1. The scores on a test have a mean of 100 and a standard deviation of 15. If a personnel manager wishes to select from the top 75% of applicants who take the test, find the cutoff score.

Q: Table 3.1 Final examination grades on Basic Statistics course 23 60 79 57 32 82 52 70 36 74 80 77 81…

A: Given data, Data 23 60 79 32 57 74 52 70 82 36 80 77 81 95 41 65…

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A: Mean=83 Standard deviation =4 Z score =? For x=88

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A: Regression Analysis Regression analytics is the application of statistical methods used to measure…

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A: Here we have to give  5 example pairs of dependent and independent variable Dependent variable: The…

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A: The following information has been given: Year (X) Percent (Y) 1985 9.7 1990 13.9 1995 17.9…

Q: Plot an F-distribution (in Excel) with an area of 0.10 at the right tail, with the degree of freedom…

A: Required: To plot an F-distribution with an area of 0.10 at the right tail and df1=20 and df2=16

Q: 2 3 5 7 6 7 2 S 5,1 9 6,4 10 11 12 13 3,6,2 4, 5, 1,0 2 7 where 712-72 students What is the value of…

A: For skewed distribution, inter quartile range is the best measure of spread.

Q: Do you think statistics is useful in business analysis? Discuss in not more than 150 words

A: Solution: Do you think statistics is useful in business analysis?

Q: Statistical Analysis - Data Management  For the following graph, answer the following: mean,…

A:

Q: Use the given data test the indicated hypothesis n X S a M₂ 90 191 98.7 37.5 0.05 M²90

A:

Q: A student at a four-year college claims that mean enrollment at four-year colleges is higher than at…

A: According to the given information in this question There are five parts according to bartleby we…

Q: The table below summarises the height, X₁ (in inches), and the weight, X2 (in pounds) of a random…

A: Solution: From the given information,

Q: The relationship between confidence interval and hypothesis testing is very close. Do you agree?…

A: Note: As per the guidelines if multiple questions are posted only first question should be answered.…

Q: Briefly explain how theory development might impact the selection of a sample.

A: Find: The theory development might impact the selection of a sample.

Q: groups are sections and the dependent variable is an exam score. Section 1 Section 2 Section 3 88.4…

A: By using one way ANOVA calculator

Q: on. VONNEUTED. 3. Newborn babies are more likely to be boys than girls. A random sample found 13,173…

A: The provided information is  p^=0.5172p=0.5n=25468The null and alternative hypothesis is…

Q: In a Pew Research Center Poll, 74% of 3012 adults surveyed said that they use internet. 6. A point…

A: 6) It is given that 74% of 3012 adults surveyed said that they use internet.

Q: Table 2: Number of Employees of San Manuel Corporation Department Number of %(.0000) (a) (b)…

A: The objective is to allocate an appropriate sample size for each department. .

Q: 13. The sign of the alternative hypothesis in a two-tailed test is always D. less than A. equal B.…

A: Since you have asked multiple questions, we will solve the first question for you.  If you want any…

Q: 1. Below are the number of hours spent by teachers and students in using gadgets daily. A sample of…

A: given data

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A: From the provided information, Sample size (n) = 51 Sample mean (x̄) = 97 Standard deviation (s) =…

Q: A team of engineers at the research center of a car manufacturer performs crash tests to determine…

A: Solution:- from given information Null hypothesis H0:p=0.08Alternate hypothesis…

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Q: 1. a. A psychologist wants to determine whether the prevalence of peer problems of adolescents vary…

A: Given that: Mean = 10.8 gm Standard deviation = 0.2 Px¯>10.82=0.006

Q: 1 2 3 4 5 6 7 8 9 10 11 12 2 6,2 1, 5, 2,7 7,8,4 2,5 3,6 2 6 where 7 | 2 = 72 students Calculate the…

A: From the given data we find interqurtile range.

Q: The average age for licensed drivers in a county is µ = 41.6, σ = 12, and the distribution is…

A:

Q: Prove using the properties of set operations: a. ((AUB)–C)° = (A–C) – (B – C)

A: Solution

Q: A random sample of n = 12 E-glass fiber test specimens of a certain type yielded a sample mean…

A: Given: n = 12 x¯ = 20.2 s = 1.5

Q: a. Which between the 3% and the 5% margin of error will allow the department to work within the…

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Q: grade was 74 and the standard deviation was 12. She received a grade of 72 on her biology exam,…

A: The question is about z score Given : No. of scores received in Statistics exam ( x1 ) = 82 Mean of…

Q: The bar chart shows the percentage of small, medium, large companies which used social media for…

A: Bar chart shows the percentage of small, median and large companies which used social media for…

Q: on of 2 equal to 0.21 hours? e solution up to the nearest whole number, if necessary.

A: Given Mean of 7.83 hours  standard deviation of 2.65 hours standard deviation of overline x equal to…

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Q: Math 1350 6.1 Bookwork p. 290, #5 Name 6.5 Consider the population described by the probability…

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Q: Find the area under the standard normal curve within 2.7 standard deviations of the mean. Round the…

A: Here we want to find area under the standard normal curve within 2.67 sd of the mean.

Q: Following is a pie chart that presents the percentages of video games sold in each of four rating…

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Q: To develop a testable hypothesis, a literature review is done to identify the variables then the…

A: Since there are multiple questions we will answer one question for you. To get the remaining…

Q: The graph illustrates a normal distribution for the prices paid for a particular model of HD…

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Q: You take a random sample of 20 female toco toucans, and you find that they have an average body mass…

A: Given that  Sample size n =20 Sample mean =546.47 Standard deviation =104.87

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Q: Statistical Analysis - Data Management  Per each graph, answer the following: Any relevant…

A: Graphs: The figurative representation of data obtained in visual form is known as a statistical…

Q: If a CEO claims that .35 of the organization's employees hold an advanced degree, .60 hold a 4-year…

A: here use test of comparing Proportion

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A: Regression equation is used to predict the variable based on the another variable. It explain the…

Q: fast please Questions 1,2 3 refer to the following The statistics exam score has an average of 70…

A: Given that.   X~N( μ , ?^2 )   μ=70     , ?=8    , n=16   Z-score =( x - μ )/?

Q: Title: Pomacea canaliculata Meat as Natural Protein Diet for Broiler Chicken Research questions:…

A: Given Information: No. of Observations=27No. of groups=3Fcal=171.619p-value=0.000≃0.01

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 246 cm.…

A: Given : Mean : μ = 170.86 Standard deviation : σ = 8.41

Q: During the exam you will be using a sample of 500 adults with the following variables: ● genhelf -…

A: Solution The variable SBP is the systolic blood pressure.

Q: Statistical Inferences:Question 3 The average annual salary for a group of occupational therapists…

A: Given : Let X be a r.v with Mean (μ) = $65000 Standard deviation (σ) = 7000 Ginny earns $44000 per…