P(X =1) b. Р(x $2) с. Р(Х 3D4) а. d. Determine the mean, variance, and standard deviation of X.

Q: A nutritionist claims that the mean tuna consumption by a person is 3.3 pounds per year. A sample of…

A: Given: Population mean (μ) = 3.3 Sample meanx¯=3.1 Population standard deviation (σ)=1.05 Sample…

Q: 1.Find The standard deviation if the variances are: a.s? = 2.25 b.s? = 3.24 C.s? = 7.29 %3D S = S =…

A: Given  (a) S2=2.25  (b) S2=3.24  (C) S2=7.29

Q: Suppose that f(x) = e for 0 <x Determine the mean and variance of the random variable.

A:

Q: The size of the sampling error is Select one: a.Inversely related to the sample size, i.e., the…

A: We have to find correct statement.

Q: There is a p(x1) = 0.4 probability to observe x1 = 10 and p(x2) = 0.6 probability to observe  x2 =…

A: We have given that  X 10 5 P(X) 0.4 0.6

Q: A sample has a mean M = 55. In the sample, a score of X = 48 corresponds to z = -1.20. What is the…

A:

Q: Given a dataset: {x1, X2, Xn}, .... a) write down the formula for the standard deviation (T ). (b)…

A:

Q: A sample from a population witha mean of μ = 40, and a standard deviation of σ = 10, has a mean of…

A: Where,

Q: Given a sample with a mean of 57 and a standard deviation of 14, find x such that Pr(X > x) = 0.813

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A:

Q: Can you find the standard deviation for sx and sy?

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: From the provided information, X ~ N (0, 1) Here 0 is the mean and 1 is the standard deviation.

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Let Z-score are normally distributed with mean = 0 and standard deviation = 2 Then,  We will find…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A:

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: average heigth is 163 cm, standart deviation is 10 cm. compute p(X>168 cm) ?

A: Given,μ=163σ=10P(X&gt;168)=?

Q: A)Calculate the standard error when o=12 and n=4 B) A sample of n=36 nursing students scored a mean…

A: A) Here o = 12 and n = 4 standard error = on= 124=122=6∴Standard error = 6 B) Here given , n=36 and…

Q: If X N(49, 16), then the standard deviation of X equals

A: It is given that, X~N49,16. This, means that, the the random variable X follows a normal…

Q: In a population of exam scores, a score of X = 88 corresponds to z = 2 and a score of X = 79…

A: From the provided information, A score of X = 88 corresponds to z = 2 A score of X = 79 corresponds…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P…

A: Obtain the value of b. The value of b is obtained below as follows:

Q: If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then I.Q. of 130 will have…

A:

Q: e. What is the variance of X? f. What is the standard deviation of X? е.

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Given Data: z follows the normal distribution Mean=0 SD=1

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Given,P(z&lt;e)=0.0516

Q: Five of your classmates measured the diagonal length of the blackboard. Classmate A measured it as…

A: Average and standard deviation are measures of central tendency and variance respectively.

Q: Suppose it is desired to estimate the variance of the tensile strength of a particular type of…

A: Given: The sample pieces of a particular type of thread is n=21. The provided calculation is given…

Q: Given that it is normally distributed with a standard deviation of 8.025 cm. The engineer rejected…

A: we have to find mean value for given data...

Q: In a population with a μ = 8, a score of X = 3 corresponds to z = –2.5. What is the standard…

A: Mean = 8 Raw score , X = 3 Z score = - 2.50

Q: A psychopathologist records the number of criminal offenses among teenage drug users in a nationwide…

A: Given: SS = 10800 Sample Size (n) = 1201

Q: Q1: A group consisting of 40 boys and 60 girls. The mean weight and standard deviation of the boys…

A:

Q: The standard deviation of a sample is inversely proportional to the square root of its sample size.…

A:

Q: (a) Find the mean of p, wherep is the proportion of left-handed individuals in a random sample of…

A: Let p be the proportion of left-handed people. Given that p = 12 % = 0.12 Sample size is n = 1650.

Q: If X is normally distributed and P(X26)=0.0228, find the mean and standard deviation of X. (Make it…

A:

Q: Suppose that X1, X2, X3 and X4, are independent and identically distributed with a mean of 2.5 and a…

A: Given that X1, X2, X3, X4 are independent and identically distributed with mean of 2.5 and standard…

Q: The probability that a Poisson variate x takes a positive value is (1 – e 1.5). Find the variance…

A: Given that  Let X denotes the discrete positive values 0,1,2...  Then X follows Poisson distribution…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A:

Q: A population of scores has u = 50 and o = 5. If every score in the population is multiplied by 3,…

A: If a constant value multiplies to each score in distribution, then the mean and standard deviation…

Q: An experiment is performed to determine whether the average nicotine content of one kind of…

A:

Q: that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Given: Z ~ N (0, 1) P (- 0.9 &lt; z &lt; b) = 0.5607

Q: Suppose the mean and standard deviation of the GPAs at Tulane are  Xbar = 2.899; and s = -0.753…

A: Given information, X¯=2.899s=0.753z=-0.140 Formula for z score: z=score-x¯s

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: The probability value is 0.9866. 1-α=0.9866α=0.0134α2=0.00671-α2=0.9933 The probability 0.9933 would…

Q: f the standard deviation of a normally distributed population is 22.0 and we take a sample of size…

A: It is given that the standard deviation is 22.0 and the sample size is 4.

Q: The revenue of a  shop is approximately normally distributed with a mean of $4500 and a standard…

A:

Q: An engineer claims the population mean of a certain batch process is 400 grams. To check his claim…

A: Given info: An engineer claims the population mean of a certain batch process is 400 grams. To check…

Q: (g) Give the standard deviation of X1.

A: The standard deviation is the square root of variance. Thus, the variance of the probability…

Q: A nutritionist claims that the mean tuna consumption by a person is 3.2 pounds per year. A sample of…

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A:

Q: There are frogs and koi in a pond, and the number of frogs and the number of koi in the pond are…

A:

Q: Compute the standard score (Z-score) for x, when x = 21, the mean of the distribution = 27, and the…

A: Given that,X = 21Mean = 27Variance = 9