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The average length of a prison term in the United States for white collar crime is 34.9 months. A random sample of 40 prison terms indicated a mean stay of 28.5 months with a standard deviation of 8.9 months. At α = .04, is there sufficient evidence to conclude that the average stay differs from 34.9 months?
For a hypothesis test about a population proportion or mean, if the level of significance is less than the p-value, the null hypothesis is rejected.
From the data of parts (a) and (b) of Exercise 1 of Chapter 2, construct approximate 95% confidence intervals for the population total. Also construct approximate 95% confidence intervals for the population mean per unit
List the eight phases of development of a canal system. Discuss the possible costs incurred by the canal owner, the canal users (shippers), and the surrounding community at each phase of developing this engineering system.
consider a diagnostic test for a certain type of cancer which has a false positive rate of 5 and a false negative rate
the diameter of a spindle in a small motor is supposed to be 5 millimeters with a st.dev. of 0.04 mm. if the spindle
(a) What alternative hypothesis should the department use if it does not want to use the new tires unless they are definitely proved to give better mileage? In other words, the burden of proof is put on the new tires, and the old tires are to be k..
ltbrgt1. the following data contains the cost in cents per 1-ounce serving for a sample of 7 chocolate chip cookies.
Evaluate and discuss the meaning of your results. Use tables, charts, graphs, or visual dashboards to support your findings.
how much the mean changes?
The letters of the word PRESERVE are arranged at random. Then what is the probability that all the 3 E's occur together??
How should I compute probability in spss for variable "seizure duration" with unnormal distribution which constitutes numerical data of duration in seconds.
The owner of Maumee Ford-Mercury wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at the dealership during the last year.
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