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A sample of size 21 is taken and a significance test for H0 : u = 0 versus Ha : u doesnt equal 0 is run. The test statistic is t = 1.71. Use 3 decimal places for t values and 2 decimal places for p-values.
A researcher desires to estimate the difference in means of two populations. To accomplish this, she takes a random sample of 81 items from the first population.
Normal distribution with average 500 and SD 100. A college wants their students to be in the top 12.5% for verbal aptitude. What minimum qualifying score should they set?
samuel cartwright is suing over a workmanship defect in a data backup system that cost him 3 years of client data. he
a companys stock price rose 20.5 in 2004 but dropped 1.5 in 2005a. compute the geometric mean rate of increase for the
X is a random variable that represents ph of arterial plasma, the mean of the x distribution is 7.4. a random sample of 31 patients with arthritis took the drug for 3 months blood test
Determining whether or not the proportion of the population in favor of Candidate A is significantly more than 80%. The value of the test statistic and the p-value respectively are?
the liquid chlorine added to swimming pools to combat algae has a relatively short shelf life before it loses its
the thickness of photo resist applied to wafers in semiconductor manufacturing at a particular location on the wafer is
x1 = 100 and x2 = 127 successes were observed. What is the best point estimator for the difference ( p1-p2) in the two binomial proportions?
question 1. a box has 4 red and 5 blue marbles. as part of an experiment one of the marbles is drawn at random but when
try to recall a decision you made today. discuss how you made the decision. now follow the steps of the scientific
1.an experiment was conducted to examine the yield of six different types of alfalfa. they were planted in four
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