It is given that n=3 and >d2=12. What as per your analysis would be the value of its standard deviation? О а. 12 O b. 4 O C. 2 O d. 3

Q: Assume that scores on a trivia challenge test were distributed normally, with an average score of 70…

A: Given data, μ=70σ=6

Q: Both sets of values have an average of 13. Is Set A's standard deviation smaller, larger, or about…

A: Here two data sets are given A and B Both have same mean

Q: The average test score in a particular class is m=30. If you scored a 40 and the class (sample)…

A: Introduction: Denote the score of a randomly selected student in a class as X. It is given that the…

Q: When n 2 30 and the population standard deviation is not known, what is the appropriate…

A: Given : n≥30 population standard deviation is not known.

Q: Solve the following problems by supplying the needed information. The average number of calories in…

A: Given,mean(μ)=230standard deviation(σ)=10.1

Q: The grades of students were normally distributed with mean of 68 and standard deviation of 15.70. If…

A: A distribution which has bell shaped curve is called normal distribution. A bell shaped distribution…

Q: On a nationwide test taken by high school students, the mean score was 47 and the standard deviation…

A: Let X be the random variable from normal distribution with mean (μ) = 47 and standard deviation (σ)…

Q: On an exam with a mean of M = 98, you obtain a score of  X= 90. Would you prefer a standard…

A: It is not known whether the distribution of the score is symmetric or not. Hence ,we cant use…

Q: An engineer claims that the average weights of their products is 750 grams with population standare…

A: As per guideline only First question to be attempted. please repost thhe other questions. Step 1…

Q: With a height of 64 in, Marvin was the shortest president of a particular club in the past century.…

A:

Q: Given the weekly grocery bills of 10 customers. If the variance of the grocery bill is (16844.72),…

A: The variance of a sample isσ2=∑i=1nxi-x2n-1 And the standard deviation isσ=σ2

Q: Solve the following: Given the average age of a man which is 50 years old and has a diabetes with…

A: Provided information is ; Let X be the age  of man Average(μ)=50 years old Standard deviation(σ)=7…

Q: The average expenditure on Valentine's day was expected to. E 100.89. Do male and female cinsumers…

A: B. The margin of error at 99% confidence is 13.43971 and it is calculated below: From the given…

Q: Suppose that for a certain population of college students, the mean GPA is 2.84 with a sta deviation…

A: Given that  U=eXV=e2X From the question 9,  EX=2.84σX=0.45

Q: Ex. 13. If the probability of a defective bolt is 0.2, find (i) mean (ii) standard deviation for the…

A: Givenp=0.2sample size(n)=400

Q: has the value t = 2.24. If the standard deviation from the sample is 2.4, what is the mea %3D O 16 O…

A: The formula for test statistic is,

Q: A group of students take a Statistics Exam where the average was M = 90 and the standard deviation…

A:

Q: The members of Maggie's choir have a mean height of 58 inches, with a standard deviation of 4…

A: given: Mean height of 58 inches, Standard deviation of 4 inches  find at least approximately 89% of…

Q: The standard deviation of a variable is 15. If a sample of 100 individuals is selected, what size is…

A:

Q: A grocery supplier believes that in a dozen eggs, the mean number of broken eggs is 0.5 with a…

A: Given : For a dozen of eggs :  E(X) = 0.5 SD(X) = 0.4

Q: From the following information, find the standard deviation of x and Y variable: Sigma x =235, Sigma…

A: We have given that,  Σ x = 235, Σ y = 250 and Σ x^2 = 6750,  Σ y^2 = 6840,  n = 10 Then,  We wil…

Q: Given: Two shares X and Y. The ARR for X is 24%, and the standard deviation is 12%. The ARR for Y is…

A:

Q: Given that a data set has a mean of H = 125.7 and a standard deviation of o = 12.1 , find the…

A:

