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A polulation has standard deviation of 50. A random sample of 100 items from this population is selected. The sample mean is determined to be 600.At 95% confidence, the margin of error is?
the probability that a new advertising campaign will increase sales is assessed as being 0.80. the probability that the
Construct a 90% confidence interval for the above data Be sure to interpret this confidence interval in the context of this setting. State the null and alternative hypotheses in words and symbols. Compute the test statistic
in 1965 about 44 of the us popuation had never smoked a cigarette. a nation survey of 1205 us adults during 2006
Second treatment had M = 52 with s^2 = 36. Do these data point to significant difference between two treatments? Use the two-tailed test with α = .05.
Using the bisection method, find the positive root of 2x(1 + x^2)^-1 = arctan x. Using this root as x0; apply Newton's method to the function f(x) = arctan x: Interpret the results you obtain.
Utilizing jacobian method finding the probability density function. Utilizing either the CDF method or Jacobian method illustrate the probability density function of Y is given.
A 6-sided die is rolled and depending on the result a ball is then chosen from one of three boxes. If the roll results in a 1 a ball is drawn from box A
a little confused on this one.assume the probability of a household owning a blue-ray player is 0.70.what is the
question which is relatively better a score of 79 on a psychology test or a score of 38 on an economics test?
Incomes in the thousands of dollars were sampled in one region, they are as follows (1.5, 3.0, 4.2, 5.6, 2.6, 4.1, 0.9, 5.7, 5.4, 2.6) Assume the population is normal.
(a) Set up the balance equations and solve for the steady-state probabilities, stating conditions for it to exist. (b) Find the expected waiting time of a customer from the time he arrives until he enters service for the ?rst time.
The probability of drawing two diamonds (to complete a flush) after discarding the 5 and 7.
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