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A population standard deviation is estimated to be 8. We want to estimate the population mean within 0.9, with a 95-percent level of confidence. What sample size is required?
directional and nondirectional hypotheses can be easily interchanged according to the hypothesis the researcher is
A random sample of size n is drawn from a population with mean μ and standard deviation σ . The mean and standard deviation of the sample are X =45 and s = 5.8.
find the mean variance and standard deviation of the binomial distribution with the given values of n and p.n90
Taggart's equity cost of capital is 10%, and its dividends are expected to grow at a constant rate. Based on this information, what is Taggart's constant growth
Find the proportion of men who died from cardiovascular disease in the high-blood-pressure group. Then calculate the odds.
a manufacturer claims the average life of a product is 500 hours. the lifetime of the product is assumed to follow an
What are the null hypothesis and alternative hypothesis for this test? The decision rule, based on the critical value, is: to reject Ho if the calculated test s
What is the p-value and compute a 95% CI for the difference in means between the two groups?
It has been a bad day for the market, with 70% of securities losing values. you are evaluating a portfolio of 10 securties and will assume binomial distribution
If n is a large number, how do you find the approximate probability that X is greater than or equal to some number?
Determine probability of waiting less than 12 minutes between successive speeders. By using cumulative distribution function of X.
"Our marriage used to suffer from arguments that were too short?" the book is interplay, interpersonal communication
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