Suppose X has the B(20, .5) distribution. Using the Normal approximation for X with the continuity correction, calculate the P(X<10). A) .5 B) .588 C) .412 D) None of the above

Q: 27. Let X have a Standard Normal Distribution. Find P(X < 1.46). C. 0.93785 A. 0.91785 B. 0.92785 D.…

A: According to the given information, we have Z score = 1.46 (Left tailed)

Q: X shows a normal distribution with a mean of u=50 and a standard deviation of o=10. What standard z…

A: Standardization of a normal random variable x with mean μ and standard deviation σ is done by…

Q: a. What is the approximate distribution of X? Of Y? b. What is the approximate distribution of X Y?…

A: Given: Let x = type A Y = type B Mean of x = 750 MPa SD of x= 60 MPa Mean of Y=  700 MPa SD of Y =…

Q: The z-score distribution’s mean and standard deviation will be defined as, respectively: a) 100 and…

A: It is given that  Mean, µ = 700 ms Standard deviation, σ = 400 ms We know that Z-Score, Z = ( X - μ…

Q: Let X have a standard normal distribution. Find a such that P(X ≤ a) = 0.47

A: Given that, X follows standard normal distribution. P(X≤a)=0.47

Q: X shows a normal distribution with a mean of µ=50 and a standard deviation of σ=10. What standard z…

A: Given data,Mean μ=50sd    σ=10x=55z=?

Q: 168. Correlation Let X and Y be jointly distributed with p(X,Y) = 1/2, o x = 2, and oy = 3. Find…

A: Given See the hand written solution

Q: For a t distribution with 16 degrees of freedom, find the area, or probability, in each a. To the…

A: Degree of freedom =df =16 NOTE:- According to bartleby guidelines expert can solve maximum three…

Q: The joint distribution of X and Y is given by: 3x2-2y f(x,y) = k For x = -1,0,1 and y = -1,0. Then k…

A:

Q: Let x be . Is x a discrete or continuous random variable?the cubic feet of space within a vehicle…

A: Find the nature  of variable x.

Q: Select the normal curve with u = 160 and σ = 20.

A: Given that μ=160σ=20

Q: 5. X is a normally distributed random variąble with a meah of 8 and a standard deviation of 3. The…

A: From the provided information, Mean (µ) = 8 Standard deviation (σ) = 3 X~N (8, 3)

Q: A fair die is rolled until a 6 is obtained. Let Y be the total number of rolls and X the number of…

A: A fair die is rolled until a 6 is obtained.Y be the total number of rolls and X the number of 1s.

Q: Let X be a v.a. with mean 80 and standard deviation 10, the value of z (standard normal…

A: If mentioned: Since you have submitted two questions, we'll answer the first question. For the…

Q: A normal distribution has μ = 45and σ =5.Find the z score corresponding to x =30. a)-3 b) 3 c) 1…

A:

Q: a. Find the marginal densities of X and Y. b. Are X and Y independent? c. Find the st. deviation…

A: Given,two dice are rolled, and X is the random variable of the number shown on the blue die,Y is the…

Q: A coefficient of skewness of 2.85:          a.  indicates a large amount of negative skewness…

A: Here we have given the, Coefficient of skewness is 2.85 i.e. Sk = 2.85 We have to identify the…

Q: chanollevisado pril 19. Draw frequency distributions that have (a) positive skewness, (b) negative…

A: 19 a) If the data has a large number of observations with higher values compared to that of the…

Q: Find the standard deviation

A: We have to calculate the standard deviation for the given frequency distribution

Q: Suppose X has the B(20, .5) distribution. Using the Normal approximation for X with the continuity…

A:

Q: 2. Let T have an t-distribution with degree of freedom (d.f.) = r. Then T2 has an F-distribution…

A: Solution-: Let T have an t-distribution with df=r . Then T2 has an F-distribution with numerator…

Q: Which of the following is TRUE about the t distribution? a. the larger the sample size the more it…

A: Given that, Which of the following is TRUE about the t distribution?a. the larger the sample size…

Q: 32. Let X have a Standard Normal Distribution. Find a such that P(X > a) = 0.80511 А. - 0.66 В. -…

A: Given that: X is standard normal Distributed with i.e. mean µ =0 and standard deviation σ =1 now…

Q: 30) Assume that z scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: given data  μ = 0σ = 1normal distribution ∴Z~N(0,1) : standard normal distributionP(-a&lt;z&lt;a) =…

Q: A normal distribution has u=10 and Q= 2  a) find the z score corresponding to x=12. b) find the z…

A: Given μ =10, σ=2 (a)  the z score corresponding to x=12.        Z=x -μσ             = 12-102…

Q: a. Determine the mean, variance, and standard deviation of X b. What is P (X < 2.5)?

A:

Q: Which of the following statements are true? I. The sampling distribution of has standard deviation…

A: Given the following statements : I. The sampling distribution of x¯ has standard deviation σn even…

Q: 5) Suppose x is normally distributed with mean 100, and P(x < 90) = 0.4. What is P(90 < x < 110)? a)…

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Q: The values of aritnmetic mean and standard deviation of the following frequency distfibution of a…

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

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Q: 30) The stalement the area to the right of a positive t-value is the same as the area to the left of…

A: t distribution: Let us assume X is a random variable following standard normal distribution and Y is…

Q: ) Suppose that a RV T has the t-distribution with k =10degrees of freedom (( ) k T t  ). Use the t-…

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Q: The PMF of X is given by 80 100 120 p(x) .2 .3 .5 Let X1, X2 be a random sample from this…

A:

Q: uppose that X is normally distributed with a mean of 30 and a standard deviation of 9. What is P(X ≥…

A: given dataμ = 30σ = 9normal distributionp(x≥42.15) = ?

Q: The table gives the yearly sales, S, of a retail store in years. Year, t Sales, S 41,601 39,548…

A: Explanation of the answer is as follows

Q: Assume the data have a normal distribution. Find the critical z value(s) used to test the null…

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Q: 3.38 If the joint probability distribution of X and Y is given by f(x, y) find = x + y 30 for x = 0,…

A: Solution

Q: d). uniform R[a;b]; e). exponential exp[µ] ; f).

A: 1) Gaussian(normal) distribution:- m=µ  Mean E(x)=∫-∞∞ x*f(x)dx     =∫xσ2π *e-1σ2*(x-µ)2dx    Put…

Q: 6. Which is the graph of V? Normal Distributions X-N(u = 3,0 =0.4) Y-N(H=3,0 1) w-N= 3, d 2.2) V-N(H…

A:

Q: 4) Suppose that the lifetime of a component (in hours) is modeled with a Weibull distribution with B…

A: Wei bull distribution : The Weibull Distribution may be a continuous chance distribution which will…

Q: chaes e [0,1) the random a number with uniform U From the unit interval. distribution. Define Y= 0²…

A: Given, A number u from the unit interval [0, 1] with uniform ditribution.           To find, The…