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Which of the following methods could lead to stronger evidence for the outcome of a nonparametric test?
a) ensure that the distributions are normal
b) take multistage random samples
c) ensure that the populations have equal variances
d) increase sample size substantially
Illustrate what decision should be made depended on the mini-max regret criterion. Decision based on the Mini-max criterion.
Katie is studying aggression among adolescent girls. She believes that there is a relationship between the level of interaction a girl has with her mother and her level of aggression.
What is the P-value of the test, assume the standard deviation is 3 years, a 95% confidence interval for the average time
Using the z table in Table E of Appendix C, what are the critical values for a two-tailed test when a = 0.03 .
To be from the same population? You may assume the that follows a normal distribution. values are: 2.13 1.31 1.91 1.92 1.77 1.64 2.29 1.99 2.33 2.49 2.22
The distribution of diastolic blood pressures for the population of female diabetics between the ages of 30 and 34 has an unknown mean μd and a standard deviation σd = 9.1 mm Hg.
For a random sample of 50 batteries, what is the probability that the sample mean will be less than 27.5 hours?
What is the probability of randomly selecting a male from this group?
When trucks arrive at the Ambassador Bridge, each truck must be checked by customs agents. The times are exponentially distributed with a service rate of 10 per hour. What is the probability that a truck requires more than 15 minutes to be checked..
A producer of pleasure boats wants to maximize revenue during the next month. Two types of boats are sold, x1 and x2. Type x1 sells for $40,000 and type x2 sells for $30,000. The x1 boats require 10 weeks of labor and 600 board feet of lumber each..
Use the F test of ANOVA (assume α = 0.05) to decide whether or not there are any differences in true average lumen outputs between the three brands for this type of light bulb.
What is the probability that 30% or fewer male employees will indicate that they have to pick up the slack for mom's working flextime ?
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