Suppose that you have obtained data by taking a random sample from a population. Before performing a…

A: For a random sample that is selected from a population, the following steps have to be done in order…

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 and the number of female students is 20.

Q: It is known that the prevalence of Tuberculosis in a community is 9% what would be the probability…

A: given data P(tuberculosis) = p = 0.09sample size (n) = 10x = no. of individual with tuberculosisP(x=…

Q: f the 20th and 60th percentiles of a normal random variables are -4.3 and 15.8, respectively. What…

A:

Q: The data in the following table show the association between cigar smoking and death from cancer for…

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…

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.