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The estimate of the population proportion is to be within plus or minus 0.02, with a 90% level of confidence. The best estimate of the population proportion is 0.18. How large a sample is required? (Use Student's t Distribution Table.) (Round up your answer to the next whole number.)
A random sample of 1001 University of California faculty members taken in December 1995 was asked, "Do you favor or oppose using race, religion, sex, color, ethnicity or national origin as a criterion for admission to the University of California?
charles savings and loan is testing the hypothesis that the portion of deposit slips which are filled out incorrectly
q1. with random sampling there is homogeneity within a subgroup or stratum.a. judgmental b. simple c. clusterd.
Individual scores of a placement examination are normally distributed with a mean of 84.2 and a standard deviation of 12.8.If the score of an individual is randomly selected, find the probability that the score will be less than 90.0.
How can you tell what are the solutions of a quadratic equation by looking at its graph? Explain.
In a normal population with sigma=20, a random sample of size n gave X(mean)=56.53. At the 5% significance level, make a two-tailed test of the null hypothesis mu=50, when (a) n=24 (b) n=36
For the sample of 32 lg us cities the correlation between the mean # of sq ft per office worker and the mean monthly rental rate in the central business district is the -.363 at the .05 significance level
Measures the discrepancy b/w the data and the null hypothesis. We can make large values of T are evidence against H0 in most cases. Explain why?
a production process is set to manufacture bolts with a diameter of .5 inches. the process has a standard deviation of
Differentiate between a point estimate and an interval estimate for a population parameter. What is necessary for an interval estimate to be a confidence interval?
A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information.
suppose two dice are rolled. let x be the random variable measuring the sum of the two numbers rolled.a find the
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