Define Gamma distribution. Find its moment generating function and hence its mean and variance. Also obtain the coefficients of Skewness and Kurtosis.

Q: A high school class has 150 students. 120 of them passed the MATH test; 20 students of the whole cla...

A: Given  The data is as follows: Total no. of students in high school =150 120 passed in Math test. 20...

Q: A resort plans to apportion 52 new toboggans among the four resorts based on the number of rooms in ...

A: Given :

Q: In a large high school, 37% of the teachers believe that five minutes is not enough time for student...

A: 37% teacher and 89% students believes that 5 minutes is not enough Now : 28 teachers and 100 student...

Q: We are doing an experiment to see if Psych majors do better on a test than Econ majors. The null hy...

A: The claim is that Psych majors do better on a test than Econ majors.

Q: X is a binomial random variable with n=20 and p=.4. Find P(X ≥ 7)   Question 2 options:   .166  ...

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Q: 1. The data given below is the total number of hours lost due to tardiness and absences of employees...

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only fi...

Q: wing probablity distribution, the random variable x represents the number of activities a pare ade s...

A: This is a discrete probability distribution because the sum of the probabilities is ? and each proba...

Q: A corporation that owns apartment complexes wishes to estimate the average length of time residents ...

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Q: Example The first four central moments of a distribution are 0, 2.45, 0.7 and 18.75. Calculate the m...

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Q: The juror pool for an upcoming trial contains 100,000 individuals in the population who may be calle...

A: Given : The juror pool for an upcoming trial contains 100000 no. of individuals in the population wh...

Q: The mean weights for medium navel oranges is 9.8 ounces. Suppose that the standard deviation for th...

A: Formula of z score : z = x - μσ

Q: A coin is flippled six times.  Calculate the probability of obtaining:  a. exactly three heads b. ...

A: Given The data is as follows: Coin is flipped 6 times.

Q: gan legends every day for the past few months. As you play recorded the number of wins you have per ...

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Q: 3. Fit a straight line trend using the method of least squares and estimate the profits for the year...

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Q: A simple random sample of size n=81is obtained from a population with μ=82 and σ=36. ​(a) Describe t...

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Q: In a random sample of five (5) children, the age at which they first began to combine words in speak...

A: Given : Sample size (n) = 5 Sample mean (X¯) = 16.5 Sample S.D (S) = 9.6 Confidence interval =90%  S...

Q: In the game"Red light, Green light", the probability that a player will win the game is 0.345. If th...

A: Given : Proportion of player who will win the game in the "Red light , Green light" game (p) = 0.345...

Q: What does this following statment mean? In the Korean Sarcopenic Obesity Study, individuals with T2D...

A: Odds refer to the chances of something occurring. 

Q: The freethrow percentages for the regional basketball tournament participants were compiled.  The pe...

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Q: A sample of Alzheimer's patients are tested to assess the amount of time in stage IV sleep. It has b...

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Q: 7. For a right tailed test given when o is known, what is the critical value if a = 0.05 a. -1.65 b....

A: We have given that,  For a right tailed test when σ is known, we will find critical value at = 0.05 ...

Q: The reaction time of a driver to visual stimulus is normally distributed with a mean of 0.4 seconds ...

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Q: Suppose a life insurance company sells a $270,000 one-year term life insurance policy to a 19​-year-...

A: Formula for expected value :  Expected value= ∑xP(x) 

Q: čach of 20 lots of rubber belts contains 2000 rubber belts. Number of defective rubber belts in thos...

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Q: A researcher is interested in determining the average number of years employees of a company stay wi...

A: Sample size=n=?   

Q: Psychologists have been investigating the differences between people with at least one brother or si...

A: To conclude if the variables 'state of hypertension" and "having siblings" are truly independent, th...

Q: s. Given u = 88, X = 90 s = 2, and n = 15. the sampling distribution of the sample mean for a normal...

A: Given that  Mean (μ) = 88 Sample mean (x¯) = 90 Sample standard deviation (s) = 2 Sample size (n) = ...

Q: How much does novelty influence the choice of vacation destination? Petrick (2002) reports results o...

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Q: 3. [Management Decision] Management must make a decision concerning the adoption of either plan I or...

A: Let 1 and 2 be the subscript for the plan I and plan II, respectively. Then, provided that the sampl...

Q: P(X < 13300) = R. %3D

A: Here given x has lognormal distribution 

Q: each event listed, indicate which definition(s) of probability would be appropriate (circle them), a...

A: Given: The height of great great grand father is more than 6 feet.  The appropriate choice of probab...

Q: The following are the 8 weights (kg) and blood glucose levels (mg/100mL) of 5 apparently healthy adu...

A: Given The data is as follows: Weight (x) Glucose (y) 75.3 109 73 104 59.4 79 95.7 121 8...

Q: If three coins are tossed, what are the mean, variance, and standard deviation of the number of head...

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Q: Assume Z has a standard normal distribution. Use Appendix Table III to determine the value for z tha...

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Q: CH10: An independent-measures study was completed by Dr. Savannah Deanne who tested n1 = difference ...

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Q: researcher found that 85% of white ash trees in Pennsylvania are damaged by the emerald green ash bo...

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Q: If f(x)= 2x2 – 5x + 4 for what values of x is 2f (x) = f(2x)? -

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Q: Which of the following is a correct interpretation for P(x < 16)? O a. determine a probability that ...

A: Given

Q: A survey of 1000 randomly selected smartphone users found that 86.1% of them used an Android smartph...

A: For the given data Find EBP = ?

Q: If data show that a particular exercise has a strong negative correlation with an individual's resti...

A: Here given, If data show that a particular exercise has a strong negative correlation with an indivi...

Q: X is a binomial random variable with n=20 and p=.4. Find P(X < 12)   Question 3 options:   .994 ...

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Q: CH10: An independent-measures study was completed by Dr. Savannah Deanne who tested n1 = 6 and n2 = ...

A: Given: n1=6n2=21Mean sample difference, x¯-y¯=20Pooled variance , sp2=93

Q: Based on the box-plot below is the distribution of the data most likely: 10 2. Uniform Normal Expone...

A: Given : A Box plot

Q: 0.05 Pe-005x determine the mean and variance of the distribution. Round the Given the probability de...

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Q: Question 4 Lucille is interested in the effects of alcohol consumption on style of play while playin...

A: ANOVA is used to check the difference between three or more than three groups and to check the effec...

Q: A study group wants to study if people preferred working from home, working hybrid, or they missed g...

A: We know : Probability = favorable / total

Q: If the null hypothesis is true, this means that there is no real difference between sample means and...

A: If the null hypothesis is true, this means that there is no real difference between sample means and...

Q: small-business Web site contains 100 pages and 60%, 30%, and 10% of the pages contain low, moderate,...

A: Total : 100 pages 60%low, 30%moderate and 10%high graphic content. Sample of 4 pages selected withou...

Q: (b) What is the probability that a New Brunswick family doctor has more than 2 patients calling in f...

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Q: Define construct validity

A: There are many different measures that can be used to validate tests. Let CV denote Construct Validi...