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1. When sampling is from a normal population with an unknown variance, is the sampling distribution of the sample mean normal? Explain.
2. When sampling is from a normal population with a known variance, what is the smallest sample size required for applying a normal distribution for the sample mean?
a local real estate investor in orlando is considering five alternative investments a day spa a theater a restaurant a
What is the difference between resampling (bootstrapping) and double sampling in research? Is there any difference or is the same? Please explain your response?
Given that 61% of eligible voters actually did vote, find the probability that among 1002 randomly selected eligible voters, at least 701 actually did vote.
Assuming that the population variances are equal for male and female Grade Point Averages (GPAs), use the following sample data to test whether the averages are different at the 0.05 level of significance.
Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.
Examine the residual files and produce appropriate residual plots to examine the assumptions. Are the Level-1 residuals normally distributed? Are the level-2 residuals multivariate normal? How do you know?
A university reports that the middle 50% of the SAT I math scores of its students were between 565 and 690, with half the scores above 605 and half below. What SAT I math scores would be considered outliers for that university?
question the following information is available.h0 mu le 10h1 mu gt 10the sample mean is 12 for the sample
Develop a null hypothesis and an alternative hypothesis based on the data you have collected. Discuss why you have chosen the hypotheses you developed above. Be sure to discuss the concept of null hypothesis in your response
at a local fast-food joint cars arrive randomly at a rate of 12 every 30 minutes. it takes an average of 2 minutes to
Construct a 90% prediction interval for sales when the total sq footage is 4.2 billion. The equation of the regression line is yhat=499.967x - 1595.147.
in the linear regression model it was found that the 90 confidence interval for the regression coefficient b is 1.59.3.
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