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Find the P-value for a left-tailed hypothesis test with a test statistic of z = -1.71. Decide whether to reject H0 if the level of significance is a=0.05.
A census by the county dog control officer found that 18% of homes kept one dog as a pet, 4% had two dogs, and 1% had three or more. If a salesman visits two homes selected at random, what's the probability he encounters no dogs?
Is it sensible to conclude that this set of n=16 people is not representative random sample of registered voters?
How should the data be produced in order for your test to be valid? (In fact, the samples came in part from asking parents who were subjects in another study.
According to the Chebyshev rule, at least what percentage of the observation in any data set are contained within a distance of 3 standard deviations around the mean.
What must be the minimum yield on investments to achieve a positive operating ratio?
Nontax characteristics that should be considered in choosing an entity form include which of the following?
Identify at least three methods of statistical inference. Describe in detail each method and how you could use this method in your discipline. You may not use the same tests indicated in your research proposal.
suppose that when certain geological conditions exist there is a 20 chance of striking oil. a drilling company finds
a machine produces 1000 rubber 0rings per hour. each ring has a .9 probability of meeting a thickness specification.a
Ninety-five people read the comics first. Construct a 95% confidence interval for the proportion of the population that reads the comics first.
Exam Scores An exam has a mean of 70 and a standard deviation of 10. What exam score corresponds to a z-score of 1.5?
there are 30000 students enrolled at city university. a simple random sample of 1600 city university students was taken
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