A “common sense” test is specified so that scores are normally distributed with a mean of 100 and a standard deviation of 10 over the entire population. A firm wishes to use the outcomes of this test to recruit potential employees. If the firm will only recruit individuals in the top 2.5%, what scores will the firm use to decide whether an individual is recruited?

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A: Test is that whether the mean SI score has decreased. From previous studies,  the mean is 82.

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Q: Ermias and Trinidad began arguing about who did better on their tests, but they couldn't decide who…

A: given data Ermias  :   μ1 = 76.7     σ1  = 10.5       x1 = 76.5Trinidad  :   μ2 = 64.5     σ2  = 8.1…

Q: expected number of students who read the book online.

A: Students purchased hard copy =P(H) = 60% =0.60 Students print out from the web =P(W)= 25% = 0.25…

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A:

Q: Kimberly and Alexis began arguing about who did better on their tests, but they couldn't decide who…

A: Given data,For mathμ=76.8σ=9.9Kimberly score is X=76.4For Socialμ=62.6σ=9Alexis score is X=63.2

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A:

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A: Given:   Malik (Art history) 75.1 10 71.1 Landon (Math) 66.5 9.1 71.8 Formula:

Q: When a data set has one or two values that are much higher than all of the others which of our 3…

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A: The hypothesized mean is 3 weeks.

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A:

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A: GivenJacy took a test in Math and earned a 78.2 Bella took a test in social studies and earned a…

Q: Suppose when a data set with 32 values is treated as a "population", the value of the (population)…

A: Given that  Population Variance = 145.2  n = 32

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A:

Q: For his statistics assignment, Johnson examineddifferences in quality of grades obtained by students…

A: Johnson examined differences in quality of grades obtained by the students on regular program of a…

Q: Carla and Patrisse began arguing about who did better on their tests, but they couldn't decide who…

A: given data  carla: math testx1 = 77.7μ1 = 71.2σ1 = 10.1patrisse : english testx2 = 68.7μ2 = 64.1σ2 =…

Q: You may need to use the appropriate appendix table or technology to answer this question. According…

A: Givensample size(n)=38Mean(x)=3.6standard deviation(s)=2significance level(α)=0.05

Q: Burn’s Depression Checklist to them, a test commonly used by mental health professionals to as-sess…

A: xbar = 48 mu = 32 s = 6 n =20

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A: It is given that the mean and standard deviation are 83 and 6, respectively.

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A:

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A: Sample sizesn1 is 123 and n2 is 88.

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A: Percentile of Sam's score is given by the cumulative probability of observing a score of at least…

Q: DeAndre and Jonah began arguing about who did better on their tests, but they couldn't decide who…

A: GivenDeAndre earn in science=81.2Jonah earn in Art History=61.9For science Mean(μ)=72.2standard…

Q: Natalie and Stephanie began arguing about who did better on their tests, but they couldn't decide…

A:

Q: Rahquez and Jonah began arguing about who did better on their tests, but they couldn't decide who…

A: Rahquez took a test in Social Studies and earned a 78Jonah took a test in Math and earned a 70.4The…

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A:

Q: Lake Martin and Lake Fields are two large local lakes inhabited by white sturgeon. A while back…

A: Step 1: Identify the hypotheses The null hypothesis should be that the mean weight of the sturgeons…

Q: A group of researchers wants to see if being diagnosed with ADHD is associated with a higher level…

A: Given information, x¯=48s=6n=20μ=32 A) Test statistic: t=x¯-μsn =48-32620 =11.9257 Critical values:…

Q: Janai and Aaliyah began arguing about who did better on their tests, but the decide who did better…

A: GivenJanai earned in Math is 76.5 Aaliyah earned in social studies = 70.2For…

Q: a standard deviation of 9.8, and all the students' test grades in Social Studies had a mean of 63.4…

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Q: Salomé and Latasha began arguing about who did better on their tests, but they couldn't decide who…

A: Salome's test grade: Mean = 73.7 , Standard deviation = 10 Social studies = 80.8 Latasha's test…

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A:

Q: if a data sample has a mode of 140, a median of 130, and a mean of 120 is the distribution of the…

A: We have given thatMode = 140Median = 130Mean = 120

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.