What is the z-Score of a value of 27, given a set mean of 24, and a standard deviation of 2? Submit Question

Q: Use z-scores to compare the preformance of a student on two midterms: the first, with a mean of 78…

A: Given Information: The performance of a student on two midterms: First: Mean = 78, standard…

Q: n this scenario, what is the test statistic? A linguist believes the average age children learn a…

A: Given: n= 21.0 ,x̄= 9.2 ,s= 2.5 µ= 10.0 ,degree of freedom= 20.0

Q: The mean body mass index (BMI) for boys age 12 is 23.6 kg/m2. An investigator wants to test if the…

A: Given  detect a difference in BMI of 2 kg/m2 standard deviation in BMI is 5.7 kg/m2.   Asume that…

Q: The number of chocolate chips in an 18-ounce bag of Chips Ahoyl chocolate chip cookies is…

A: (b) Obtain the number of chocolate chips in a bag of chips Ahoy that make up the middle 98% of the…

Q: According to the National Association of Home Builders, the average cost of building a home in the…

A: The population average is given to be $117.91 per sq foot The sample mean and standard deviation are…

Q: 2. Which is a better score: a score 82 on a test with a mean of 70 and a standard deviation of 8,…

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Q: Cost of Building a Home According to the National Association of Home Builders, the average cost of…

A:

Q: Neck sizes again Look again at the histogram of men’sneck sizes in Exercise 24.a) Is the mean closer…

A: a. The frequency histogram with sample recruited health study of 250 men neck sizes (in inches).…

Q: In a mid-size company, the distribution of the number of phone calls answered each day by each of…

A: Answer: X ~ Normal distribution X~ N (μ, σ) The given values are Mean = μ = 40 Standard deviation= σ…

Q: A distribution consists of three requencies 250, 300, 350 having neans 30, 15 and 20 and standard…

A: We have given that  Size N1=250 , N2=300, N3=350 Sample mean xbar1 =30 , x2=15 , x3=20 Standard…

Q: The rule that describes the percentage of data within 1, 2, and 3 standard deviation of the mean is…

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Q: A student score 83 on a Mathematics in the Modern World has a mean of 72 and a standard deviation of…

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Q: find quartile deviation for given data  15,56,89,74,56,32,21,45,96,77,32,3,48,56,75

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Q: A student score 83 on a Mathematics in the Modern World has a mean of 72 and a standard deviation of…

A: Mathematics in Modern World  Mean1=mu1=72 Standard deviation 1=sigma1=6 Student score=X1=83…

Q: Cost of Building a Home According to the National Association of Home Builders, the average cost of…

A: State the given values,

Q: days in Buffalo, NY: {17, 26, 3, 13, 29, 34, 32, 30, 41} Which of the following values represent the…

A: Given data, 17,26,3,13,29,34,32,30,41   Standard deviation=? Variance =?

Q: llowing three data sets has the largest standard deviation? A (9,10,11,7,13) B(10,10,10,10,10)…

A: The Standard Deviation is given by SD=∑x-x2N Where, x is the mean of data.N is the number of terms.

Q: Construct a histogram class width 10 What is the mean? Give the five-number summary What is the…

A: Data : {…

Q: What is the formula for calculating the standard deviation of a set of n observations?

A: Introduction The standard deviation is one of the measures of variability.

Q: A machine is set to fill paint cans with a mean of 137 ounces and a standard deviation of 0.20…

A: Here is the Given infromation

Q: Do students who are members of fraternities or sororities have GPAS alfferent from the student body…

A: μ=2.59,s=0.34,x¯=2.47,n=123Decision rule: When p value< level of signicance,then reject the null…

Q: the diameters of pencils produced by a certain machine are normally distributed with a mean of 0.30…

A: We have given that,  Machine are normally distributed with mean (mu) = 0.30 and standard deviation…

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

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Q: What does Chebyshev’s rule say about the percentage of observations in any data set that lie within…

A: a.We have to determine the percentage of observations in any data set that lie within six standard…

Q: According to the National Association of Home Builders, the average cost of building a home in the…

A: Let μ denotes the population mean cost. The test is that the mean cost differs from $117.91 or not.…

Q: Cost of Building a Home According to the National Association of Home Builders, the average cost of…

A: We have to identify hypothesis.

Q: Consider a value to be significantly low if its z score less than or equal to - 2 or consider a…

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

Q: The mean IQ is 100 and the standard deviation is 15. What percentage of people fall between the IQs…

A: given  data, μ=100σ=15we have to find out the percentage of people

Q: A group of women suffering from various types of fears is given a therapeutic course to learn how to…

A: Let xi, (i=1,2,...,n) and yi, (i=1,2,...,n) are two samples of same sizes and these two samples are…

Q: Q4:- if you know that data ( 12, 10,12,10, 10,6) find the :- Mode, median, mean, variance and…

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Q: 110, 115, 112, 127, 112, 130.

A: Given that  Sample data : 110,115,112,127,112,130 Sum of the data values (∑(Xi)) =…

Q: sychological and educational tests, includding MMPI are often designed so they have a mean of 50 and…

A: Given Information: Mean μ=50 Standard deviation σ=10 Required: Among 1000 persons, how many people…

Q: Use z scores to compare the given values. ha recent awards ceremony, the age of the winner for best…

A: Given data,For Best ActorMean μ=45.4sd      σ=5.1Age of best actor is x=38For Best ActressMean…

Q: Score for the California Peace Officer Standards and Training test are normally distributed, with a…

A: Given X is normal Distributed with mean µ = 69.6 and standard deviation σ = 11.3 now will use…

Q: standard deviation for 15, 22, 18, 7 13, 12

A: Solution: Let X be the random variable. The given data is 15, 22, 18, 7, 13 and 12.

Q: Pumpkins from a local farmer have a mean weight of 16 pounds with a standard deviation of 2.5…

A: Given information: It is given that, Pumpkins from a local farmer have a mean weight of µ = 16…

Q: Find the mean absolute deviation of the data below 10,15,9,8,7,11,14,8,10,12

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Q: Using these reading scores  7, 7, 14, 9, 10, 8, 11, 14, 13, 14, 15, 15 and knowing the mean of the…

A: The data are 7, 7, 14, 9, 10, 8, 11, 14, 13, 14, 15, 15

Q: Which data set would be likely to have the larger standard deviation? Explain. * * Data set 1:…

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Q: Consider a value to be significantly low if its z score less than or equal to -2 or consider a value…

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.