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: Thirty percent of students in a college are Freshmen. In a random sample of 15 students form the…

A:

Q: D. Based on the ercent chance of

A: The event A and event B are the mutually exclusive events , they are not the dependent events which…

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: A building has thirteen floors. Someone boarding the elevator on the first floor has an equal…

A: As given that , A building has 13 floors , Someone boarding the elevator on the first floor has an…

Q: of the parts produced by a particular machine, 0.8% are defective. If a random sample of 7 parts…

A: According to the given information, The probability of success in a trial is :-P = 0.8%  =…

Q: Among 70 exposed people. 15 developed disease and 55 remained healthy. What is the odds of illness…

A: Given: developed disease = 15remained healthy = 55Total exposed = 70

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: You are randomly selecting a sample of 15 participants for your research. The probability of…

A:

Q: the sample space for tossing  three fair coins is [HHH,HHT,HTH,HTT,THH,THT,TTH,TTT]. what's the…

A: 3 fair coins are tossed.  The sample space S={HHH,HHT,HTH,HTT,THH,THT,TTH,TTT}

Q: Refer to the sample data for​ pre-employment drug screening shown below. If one of the subjects is…

A: Given data   Positive test result Negative test result     Drug use is indicated…

Q: According to the manufacturer, M&M's are produced and distributed in the following proportions:…

A: P(brown ) =0.113P(red) =0.108P(yellow) =0.143P(green) =0.184P(orange) =0.177P(blue) =0.275

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: A telephone survey uses a random digit dialing machine to call subjects. The random digit dialing…

A: The telephone survey uses a random digit dialing machine to call subjects.

Q: In the United States, there has historically been a strong relationship between smoking and…

A: The given chi-square test statistic is,  The degree of freedom is,

Q: Stress at work:  In a poll conducted by the General Social Survey, 81% of respondents said that…

A: Method : By using Binomial distribution

Q: Three cards are selected from a standard deck without replacement.What is the probability that an…

A: From the given information, Total cards = 52 Total ace = 4 Total number of king = 4 Total number of…

Q: Consider an experiment that is performed by filpping a coin 3 times. The resuit of the fIips (H-…

A: Given that  Flipping a coin 3 times  and result of the flip ( Head or Tails ) recorded.   We know…

Q: An automated assembly line produces 43,500 parts per duty cycle. The probability that a randomly…

A:

Q: 20% of produced airbags over 10 years are defective. a. what is the sampling distribution of the…

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: In a poll conducted on February 3 through 18 in 2021  41% of the United States was found to be…

A: According to the given information,Probability of success, p = 41% = 0.41Sample size, n = 10Let X be…

Q: A researcher studying the proportion of 8 year old children who can ride a bike, found that 219…

A: Given: n= 567 ,x= 219.0 Need to find sample proportion.

Q: The proportion of each colored marble is shown in the table. Suppose you draw two marbles one after…

A:

Q: Refer to the sample data for​ pre-employment drug screening shown below. If one of the subjects is…

A: The probability that false positive is obtained below: The probability of an event A is defined as,…

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: 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: Consider the following event: Rolling a twelve-sided die and getting a number smaller than 6. What…

A: Since you have asked multiple questions here, we will solve the first question for you. To get the…

Q: hly selected, what is the probability of getting someone who has been in a car accident? Round to…

A: Define an event  A: Someone who has been in a car accident Given that, number of respondents who had…

Q: Using a spinner with 4 equal-sized sections, Sammy spun 20 times. The spinner showed red 7 times,…

A: The objective of this question is to calculate the experimental probability of the spinner landing…

Q: A recent national report states the marital status distribution of the male population age 18 or…

A: a.   Consider that pi’s are the proportion of never married, married, widowed and divorced,…

Q: The grade appeal process at a university requires that a jury be structured by selecting six…

A:

Q: The Mars candy company states that 20% of all milk chocolate M&Ms are blue. In a sample of 80 M&Ms,…

A:

Q: A  survey was done to see which platform people prefer the most.    Facebook Instagram Snapchat…

A: Let us take the probability of choosing someone who prefers Instagram as P(A) and the probability of…

Q: A study by Allstate Insurance Co. finds that 82% of teenagers have used cell phones while driving…

A:

Q: In a major city, between 2012 and 2017, the police made 300,000 (what are called) investigatory…

A: Note: Hey there! Thank you for the question. We do not have access to the math plug-ins mentioned in…

Q: 5. Out of all registered vehicles in California, 95% of them pass the State Emissions Test. If ten…

A: Given information Probability of passing the emission test p = 0.95 10 vehicles are selected X…

Q: A survey was done to see what drinkers prefer and these are the results. beer wine liquor Male 45 13…

A: According to the given information, we can write the result in table format -Beerwineliquor total…

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

A:

Q: A chip is drawn at random from a jar containing 8 red, 2 blue, 3 green , 4 yellow, and 3 white…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the…

A: There are 100 adults who are randomly selected from each state and the District of Columbia.

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.