A sample of n = 5 scores has ΣX = 20 and ΣX2 = 180. For this sample, what is the value of the sample standard deviation, s?

Q: er has a height of 6 feet 8 inches, or 203 cm. Based on statistics from a data set, his e of 4.10.…

A:

Q: The quality-control manager at a light bulb factory needs to determine whether the mean life of a…

A: Given,sample size(n)=64sample mean(x¯)=350Population standard deviation(σ)=100

Q: A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was…

A: Let X be a random variable following normal distribution with mean μ and variance σ2, i.e.,…

Q: n = 11 Ex=55 Ex²=2230 Give the value of the sample standard deviation.

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Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A:

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A:

Q: Using the formulas, calculate the (i) mean and (ii) standard deviation of X.

A: Let p be the probability of shot that scored points. Given that p = 61.3% = 0.613 Given that X= the…

Q: A sample of the number of sick days used by employees at a clinic is as indicated: 0,    0,    1,…

A: Given data 0,0,1,1,2,4

Q: The mean rate for cable t.v.from a sample of 80 households was $29 per month with a standard…

A:

Q: Renee scores an average of 153 points in a game of bowling, and her points in a game of bowling are…

A:

Q: A test score of 45 has an equivalent standard score (z-score) of 1.6. If the mean test score is 39,…

A: given dataraw score  x = 45standard score   z = 1.6mean μ = 39S.D.  σ = ?

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: Consider that the mean and standard deviation of a random variable x are µ and σ, respectively.…

Q: For a sample with M = 90, a score of X = 88 corresponds to z = -1.00. What is the sample standard…

A: Solution-: Given: M=90, X=88, z=-1 We want to find the sample standard deviation?​

Q: Scores on the verbal reasoning portion of the GRE have a mean of 150 and a standard deviation of 8.…

A: The provided information are: Population mean μ=150 Population standard deviation (σ) = 8 Z-score =…

Q: This year’s group of high school students did poorly on their final exams (M = 69, s = 11.3),…

A: Given information- We have given the mean and standard deviation of the high school students final…

Q: The mean deviation of the data(1 * :2,9,9,3,6,9,4 from the mean is 2.23 3.23 O 2.57 O 3.57 O

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Q: A successful basketball player has a height of 6 feet 5 inch . Based on statistics from a data​ set,…

A: Given: z score = 2.58 The height of players in cm is 195.58 ≈196cm The formula to compute the…

Q: A college entrance exam scores are approximately normally distributed with a mean value of 145 and a…

A: Solution: Let X be the college entrance exam score. From the given information, X follows normal…

Q: 95% of 80 night students scored between 70% and 80% on a quiz. If this data is normally distributed,…

A: Given: Total number of students n=80.             let X  denote the marks of students then,  X ~N(µ,…

Q: A population is normally distributed with a mean of 25 and a standard deviation of 3. What is the z…

A: GIVEN DATA,μ=25σ=3X=18z=?

Q: The scores on the Accuplacer test and high school GPAs are normally distributed. The accuplacer test…

A:

Q: ... Since the z score for the tallest man is z = and the z score for the shortest man is z = | , the…

A: The tallest living man at one time had a height of 238 cm. The shortest living man at that time had…

Q: A sample has a mean M = 55. In the sample, a score of X = 48 corresponds to z = -1.50. What is the…

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Q: Use a formula to find the standard deviation of the sample 1, 4, 5, 6.

A: We have given that,  The data set of the sample is,  1, 4, 5, 6 Then,  We will find the standard…

Q: Test scores for an algebra class had a mean of 78 with a standard deviation of 4.1. Test scores for…

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Q: H=34, o=4.5, the score is 2.5 standard deviations above the mean

A: Suppose the variable of interest is x.The mean is and the standard deviation is .

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: Solution: Let X be the score. From the given information, X follows normal distribution with mean…

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 225…

A: Given that  The tallest living man at one time had a height of 225 cm. The shortest living man at…

Q: In 1970, adults who were 18 years or more had a mean systolic blood pressure (SBP) of 148 mm Hg.,…

A: Given that in 1970 adults who were 18 years or more had a mean systolic blood pressure (SBP) of 148…

Q: A successful basket ball player has a height of 6 feet 4 inches. Based on statistics his height…

A: As given, The basketball player has a height of 6 feet 4 inches and when his height is converted to…

Q: The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for…

A: It is given that the mean test score and standard deviation for history test are 63 and 9, the mean…

Q: A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was…

A: GivenMean(μ)=1457standard deviation(σ)=315

Q: A successful basketball player has a height of 6 feet 6 ​inches, or 198 cm. Based on statistics from…

A:

Q: What position [how many standard deviations] in the distribution corresponds to z-score of z= -1.00?

A:

Q: The length of songs in the Big Hair playlist of a Statistics professor's mp3 player varies from song…

A: a) The probability that the next song to be played is between 3.9 and 4.85 minutes long is 0.5321.b)…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: The following information has been provided: Let X be random variable represents the standardized…

Q: sample of university students has an average GPA of 2.78 with a standard deviation of 0.45. What is…

A: We have given that,  Let X be the GPA score from normal distribution with average or mean (μ) = 2.78…

Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…

A: Let "X" be the exam scores.

Q: A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was…

A: We have, X= A standardized​ exam's scores the mean test score was 1549 and the standard deviation…

Q: In a population, the data value 180 has a z score of -0.8. The standard deviation of this population…

A: The question is about z score.Given :Raw value ( x ) = 180z score = -0.8Standard deviation of the…

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.