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Multiple choice questions for Poisson distribution
The average number of typos on one page of a manuscript is 8. What is the probability that 4 to 6 type appear on 2 pages of the manuscript? Imagine Poisson distribution.
a) 0.0003
b) 0.0010
c) 0.0026
d) 0.0039
Another day, it took Eric only 12 minutes to get to work. Using the same formula, determine the z value. Is it positive or negative? Explain why it should be positive or negative.
Determine the special property of standard normal distribution, compared to other normal distributions?
Which statement is true for a statistical study?
Suppose that an IQ test was given to a large group of persons, the scores are assumed to be from a normally distributed population, that mean = 100 and s (standard deviation) = 15.
Conduct the hypothesis test and compute the p-value. At a 0.05 level of significance, what is your conclusion?
what sample size should be used in the funding decision study? Use σ = $4000 as a planning value. ________________
Below you are given a partial computer output based on a sample of 21 observations, relating an independent variable (x) and a dependent variable (y).
Use value you found in part a to find out degree of confidence for interval 65.65
Probability using normal distribution.Sampling distributions. Given a normal distribution with μ = 50 and standard deviation σ = 9, if a sample of n = 100 is selected.
Using the .05 significance level, can we conclude that there is a positive association between the two variables?
Do students tend to improve their SAT Mathematics (SAT-M) score the second time they take the test? A random sample of four students who took the test twice received the following scores
To avoid the problem of not having access to Tables of F distribution with values given for the lower tail, the numerator of the test statistic should be the one with:
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