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The distribution of test scores in a large statistics class is approximately Normal with mean 75 points and standard deviation 7.5.
What is the test scoare of a student who's standardized score is 0.4?
A) 30 points
B) 74.6
C)75. 4
D) 78
E) We don't have enough information to determine the answer to this question.
if you take the within groups sum of squares and divide it by the between groups degrees of freedom you getthe mean
A company that manufactures precision special-alloy steel shafts claims that the variance in the diameters of shafts is no more than 0.0003. A random sample of 10 shafts gave a sample variance of 0.00027. At the 5% level of signi?cance, test wheth..
1.a normal distribution y has mean 50 and standard deviation 8. find pylt44.2.a normal distribution y has mean 50 and
The winning team's score in 13 high school basketball games was recorded. If the sample mean is 54.3 points and the sample standard deviation is 11.0 points, find the 98% confidence interval of the true mean.
beechwood specialty electronics has just leased space for a store in the crestview hills towne center that will provide
for the xy data below computea r and determine if it is significantly different from zerob the slope of the regression
determine the mean and variance of the random variable.fx 64 21 14x x 123round your answers to three decimal
Consider a high school basketball player that is a 70% free throw shooter. During the season, what is the probability that this player makes the third free throw in five shots (exactly 3 shots in 5 attempts)?
can someone please help me with this question this will be similar to a question on my exam so if you could tell me how
consider the experiments first draw a poisson random variable n with parameterlambda. then perform n independent
Be sure to include all relevant information for each of the following problems, including hypotheses, critical value, degrees of freedom, and a statement about significance.
A sample of 30 couples who have been married 10 years or less are selected from marital records available at a local courthouse. We are interested in the number of couples in this sample in which both spouses work. What is the probability that thi..
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