There are fifteen students writing a Statistics exam. What is the probability of correctly predicting the three students who obtain the highest marks in the exam, in the correct order, assuming that no student obtains the same mark as any other student?

Q: d be the next step for a research project?

A: Achievement Group 1 Achievement Group 2 Achievement Group 3 20 19 60 40 25 65 49 20 69 50 29…

Q: Use R to illustrate the WLLN (weak law of large numbers): draw a random sample from the exponential,…

A: WLLN:  WLLN says that as we increased the sample size of the sample collected from specified…

Q: 2. You are allowed to play a game with the following rules. You pay $1 to flip a fair Quarter,…

A: 3 coin : One coin= 2 outcomes (H or T) H= Head  T=Tail   Possible outcomes :  2³ = 8…

Q: On step 3, why is it that you're substracting 1 from [ P(x=0) + P(x=1) + P(x=2) + ......P(x=9)] ?

A: Let the R.V X denotes the number of computers has virus and it follows the binomial distribution…

Q: In a distribution where the mean is 70 and the standard deviation is 2, find the Klargest traction…

A: We have given that  Mean(µ) = 70Standard deviations (σ) = 2 Now, let X be random variable X should…

Q: Is this a one-tailed HA or a two-tailed HA? Otwo-tailed Ⓒone-tailed No answer text provided. No…

A: One tailed Ha : If hypothesis specifies direction of effect that test is one tailed . Two tailed Ha…

Q: Systolic Blood Pressure Assume that the mean systolic blood pressure of normal adults is 120…

A: given data normal distribution μ=120σ=5.6p(117.3<x<120)=?

Q: Suppose a jar contains 6 blue, 3 green, and 2 red marbles. What is the probability of randomly…

A: total number of marbles in jar = 6+3+2 =1111 marbles = 6 blue + 3 green + 2 redselecting randomly 3…

Q: Assuming Employee (X) and Output (Y) for Robinson Malls. Some data are given as: Some data are given…

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

Q: If we are testing for the equality of 3 population means, we should use the test statistic t test…

A:

Q: Suppose the number of births at a local hospital follows a Poisson distribution with a mean of 6…

A: GivenMean of 6 births per weekλ=6 per weekLet "x" be the no.of births in a…

Q: We want to conduct a hypothesis test of the claim that the population mean time it takes drivers to…

A: Givenclaim is that the population mean time it takes drivers to react following the the application…

Q: In 2018, a consumer goods giant had more than 20 brands with more than $1 billion in annual sales.…

A: Given data:

Q: If Cov (WFC, WFC)=0.0064, WHAT IS THE Var (WFC) ?

A: Given that Cov (WFC, WFC)=0.0064, WHAT IS THE Var (WFC) ?

Q: Lincoln County EMS is used on average 500 times over the course of a year. The number of times…

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Q: 5. In Homework 3 we talked about flipping an NOT fair coin where P(T) = 0.54 and P(H) = 0.46; thus…

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Q: Compute the following data and determine if the null hypothesis is rejected or not. STUDENTS 1 2 3 4…

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

Q: a) The discrete probability distribution is given by 0 1 2m X P(X = x) m i. ii. iii. Calculate…

A: From the provided information, x 0 1 2 3 P (X = x) m 2m 3m 2m

Q: A jar is filled with 68 different colored marbles, 12 of which are red, 29 of which are blue, and 27…

A: Given information: There is a total of 68 different colored marbles. 12 are red, 29 are blue and 27…

Q: You are playing a game where you draw a card from a standard deck, and you will win $7 if you draw a…

A: Given; you draw a card from a standard deck, and if you draw a face card then you will win 7$,  you…

Q: Refer to Exhibit 13-4. What is the correct procedure to use in Excel to test whether the population…

A: If there are two paired samples, then t-Test paired two sample for means is used. If there are two…

Q: A survey found that women's heights are normally distributed with mean 63.3 in. and standard…

A: Solution: Let X be the men's height are normally distributed with mean 68.4 in and standard…

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: given data standard normal distributionZ~N(0,1)for lowest 8% and highest 8%.cutoff scores are ?

