Calculus and Above

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Suppose we have a binomial experiment in which success is
Suppose we have a binomial experiment in which success is defined to be a particular quality or attribute that interests us. (a) Suppose n = 42 and p = 0.32. Can we approximate p̂ by a normal distribu… read more
rajeevanpillai
Master's Degree
Master's Degree
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Suppose n = 25 and p = 0.15. Can we safely approximate p̂ by
b) Suppose n = 25 and p = 0.15. Can we safely approximate p̂ by a normal distribution? Why or why not? , p̂ be approximated by a normal random variable because(c) Suppose n = 48 and p = 0.20. Can we a… read more
rajeevanpillai
Master's Degree
Master's Degree
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Suppose we have a binomial experiment in which success is
Suppose we have a binomial experiment in which success is defined to be a particular quality or attribute that interests us. (a) Suppose n = 25 and p = 0.39. (For each answer, enter a number. Use 2 de… read more
Expert
Mathematics Teacher
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I have a statistic question, based on marginal probability.
I have a statistic question, based on marginal probability.Consider the random variable X and its probabilty density function: xi -4 -2 0 1 3 f(xi) 0.2 0.3 0.1 0.2 0.2 A second random variable is give… read more
Tom
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According to an​ almanac, 70​% of adult smokers started
According to an​ almanac, 70​% of adult smokers started smoking before turning 18 years old. ​(a) If 300 adult smokers are randomly​ selected, how many would we expect to have started smoking before t… read more
Kofi
Ph.D.
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If X is a normally distributed random variable with a mean
If X is a normally distributed random variable with a mean of 30 and a standard deviation of 4, what is the probability that a particular instance of X, Xi, will be between 35.52 and 27.92?… read more
Sandhya
Master's Degree
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For this problem, carry at least four digits after the
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.In a random sample of 61 professional actors, it was found that 40 were e… read more
GLENN GILONGOS
Master of Mathematics
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1. On the average, there are 500 mg of aspirin in an “Extra
1. On the average, there are 500 mg of aspirin in an “Extra Strength” aspirin tablet. Suppose the random variable assigning amount of aspirin in a tablet is normally distributed with standard deviatio… read more
Nathan Weaver
Virtual Mathematics Teacher
Master's Degree
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1. (a) Use the definition of moment generating functions to
1. (a) Use the definition of moment generating functions to show that if MX(t) is the mgf of a continuous random variable X, then if Y = (X+a)/b, MY (t) = e^(a/b)t MX(t/b) ￼￼ (b) Choose appropriate co… read more
Expert
5.15 When a customer places an order with Rudys On- Line
5.15 When a customer places an order with Rudy's On- Line Office Supplies, a computerized accounting information system (AIS) automatically checks to see if the customer has exceeded his or her credit… read more
SusanAthena
Master's Degree
Master's Degree
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1) A point is generated at random in the plane according to
1) A point is generated at random in the plane according to the following polar scheme. A radius R is chosen, where the distribution of R^2 is X^2 with 2 degrees of freedom. Independently, an angle θ … read more
Dr Arthur Rubin
Doctoral Degree
Doctoral Degree
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The density function of a random variable X is given by f(x)=1/5
The density function of a random variable X is given by f(x)=1/5 sqrt 2pi e ^ -(x+1.3)^2/50. Find its math expectation, variance and distribution function… read more
Osbert12
Master's Degree
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The density function of a random variable X is given by f(x)=1/5
The density function of a random variable X is given by f(x)=1/5 sqrt 2pi e ^ -(x+1.3)^2/50. Find its math expectation, variance and distribution function… read more
Math-John
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CASE STUDY EXERCISE 2: Individual incomes. The Data Appendix
CASE STUDY EXERCISE 2: Individual incomes. The Data Appendix describes the file individuals, which contains the total incomes of 55,899 people between the ages of 25 and 65. We will illustrate samplin… read more
Chirag
Master's Degree
10,329 satisfied customers
The probability distribution table at the right is of the discrete
The probability distribution table at the right is of the discrete random variable x representing the number of patients waiting outside of a doctor's office. Answer the following: x P(X=x) (a) Determ… read more
Stevewh
Bachelor's Degree
Bachelor's Degree
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1) the time to complete a statistics exam is approximately
1) the time to complete a statistics exam is approximately normal distributed with a mean of 105 minutes. 47.5% of the students completed their exam in between 105 and 115 minutes. what is the approxi… read more
SusanAthena
Master's Degree
Master's Degree
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2. State the Central Limit Theorem 3. Why do you think the
2. State the Central Limit Theorem 3. Why do you think the Central Limit Theorem is important? 4. What is the relationship between Central Limit Theorem and Normal Distribution?… read more
Chirag
Master's Degree
10,329 satisfied customers
The random variable A has the following probability distribution: A 1
The random variable A has the following probability distribution: A 1 0.6 2 0.1 3 0.1 4 0.1 P(A) 0.1 a. Find the mean and standard deviation of A. b. How much of the probability distribution is within… read more
Osbert12
Master's Degree
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