Q: On an exam with a mean of M=39, you obtain a score of X=35. Would you prefer a standard deviation…

A: Given that, Mean M =39 X=35, prefer a standard deviation of s= 2 or s=8:

Q: The scores on a driver's test are normally distributed with a mean of 100. Find the score that is 3…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 28 X~N (100, 28)

Q: A group of students take a Statistics Exam where the average was M = 90 and the standard deviation…

A:

Q: Given that the mean weight of senior high school students is 65kg with a standard deviation of 10kg.…

A: given that ; let random variable X be a weight of senior high school students.and mean(μ)=65 kg…

Q: A group of students take a exam and the adverage was m = 90 and the standard deviation was 7.8.…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: 27. On an exam with a mean of u = 80, a person scores X = 90. Which of the following values for the…

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Q: The mean of an exponential distribution is 15. Then the standard deviation of the distribution is a.…

A:

Q: A very bright student is described as having an IQ that is three standard deviations above the mean.…

A: Given information- We have given that a very bright student has an IQ that is three standard…

Q: solve for t.

A: here given ,  A group of faculty members at a local university agreed that the average annual salary…

Q: After every score in a sample has been multiplied by 4, the mean is found to be M = 48 and the…

A: Here it is asked to find the values for the mean and the standard deviation for the original sample.…

Q: The standard deviation of a 1500 volume population is 54'cm. Find out how many units the sample…

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Q: John wishes to estimate the population standard deviation of salary of college graduates who took a…

A: Standard deviation is the positive square root of the mean of the squared deviations of given…

Q: A sample with M = 85 and s = 12 is transformed into z-scores. After the transformation, what are the…

A:

Q: Use the fact that you have a distribution with a mean of M = 20 and a standard deviation of s = 2 to…

A: Solution: Let X be the random variable. From the given information, X follows normal distribution…

Q: Given that the mean weight of senior high school students is 65kg with a standard deviation of 10kg.…

A:

Q: On an exam with u=52 ,a person scores x=56.Which value for the standard deviation would give this…

A: We have given that,  Mean = 52 , X = 56 , We have to find z-score at  (1) sigma = 2  (2) sigma = 4…

Q: Given that the mean = 20 and the standard deviation o = 4, find P(x < 25).

A: Mean is 20 and the standard deviation is 4.

Q: After 6 points have been added to every score in a sample, the mean is found to be M = 70 and the…

A: Given Data: After 6 points have been added Mean=70 SD(X)=13   Let Y be the variable after adding the…

Q: Laura and learn that her GPA average in her school is a 3.6 with a standard deviation of 0.3. if her…

A: Given  average=μ=3.6, standard deviation=σ=0.3 , X=3

Q: As shown in the previous question, the average number of siblings (sibs) is about 3.5, with a…

A: A continuous random variable X follows Normal distribution with parameters μ and σ2 if its…

Q: Alice was told that her reading test score was one standard deviation below to me if test scores…

A: Given that, Alice was told that her reading test score was one standard deviation below to me if…

Q: Given Mean = 50, C.V. = 40%, Karl PearsonS Coefficient of Skewness = -0.4 Find standard deviation…

A: According to the given information, we have Mean = 50 Coefficient of variation, C.V. = 40% Karl…

Q: The mean is µ = 15.2 and the standard deviation is Η = 0.9. Find the probability that X is between…

A:

Q: Suppose the scores on an exam havea mean of 70 with a standard deviation of 10. If one student has a…

A: Mean = 70 Std dev = 10

Q: With a height of 69in, Marvin was the shortest president of a particular club in the past century.…

A: (a). Find the positive difference between Marvin’s height and mean: The height of Marvin is x = 69…

Q: the standard deviation is 10, what percentage of the most complicated thnleeaehene mreu area is ge…

A:

Q: For a population with a population mean = 60 and a population standard deviation = 9, find the score…

A: For a population with a population mean = 60 and Population standard deviation = 9