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1. Let X denote the mean of a random sample of size 100 from a distri bution that is x2(50). Compute an approximate value of Pr (49 <>X 51).
2. Let X denote the mean of a random sample of size 128 from a gamma distribution with ex = 2 and p = 4. Approximate Pr (7 <>X 9).
3. Let Y be b(72, !). Approximate Pr (22 Y 28).
4. Compute an approximate probability that the mean of a random sample of size 15 from a distribution having p.d.f. f( x) = 3x2, 0 x 1, zero elsewhere, is between Iand i.
AVX Stereo Equipment, Inc recently began a "no hassles" return policy. A sample of 500 customers who had recently returned items showed 400 thought the policy was fair, 32 thought it took too long to complete the transaction, and the rest had no o..
a simple random sample of 29 students enrolled in graduate programs was selected and the age of each student when they
Each contact will result in either no sale or a $50,000 sale, with the probabilities .9 and .1, respectively. Give the probability distribution for daily sales. Find the mean and standard deviation of the daily sales.
Suppose that B1, B2,......... ω ∈ Ω is a sequence of independent events such that for all i, P[Bi] = 1/2. Show that for any n ≥ 1 and for any ω ∈ Ω, we haveP[{ω}] ≤ 1/2n
show that if x and y are independent poisson random variables with parameters lambda1 gt 0 and lambda2 gt 0 thenpx y
Evaluate true mean delivery time to within 5 minutes at 90% reliability level? Suppose that standard deviation for delivery times is 18.2 minutes.
White blood cell counts are helpful for assessing liver disease, radiation, bone marrow failure, and infectious diseases. Listed below are recorded white blood cell counts.
Using the table below showing the number of students who are taking a statistics course in the traditional face-to-face mode versus online by gender. Assume one person is chosen at random from the 165. What is the probability that person is a male..
Ms Moline is the budget director for Nexus Media Inc. She is comparing travel costs for sales and the audit staff. She collected the following sample data:
What is the difference between using a hypothesis test to solve a problem and using an Analysis of Variance test (ANOVA) to solve a problem? Give an example of each.
Linear correlation (presented in Session 5) and linear regression are closely related statistical concepts
find an online report of a simple research study that includes statistics. you must include website link to the report
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