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The probability of error in the transmission of a binary digit over a communication [2] channel is 1=103. Write an expression for the exact probability of more than 3 errors when transmitting a block of 103 bits. What is its approximate value? Assume independence.
Make a histogram showing the probabilties of r = 0, 1, 2, 3, 4, 5, 6, 7 or 8 defective syringes in a random sample of 8 syringes.
Test the whether the attitude toward keeping weight down associated with smoking status.
Make three-month and four-month moving averages for this time series. Does the three-month or four month moving average provide the better forecast? Explain.
Determine the probability that no female are hired. Determine the mean and standard deviation of X.
Determine payback period for implementing Oracle Discoverer? Assume that WebFocus will be in-place until December 31 and the migration to Oracle will be done concurrently and is expected to be completed and operational by Dec 31 as well.
Determine the expected frequencies for each of the cells in the following contingency tables. For each problem, state how many of the expected values actually had to be computed and how many could be found by subtraction.
Could you explain the Pearson or product-moment correlation? If we were to use a partial correlation, would you want to look at the relationship between two variables while removing the effect of one or two other variables?
Use this poll result to give 70%, 80%, 90% and 99% confidence intervals for the proportion of all adults who feel this way. What do your results show about the effect of changing the confidence level? (Use Excel)
If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05
Does this sample provide enough evidence to conclude that self-esteem scores for group-participation adolescents are significantly different from those of the general population? Use a two-tailed test with α = .01.
A teacher gives a pre and post test to her students, she wants to know if there is a difference in the number of points students earned on their pretest and post test.
Chebyshev's Theorem states that the percentage of observations in a data set that should fall within five standard deviations of their mean is
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