(13) Scores on an examination are normally distributed with mean 78 and standard deviation 6. Which of the following numbers is closest to the probability that a student's score exceeds 84, given that it exceeds 72 is

Q: √2π elsewhere i) Show that f(x; 0) belongs to the one-parameter regular exponential family. Clearly…

A: As per bartleby guidelines we can solve only three subparts of the question and rest can be reposted

Q: The following table gives a two-way classification of 400 randomly selected students based on gender…

A: a) The two-way classification table is given.

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A: Given: P(A)=0.15P(B)=0.3P(C)=0.35P(D)=1-P(A)+P(B)+P(C)         =1-[0.15+0.30+0.35]         =0.2…

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Q: (a) P(0 ≤ Z≤ 2.47) (b) P(0 ≤Zs 2) (c) P(-2.10 SZ≤ 0)

A: Given that Z~N( 0,1 ) Find the required probabilities

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Q: i want to repost and answer the remaining question

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Q: Determine P(T < 0.75) Evaluate the E(3T - 4) Find the mean of T. Evaluate E (T²)

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

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A: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so i am solving…

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Q: a) Let X₁, X2, X3,..., Xn be a random sample of size n from the normal distribution N(μ, σ²). i)…

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Q: Let Z be a standard normal random variable and calculate the following probabilities, drawing…

A: P(0≤Z≤2.47)=?  P(0≤Z≤2)=? P(-2.10≤Z≤0)=?

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Q: P(A)=0.45, P(B)=0.58, and P(B|A)= 0.05. What is P(A and B)?

A: Given that  P(A)=0.45, P(B)=0.58, and P(B|A)= 0.05

Q: i will resubmit and please answer the remaining question

A: Given that  Joint probability mass function of X and Y is    p(x,y) y = 0 y = 1 y = 2 x = 0…

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A: (9) given,X has an exponential distribution and Var4-x5=20

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Q: 6 (a) Calculate 40% of 250. (b) Calculate 130% of 79. (c) 85 is what percentage of 140? (d) 62 is…

A: We need to calculate: 6 (a) Calculate 40% of 250. (b) Calculate 130% of 79. (c) 85 is what…

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A: Given information: EX=1000VarX=100

Q: 12. From each penalty Christiano Ronaldo takes, he has a 95% chance of scoring. What is the…

A: As per bartleby guidelines we can solve only first question and rest can be reposted

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Q: d) How many different boards can be formed that include a president, a secretary, a treasurer and a…

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Q: The average retail price of gasoline (alltypes) for the first half of 2005 was 212.2 cents. What…

A: sorry sir, i can gives 2 question at time  by bartleby policy i can gives only 1 answer at a time

Q: If a study determines the difference in average salary for subpopulations of mechanical engineers…

A: Given that If a study determines the difference in average salary for subpopulations of mechanical…

Q: 2. For the data 14, 21, 26, 27, 28, 32, 35, 35, 38, 45, 48, 50, 51, 51, 57, find a. The percentile…

A: We have given that  14,21,26,27,28,32,35,35,38,45,48,50,51,51,57 Here data are already arranged in…