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1. In the population of adult Americans, the variable IQ is found to be normally distributed. Discuss the similarities and differences between a normally distributed variable and the normal curve.
2. For normally distributed scores, what proportion of scores would fall:
(a) above z 1.00?
(b) above z 2.00?
(c) above z 3.00?
(d) below z 2.00?
(e) below z 3.00?
on average josh makes three word-processing errors per page on the first draft of his reports for work. what is the
Create a set of 5 positive numbers (repeats allowed) that have median 10 and mean 7. What thought process did you use to create your numbers?
Compute the 95% confidence interval for the true proportion of students who have cheated on at least two tests in the last year.
A Gallup poll taken in May 2000 asked the question, "In general, do you feel that the laws covering the sale of firearms should be made.
The Computer Systems Department has eight faculty, six of whom are tenured. Dr. Vonder, the chair, wants to establish a committee of three department faculty members to review the curriculum. If she selects the committee at random:
Assume a random sample of 16 gasoline stations is selected and their mean cost for regular gasoline is computed. What is the standard error of the mean in this experiment?
What results in your departments seem to be correlated or related (either causal or not) to other activities? How could you verify this? What are the managerial implications of a correlation between these variables?
Two airlines fly to Memphis. according to airport data for the past year, wings airlines planes arrived on time 330 times and were late 60 times. Global airlines planes arrived on time 430 times and were late 50 times.
Suppose that each value of y given in the table is increased by 5 and the x values remain unchanged. Would you expect r to increase, decrease.
Please see the attached file for the fully formatted problems. Convert the following equations into logarithmic form:
Get the data on eruption times and waiting times between eruptions of the Old Faithful geyser from the website. Estimate the mean waiting time and give a standard error for the estimate. Also, give a 90 percent con?dence interval for the mean wai..
An experiment consists of rolling a special 22-sided die. All of the numbers, 1 through 22, are equally likely. Find the probability of each event.
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