Difference between two populations P1 and P2 can give results as?   a P1+P2   b P1 > P2   c P1+2P2   d P1-2P2 what should be choose?

Q: A bag contain red and blue marbles. In a representative sample of 10 marbles, there are 5 blue…

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Q: Devon’s tennis coach says that 72% of Devon’s serves are good serves. Devon thinks he has a higher…

A: Given Devon’s hypotheses are:  H0: p = 72% and  Ha: p > 72%, where p = the true proportion of…

Q: A competency test is modified so that the proportion of test-takers that pass is more than 75%. A…

A: Sample proportion is given by

Q: In a study of whether smoking causes lung cancer, researchers examined 2000 people.  About half of…

A: Four percent of the smokers developed heart disease by the end of the study period, whereas only one…

Q: Researchers want to see if men have a higher blood pressure than women do. A study is planned in…

A: A hypothesis test is conducted to make conclusions about the population. A hypothesis test can be…

Q: small town of Georgia people are asked their political party. The results are:…

A: From the given information we conduct chi squared test for independence.

Q: A politician is interested in the proportion of voters in his district that think he is doing a good…

A: Given :   The above option is representing a randomly selected sample out of the population…

Q: y in which some mice. Were operated to produce a  heart lesion .other mice  underwent  a sham…

A: 1). There are two factors in this given study. First is- Lesions status in the mice. Second is- The…

Q: nties are going to be polled about their support for a proposed ballot initiative. 2,000 people have…

A: Given: For country 1 Population size = 200000 Sample size or polled = 2000  For country  2…

Q: A movie critic reviewed 36 films. 12 were documentaries and 24 were feature films. She got favorable…

A: Given information- We have given that a movie reviewed 36 films. In 36 films, 12 were documentaries…

Q: researcher selects a sample and administers treatment for anxiety to the individuals in the sample.…

A: We he to find correct answer for  the null hypothesis (H0) put forth about the treatment...

Q: In a recent poll, 530 people were asked if they preferred cats or dogs. 59% said they preferred dogs…

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Q: A librarian would like to determine whether a new book appeals more to adults or to children. The…

A: Independent samples:Two samples are independent if the sample values selected from one population…

Q: A local school district would like to implement a reading intervention to help students who are…

A: 1. Yes the school district has definitive evidence that the reading intervention works since the…

Q: A teacher has two large containers filled with blue, red, and green beads, and claims the proportion…

A: Let p1= the true proportion of red beads in container 1 and p2= the true proportion of red beads in…

Q: A group of cruise guests were surveyed about their taste in music. They were asked how they liked 3…

A: Let's denote Rock as R , Western as W and classical as C. It is given that no one dislikes all the…

Q: Does role at a University affect one’s willingness to be vaccinated? The partial results of a survey…

A: Introduction: Consider a frequency distribution given in a two-way contingency table, with the rows…

Q: 35% of women with long hair have split ends.  A hair stylist believes this proportion is smaller for…

A: The given claim is that, the proportion of women with long hair have split ends is smaller for…

Q: Maria has two routes, E and W, she can take when commuting to work. Both routes go through a…

A: Decision rule : Reject H0 if P-value  <  α Here  P-value = 0.37 > 0.1 = α.  Conclusion :…

Q: At a dinner party hosted by The University: • 13 guests had steak and chicken • 29 guests had steak…

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Q: disease that can cause complications including death. There was an outbreak of measles in Colorado…

A: since there are multiple parts , first two questions are answered in detail. Kindly repost for more…

Q: Average prices (in dollars) were recorded for three types of beverage across all 8 major Australian…

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Q: A test question is good if it discriminates between prepared and unprepared students. The first…

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Q: What is the p-value for this hypothesis test?

