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You wish to test the claim that μ > 6 at a level of significance of α = 0.05 and are given sample statistics and Compute the value of the standardized test statistic. Round your answer to two decimal places.
Find the critical values for a sample with n = 10 and α = 0.05 if H0: μ ≥ 20.
Suppose you want to test the claim that μ ≠ 3.5. Given a sample size of n = 31 and a level of significance of when should you reject H0 ?
Find the standardized test statistic t for a sample with n = 12, = 17.4, s = 2.1, and if Round your answer to three decimal places.
Suppose you want to test the claim that μ > 25.6. Given a sample size of n = 42 and a level of significance of when should you reject H0?
What is the probability that the poll gets a sample in which fewer than 45% say they do not get enough time for themselves. Show your method.
Consider a random sample of 200 shafts, and let X denote the number among these that are nonconforming, what is the (approximate) probability that X is: At most 30.
Suppose the length of a typical televised football game, including all commercial timeouts, is normally distributed with a mean of 2.45 hours and standard deviation 0.37 hour.
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value.
Permutation chi square test to a regular chi square table test. What happens in situations, where assumptions of a chi square test are violated? Discuss.
What is the effect of child care on the security of attachment which develops between infant and caregiver. You suspect that infants in child care will be insecurely attached at 11 months after being in a child care from 2 months of age,
How do the graphical and computer-based methods of solving LP problems differ? In what ways are they the same? Under what circumstances would you prefer to use the graphical approach?
The data represents the closing value of the Dow Jones Industrial Average (DJIA) over the 29-year period from 1979 to 2007.
Make an Excel line graph of the data on computer viruses. Discuss the underlying causes that might explain the trend or pattern.
In particular, discuss whether there is enough information presented in the article to arrive at the same conclusion as reported."
The middle five weeks, and 60% during the last 5 weeks. Would a time-series graph of this data be appropriate? Give a reason for your answer.
A statistics practitioner conducted a two-factor analysis of variance experiment with a =4, b = 3, and r = 8. The sum of squares are listed here:
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