A division-wide aptitude test in Mathematics was conducted to 1 000 pupils. The mean of the test is 58 and the standard deviation is 12. The scores also approximate the normal distribution. 17. What is the minimum score that belongs to the upper 10% of the group? 18. What are the two extreme scores outside of which 5% of the group are expected to fall? 19. What is the score that divides the distribution into two such that 75% of the cases is below it?

Q: If the mean body tempe tire of a bird is 75 degrees with a standard deviation of 4 degrees, which is…

A: Given information- Population mean, μ = 75 degrees Population standard deviation, σ = 4 degrees Let…

Q: In a job fair, 2000 applicants applied for a job. Their mean age was found to be 28 with a standard…

A: Given that  mean = 28 ,s.d =4 ,n =2000

Q: the data is in the weight column. pls answer number 8 9 and 10.

A: Data is in the Weight Column  8) We need to determine whether there are any outliers in the data…

Q: An instructor gives a 100 point examination in which the grades are normally distributed. The mean…

A: Mean = 60 Standard deviation = 10 Normal distribution, 5% students get A 5% students get F 15%…

Q: 2. A reading exam was conducted for 4th grade children and 9th grade children. The 4th grade…

A: a. The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the…

Q: 15. Entry to a certain University is determined by a national test. The scores on this test are…

A: Sol:- To determine if Tom will be admitted to the university, we need to calculate his percentile…

Q: Pandora, the owner of a food delivery app, knows from experience that the time needed to assemble a…

A:

Q: 5. Three students took different math tests. Which student had the best relative score? Explain how…

A: Comment: As per the our company guidelines we are supposed to answer only one question. Kindly…

Q: 7. In the normal curve, a. the mean, median, and mode are all on the highest point of the curve. b.…

A: The objective is to identify the correct statement related to the mean, median, mode, and standard…

Q: The IQ of a person follows a normal distribution and has a mean of 100 and a standard deviation of…

A: It is given that the mean is 100 and standard deviation is 15.

Q: A teacher wants to know how well 95% of her students performed on the first exam. Obtain the mean…

A: Given data is showing test scores of students performed on the first exam .  To find mean :  The…

Q: In 2005, 1,475,623 students heading to college took the SAT exam. The distribution of scores in the…

A:

Q: The average scores in a pre-final examination scored by under graduate students in the previous year…

A: Given that  Population mean=63 Sample size=70 Sample mean=68  Standard deviation =15 Then we have to…

Q: Do political science classes require the same amount of writing as history classes? The 50 randomly…

A: Given that, Sample size of political science classes n1=50 Sample size of history classes n2=40…

Q: About 300 secretaries work in a government agency. Their average keyboard usage rate is 65 words per…

A: Basically this question is checking our understanding about descriptive statistic and hypothesis…

Q: Average math SAT score is 517 with a standard deviation of 117. School Clemson SAT score of 50…

A: Here, we will use z-test for single mean as n≥30.

Q: 5. Suppose a coffee company is in a basketball tournament. Their primary rival (a tea company) has…

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

Q: C8. We'll examine the results of the 2018 SAT math exam with a mean of 531 and standard deviation of…

A:

Q: 10 10 13 14 1) Calculate the mean. 4.

A:

Q: At a supermarket, the mean waiting time to get to the checkout counter is 5 minutes and the standard…

A:

Q: (c) Calculate a 95% confidence interval (in hours) for the mean number. hours spent in volunteer…

A: From given data we have the sample mean , sample standard deviation and sample size as :…

Q: What percent of women fall between 64 inches and 77 inches?

A: The objective of this question is to find out the percentage of women who fall between 64 inches and…

Q: 32. The union, as well as the intersection, of two mutually exclusive and independent events is the…

A: 32) The union, as well as intersection, of two mutually exclusive and independent events is the null…

Q: Please include an explanation of what was done and a problem break down.  The cost of unleaded…

A:

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A: σ=3.7,E=0.3,C.I=90%

Q: pach Baker will give an A to any of his High School runners whose times are in ti stest 20% in the…

A:

Q: 17. A machine fills bottles with cola. The mean fill is 341 mL with a standard deviation of 2 mL.…

A: Answer:17- Given mean μ = 341 ml   and a standard deviation σ = 2 ml                    The…

Q: age, ed in 4 places by the time they are 18 years old. Is this average more for college students?…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: 0.How would removing outliers affect the standard deviation of a data set?     A.Removing outliers…

A: An outlier is a value that deviates significantly from the rest of your data collection. This may…

Q: An aptitude test in Mathematics was conducted to 1000 students. The mean of the test is 62 and the…

A: GivenMean(μ)=62standard deviation(σ)=8

Q: 19. A manufacturing company has designed a new test of mechanical aptitude for its machinists.…

A:

Q: Part (1) What is the p-value? (Round your answer to four decimal places.) Enter a number. Part (g)…

A:

Q: 5. A set of final exam scores has a mean of 53 and a standard deviation of 6. The scores are…

A: Note : - As per our policy we can answer only one question at a time, please make a new requests for…

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A:

Q: The scores for a standardized test follow a normal distribution with a mean test score = 84, and…

A:

Q: Determine if one-tailed test or two-tailed test fits the given alternative hypothesis. 1. The mean…

A: Hypothesis :  It is a statement about the parameter or statistical distribution that we have to…

Q: A woman gave birth 310 days after a visit from her husband who was in the Navy. Assume normally…

A: Given Information: A woman gave birth 310 days after a visit from her husband who was in the Navy.…

Q: 11. Sixteen men and sixteen women purchased magazine subscriptions. The distribution of prices had…

A: Given that  Sixteen men and sixteen women purchased magazine subscriptions. The distribution of…

Q: .5 .25 1.4 1.5 .85 .20 1.5 1.75 .10 .65 .75 1 1.10 1.65 1.4 .6 .35 .40 .25 a. What is the mean…

A: Given data is0.5,0.25,1.4,1.5,0.85,0.20,1.5,1.75,0.10,0.65,0.75,2,1,1.10,1.65,1.4,0.6,0.35,0.40,0.25

Q: The Bureau of Elections in a county samples the voting records by party. It finds that the Yellow…

A:

Q: 22. Heights of women. The heights of American women between the ages of 18 and 24 are approximately…

A: normal distributionμ = 64.1 inchesσ = 2.5 inchesP(height over 5 feet 9 inch) = ?

Q: In a test of the effectiveness of garlic for lowering cholesterol, 45 subjects were treated with…

A: Here, mean (Xbar)= 4.5 Standard deviation, sigma= 18.5  Sample size, n= 45 We know that,  Confidence…

Q: 9. Determine whether it is usual or unusual Determine whether the score 33 is usual or unusual when…

A: We find the z score of 33

Q: National park services, a bureau of the US government responsible for park management, is interested…

A: For current year: The mean can be obtained as: Thus, the mean is 74.56. Arranging the data set into…

Q: How would you describe each distribution?

A: here given, Two stores sell watermelons. At the first store the melons weigh an average of 22…

Q: Exercise 2. A test has been devised to measure a student's level of motivation during high school.…

A: For the distribution of motivation scores of high school students (which is normally distributed),…