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Let p_1 be the proportion of successes in the first population and let p_2 be the proportion of successes in the second population. Suppose that you are testing the hypotheses:
H_0:p_1-p_2=0 \ H_a:p_1-p_2 neq 0
Futhermore suppose that z^*=1.73, find and input the p-value for this test. Round your answer to 4 decimal places.
What is the 95% confidence interval for the proportion of the population of employees who strongly dislike their current work experience?
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
a. State the appropriate hypotheses for your significance test. b. Use the sample results to compute the test statistic and the p-value.
Compute the two weights that give the cutoff points for the three categories.
You know that all sociology majors study 2.5 hours per day with a standard deviation of 1.
State the hypotheses for a right-tailed test. Obtain a test statistic and p-value assuming equal variances. Interpret these results. Is the difference in mean scores large enough to be important?
We want to estimate the population mean within 5, with a 99 percent level of confidence. The population standard deviation is estimated to be 15. How large a sample is required?
A year after graduation. Find the probability that 8 randomly selected graduates all find jobs in their chosen field within a year of graduating.
Describe what do you mean by conditional probability. Give clinical example to support the explanation.
The Department asks you to estimate a model that could ?t this situation. a) Do you think that a multinomial logit is a suitable model for this problem? Explain why.
Determine the probability that mean annual snowfall during 40 randomly picked years will exceed 111.8 inches?
What is the coefficient of x^5 in the polynomial -8x^5+0x^3+14? Find the slope of the line that contains points (-4,-2) and (1,1)
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