Q: 3) Suppose in MSU, 12 out of 200 students are covid positive. If 300 students are selected for COVID…

A: 12 out of 200 students are covid positive p(covid positive)=12200=0.06here p=0.06q=1-0.06=0.94 n=300…

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: given data normal distributionμ = 100σ= 15P(x>91) = ?

Q: Costs are rising for all kinds of medical care. The mean monthly rent at assisted living facilities…

A:

Q: A jar contains 12 coins: 6 pennies, 2 nickels and 4 dimes. A child selects 2 coins at random without…

A: Given information: There are 12 coins. 6 pennies 2 nickels  4 dimes. Here, 2 coins are selected…

Q: 4. When strawberries are thawed there is a tendency to lose some juice in the process. A recent…

A: Comment: As per the our company guidelines we are supposed to answer only one question. Kindly…

Q: 6. A lightbulb will work until failure. Being a cheap Chinese import the lightbulb has a 0.001…

A:

Q: A study found that student weights averaged 87.3lb with a SD = 4lb.   What is the 2-decimal %…

A: Given that, μ=87.3 lbσ = 4 lb The probability that an individual student will weight below 85 lb is,…

Q: 3. In a study of the adverse effects of x-rays among children, a retrospective cohort study was done…

A: From the provided information, the following are interpreted: For children, who received an…

Q: Suppose that the random variable z has a standard normal distribution. Find each of the following z…

A: Solution:   a) Z0.27=0.613   b) Z0.32=0.468   c) Z0.06=1.555

Q: In a race, the top 15% of racers win a $50 gift card. If the sample is normally distributed with a…

A: The normal distribution problems would solved by using z score and its formula is stated as follows.…

Q: The number of bacterial colonies on a petri dish can have an average of 2.5 per cm2 Define the…

A: Given: The number of bacterial colonies on a petri dish can have an average of 2.5 per cm.

Q: A Stihl plant has taken delivery of 1000 LiPo batteries to be used in their hedge trimmers. They…

A: Note: In case of multiple subparts, as per the guidelines, answer to first three subparts will be…

Q: The accompanying data show the South African population versus expenditure on new construction works…

A: Given: Sample size n = 4 b = 4.4739 Formula Used: a = ∑Y-b∑Xn

Q: What distribution would you use to find the critical value in this problem.Exhibit 12-5 The table…

A: Given that: Beverage Teens Adults Total Coffee 50 200 250 Tea 100 150 250 Soft Drink 200…

Q: A normal random variable X has an unknown mean and standard deviation. The probability that X…

A:

Q: The weights of a certain dog breed are approximately normally distributed with a mean of 51 pounds,…

A: Let random variable X be The weights of a certain dog breed.X has normal distribution with…

Q: Norman earns 6% commission on each baseball uniform he sells. If each uniform cost Rs.90 and he…

A:

Q: A psychology professor has developed a workshop designed to reduce the apprehension of students…

A:

Q: 4. If Xbar(original) is the mean of all original observations and we add any constant c to all…

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Q: A shopkeeper expects a gain of 22.5% on his cost price. If in a week, his sale was of Rs.392., what…

A: Given that, selling price, SP= Rs.392 gain percent, Gain%= 22.5%   We know that gain percent is…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 97.8 and a standard…

A: Answer: - Given normally distributed with mean(μ) =97.8 Standard deviation (σ) =19.8 Find P(X…

Q: Q.4 Bag contains 5 red balls and 2 white balls. Two balls are drawn successivly without replacement.…

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Q: You have completed 1000 simulation trials, and determined that the average profit per unit was $6.83…

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Q: A farmer plants a new type of corn and wants to quickly determine the yield, or total number of ears…

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Q: In sampling with replacement, an element can be chosen:    A. Difficult to tell  B. Less than once…

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Q: Sum of Squares Between Groups (Treatment) 6,000.0 Within Groups (Error) Total Source of Variation…

A: Hint: The source of variation given in the problem above tells the best test statistic to test the…

Q: f X1,X2,...,Xn constitute a random sample of size n from a geometric population, show that Y = X1 +…

A: Given information: Let x1,x2,....,xn  is a random sample of size n from a geometric distribution.…