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A medical doctor wishes to test the claim that the standard deviation of the systolic blood pressure of deep sea divers is less than 450. To do so, she selected a random sample of 20 divers and found s = 432.
Assuming that the systolic blood pressures of deep sea divers are normally distributed, if the doctor wanted to test her research hypothesis at the .01 level of significance, what is the critical value?
If no more than 5% of the containers are to weigh less than 15.80 oz., what must the standard deviation of the weights equal?
in response to concerns about nutritional contents of fast foods mcdonalds has announced that it will use a new cooking
assume that womens heights are normally distributed with a mean of 63.4 in and a standard deviation of 1.7 in.a. if 1
Given the following data on hotel check-ins for a 6-month period:
in a large section of a statistics class the points for the final exam are normally distributed with a mean of 72 and a
If there are n vectors v1, v2, v3...vn in E^m, which spans a subspace of dimension k
Provo Co. has $15 million that it will not need until 1 year from now. It can invest the funds in U.S. dollar-denominated securities and earn 6 percent or in New Zealand dollars (NZ$) at 11 percent.
What are the endpoints of a 95 percent confidence interval for the proportion defective. (Round your answers to 3 decimal places).
western pennsylvania has an average co2 emission rate of 1538 lbmwh. the city of pittsburgh has 335000 residents. if we
What are the differences between PCA, Regressin, Discriminant analysis , (K-means, hierarchicalmethods) and logisic regression(Bases in the goals and Variables (Y and Xi)
1. Let Yi and Yn be, respectively, the first and nth order statistics of a random sample of size n from a distribution of the continuous type having distribution function }{x). Find the smallest value of n such that Pr [}{Yn) - F(..
A random sample of 144 with a mean of 300 and a standard deviation of 100 is taken from a population of 5000. Find an interval estimate for µ such that we are 90% confident that the interval includes µ.
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