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Discuss, in relative terms, the sample size needed for an application of a normal distribution for the sample mean when sampling is from each of the following populations. (Assume the population standard deviation is known in each case.)
a. A normal population
b. A mound-shaped population, close to normal
c. A discrete population consisting of the values 1,006, 47, and 0, with equal frequencies
d. A slightly skewed population e. A highly skewed population.
A demonstration to verify that an item meets its reliability requirement is based on obtaining 5 successful tests. If the probability of a successful test is 0.9, find the probability that 10 tests will be required to pass the demonstration.
An aptitude test is designed to measure leadership abilities of the test subjects. Suppose that the scores on the test are normally distributed with a mean of 580 and a standard deviation of 125.
Determine a random number generator and make simulated data for not more than 25 participants (test subjects) in study using ranges of values for variables you established above.
Biting an unpopped kernel of popcorn hurts! As an experiment, a self-confessed connoisseur of cheap popcorn carefully counted 773 kernels and put them in a popper. After popping, the unpopped kernels were counted. There were 86. a) Construct a 90 ..
question each part of this problem is a separate problem.a. usingnbsp adx in sas write down the runs for an experiment
1.experiments on learning in animals sometimes measure how long a laboratory rat takes to find its way through a maze.
What is the natural model for design and how many d.f. are there for each term in the model - design while the design was still being created.)
If f is upper semicontinuous on a compact space S, show that for some t ∈ S, f (t ) = sup f := sup{ f (x ): x ∈ S}. Hint: Let an ∈ R, an ↑ sup f . Consider f -1((-∞, an )), n = 1, 2,... .
To determine monthly rental prices of apartment units in San Francisco Bay area, samples were constructed in the following ways. Identify the technique used to produce each sample. (cluster, convenience, random, stratified, systematic):
The researcher found that Abraham Lincoln's educational score did not correlate highly with the expected variable. What is wrong?
An investment firm with 10,000 clients would like to accurately forecast the average dollar amount their current customer will deposit over the coming year.
a draw a scatter plot of arm span x versus height y and the regression line.b obtain the correlation coefficient r the
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