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1.Use α=0.01, and Determine the Chi-Square value, and come to the appropriate conclusion concerning this goodness of fit procedure.
*From the Table of Random Numbers...all have a probability of 1/10 "numbers from 0-9"
Observed Expected
0 5 10
1 15 10
2 10 10
3 8 10
4 12 10
5 15 10
6 5 10
7 10 10
8 10 10
9 10 10
100 100
2. Construct a confidence interval for σ2 using the following values of the variable, X. You may assume that the variable itself is normally distributed.
X
30
32
28
25
31
34
20
40
A. let alpha be 0.01, and construct the confidence interval.
B. Now let alpha be 0.10, and again construct the confidence interval.
C. Why did we have to assume that the variable itself was normally distributed?
Define each of the following: Type I error, and Type II error. When testing a hypothesis, why don't we set the probability of a Type I error to be extremely small? Explain.
Find the probability that no more than 12 accidents will occur during a particular year. Find the probability that no accidents will occur during a particular year.
How would you describe the function of a generalized linear regression model?
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question 1 1.a recent study by a major financial investment company was interested in determining whether the annual
Construct and interpret a 95% confidence interval estimate of the difference in the mean measurements in-lineand from an analytical lab.
Customers arrive at an automated coffee vending machine at a rate of 3 per minute, following a Poisson distribution. The coffee machine dispenses a cup of coffee in exactly 15 seconds.a. What is the average number of people waiting in line?
Use the following sample data to find the standard deviation: -1, 0, 2, 3, 7, 7, 10 (Round answer to one decimal position.)
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1 the test averages for 40 students are listed below. use 8 classes not bins to construct a frequency distribution
Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample half the size. Indicate the resulting alpha and beta. Present an argument that your study is worth doing with the s..
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