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Q1) Lengths of alligators in certain population of alligators has a standard deviation of σ = 1.6. This population is not normally distributed. You choose a random sample of 64 alligators. Sample mean that you compute is: x‾ = 15.82. Determine a 95% confidence interval for the population mean, µ
Q2) You want to study proportion of individuals in Statville that are left-handed. You choose a random sample of 400 people and number of left=handed people in your sample is 48. Calculate sample proportion and then also calculate a 99% confidence interval for true population proportion, p.
What is the rejection point at α = .01 and indicate if you would accept or reject H o ?
If two independent large samples are taken from two populations, the sampling distribution of the difference between the two sample means:
To test this notion, eight paid volunteers were placed (individually) in a room in which there was no light from the outside and no clocks or other indications of time.
The ideal number of children. "What do you think is the ideal number of children for a family to have?" A Gallup Poll asked this question of 1016 arbitrarily chosen adults. Almost half (49%) thought two children was idea suppose that p = 0.49 is e..
Estimate using three day weighted moving average. Estimate sales for the next day using a three-day weighted moving average where the weights
A major study examined the relationship between cause of death (heart attack, cancer, stroke, accident, etc.) and age. A good way to graphically represent the relationship is with
What is the probability that the first two cards dealt yields "Black Jack"?
Find the margin of error for the 95% confidence interval used to estimate the population proportion.
The chi-square goodness of fit is______________a one-tailed test with the rejection region in the right tail.
A random-effects ANOVA refers to the analysis where the levels included in the study represent a random sample of all levels that exist.
Either summarize your design or give an appropriate layout with table.
What fraction of the calls last between 4.2 and 5 minutes?
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