A: Here given According to the Census Bureau, approximately 5.3% of Americans have French heritage. You…

Q: An experiment has two stages. In the first stage there are three outcomes A, B, and C, and it is…

A: Given that  P(A)=P(B)=0.4 P(A)+P(B)+P(C)=10.4+0.4+P(C)=10.8+P(C)=1P(C)=0.2 Given P(X|A)=P(Y|C)=0.3…

Q: Test Situation One sample, n = 35, Ha:p≠p0, and α = 0.001____ One sample, n =…

A: Given information: n=35 and α = 0.001. Tail of the test: Two tailed From the standard normal table,…

Q: A teacher has two large containers filled with blue, red, and green beads, and claims the proportion…

A: Assume that p1 and p2 are the true proportion of red beads in container 1 and 2, respectively.

Q: Millman’s golfing group is terrific for a group of amateurs. Are they ready to turn pro? (Remember a…

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Q: If we are testing for the difference between the means of 2 related populations with samples of…

A: Given,samples size is n= n1=20 and n2=20

Q: A student does a survey to see if the proportions of men and women who plan to get a degree in a…

A: Given: We need to check if proportions of men and women who plan to get a degree in a health field…

Q: (P10 P40 P3 0 P2) n (P3 - P2) (P10 P40 P3) - (P10 P4) (P10 P3 N P4) - P1 (P10 P3 N P4) - (P4 U P3)…

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Q: Manufacturing is considering ordering electronic components from three different suppliers. The…

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Q: Thanksgiving Travel According to the American Automobile Association, 31 million Americans travel…

A: For the given data Perform Chi square test

Q: Genetic theory states that children having one parent of blood type M and the other blood type N…

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Q: The risk of infection after exposure to needlestick injury is 7.1 per 100,000. The risk of infection…

A: Solution: From the given information, the risk of infection after exposure to needlestick injury is…

Q: Bhie wants to invest his money in a Milk Tea business. There is a 30% chance of losing 150,000 Php.,…

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Q: A researcher asks random samples of residents of two separate counties as to whether they had…

A: Let p1 be the proportion of residents of one county who purchase organically grown food.   Let p2 be…

Q: A teacher has two large containers filled with blue, red, and green beads, and claims the proportion…

A: Given that  Let p1 = the true proportion of red beads in container 1 and p2 = the true proportion of…

Q: z=+2.00 and x=30 corresponds to z=-1.00 what is the population

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Q: Michael, a nurse manager at a local hospital, wanted to know more about the hospital's full-time…

A: In statistics, the population consists the entire set of entities which are under study, whereas, a…

Q: Night Owls ~ A MSU psychologist reports that 40% of MSU students regularly sleep less than 8 hours…

A: **Due to guidelines from Bartleby Experts are only allowed to answer first three subpart of one…

Q: A company claims when parents use their gender selection method, the chances of having a girl will…

A: Given data A company claims when parents use their gender selection method the chances of having a…

Q: A research report concludes that there are significant differences among treatments, with "F(3, 28)…

A: Given A research report concludes that there are significant differences among treatments, with…

Q: An Engineer wanted to know whether the strength of two different concrete mix designs differed…

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Q: (b) A rescarcher supects that the fish in a particular elevated wetland have elevated mercury level.…

A: Here, n1=5, n2=4, x1=0.6252, x2=0.3985, s1=0.0607, and s2=0.1235.  Assume that the population…

Q: In comparing the means of two independent samples, the larger the size of the samples, the less…

A: Hypothesis testing: Hypothesis testing or significance testing is a method for testing a claim about…

Q: Ajar is filled with a diluted chemical, five parts of which are water and seven parts are chemical.…

A: Note: As per our company guidelines we are supposed to answer the first question only. Kindly as the…

Q: our p value is .03 and you chose your α level to be .05. What kind of error could you be making?

A: Our p value is .03 and you chose your α level to be .05. What kind of error could you be making?…

Q: A building contractor has a chance to buy an odd lot of 1,000 used bricks at an auction. She is…

A: Our population of interest would be the one from which we have taken the sample and on the basis of…

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.