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Suppose that a random sample of 16 measurements from a normally distributed population gives a sample mean of x-bar = 13.5 and a sample standard deviation of s = 6. Use rejection points to test Ho: μ ≤ 10 versus Ha: μ > 10 using the levels of significance given below:
What is the value of the test statistic t:
What is the rejection point at α = .10 and indicate if you would accept or reject Ho? t.10 =
What is the rejection point at α = .05 and indicate if you would accept or reject Ho? t.05 =
What is the rejection point at α = .01 and indicate if you would accept or reject Ho? t.01 =
What is the rejection point at α = .001 and indicate if you would accept or reject Ho? t.001 =
What is the equation for least squares line? Calculate the coefficient of determination.
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The null hypothesis is that there was no change in average liquor consumption. State this formally in terms of µ.
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Provide a discussion that supports the assumption that the variance of savings increases with family income.
Consider the experiment of rolling a pair of dice. Suppose that we are interested in the sum of the face values showing on the dice.
Gigi has rolled a natural on four straight tosses of the dice. This excites the gamblers standing around the table.
A school tracks the absences of pupils as part of a flu surveillance system. Regular reporting of absences among 25 students in grade 1 are taken, and based on these data, the long-run proportion of absences under normal conditions is estimated to..
Find out the probability of an event relies on past history of record data. The relative frequency method of computing the probability of an event relies on past history.
In the real world, given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject null hypothesis.
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