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1. Use your own words to describe the t test ratio.
2. How are the standard error of the difference between two means and the standard error of the mean difference scores similar?
3. How does the repeated-measures t test differ from the independent samples t test?
4. Describe the purpose for reporting confidence intervals with your results.
What is the probability that he completed the assignments?
What happens to the confidence interval if you (a) increase the confidence level, (b) increase the sample size, or (c) increase the margin of error?
Estimate a range of values centered about the mean in which about 95% of the state per captia income taxes will fall.
Findout the value of X using normal distribution which gives standard deviation also mean. A math teacher gives two different tests to measure students' aptitude for math.
Conduct a one-sided, right-tailed test of H0: µ = 1250 versus Ha: µ > 1250. Is there any evidence to suggest the true mean square footage is larger during.
The probability of an randomly selected person quits a team is 0.125. Assume the team has n members. Determine the smallest n that the team needs to have if the probability of the team has at least 20 members left is 0.9.
Suppose that the dividends of dividend-paying stocks are normally distributed with a mean of 3.86% (as a percentage of the share price) and a standard deviation of 1.25%. In a sample of 55 dividend-paying stocks, what is the probability that the a..
Let Z1, Z2,... be iid random variables with density f . Suppose that P(Zi > 0) = 1 and that λ = limx↓0 f (x) > 0. Let Xn = n min{Z1,..., Zn}.Show that Xn """ Z where Z has an exponential distribution with mean 1/λ.
You work at a hospital that has always had about 100 emloyees staffed at night. You think that the number of employees staffed at night has recently decreased and would like to test this claim.
q1.if n 10 and p 0.70 then calculate the mean standard deviation and variance of the binomial distribution.q2.suppose
(c) Suppose now that we consider the Poisson process over the entire real line, that is, {N(t),t ∈ R}. What then is the distribution of A(t) + D(t)?
Contrapose the following propositions and state whether the contrapositive is logically equivalent or not logically equivalent to the given proposition.
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