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It has been found that 10% of the people in a suburban town are allergic to ragweed.If 5 people of the town are selected at random, what is the probability that
1. exactly 2 of them are allergic to ragweed
2. exactly 3 of them are allergic to ragweed
Jane Smith is a student in the MBA 751 Econometrics course and she received an 83.6% on her final exam grade. The mean of exam scores is expected to be a 75% with a standard deviation of 8.5%. Compute a Z-score for Jane.
x viscosity of a polymer with catalyst a was measured for 22 samples with resulted in sample average of 742 and
The 112th Congress of the United States of America has 535 members, of which 87 are women. An alien lands near the U.S. Capitol and treats members of Congress as a random sample of the human race.
Is there evidence of difference in median performance between two methods? (Use α = 0.05.)
mean micro of 250 screws and a standard deviation ? of 8.30.find the probability that production will go below 238
1.a researcher wishes to compare the effect of the rate of stepping on heart rate in a step-aerobics workout. a
What sample size would be needed for the estimate to be within 1.5 percentage points with 90% confidence if you do not have a prior estimate?
the time required to assemble an electronic component is normally distributed with a mean and standard deviation of 16
consider the following dataset21.8 42.5 31.6 40.21. what is the sample mean of the values2. what is the sample standard
open the StatCrunch file Housing_Prices_Categorical_ Factors. The varia bles in the file are explained in the file description in StatCrunch. Look at the description of the variables in the file and the variables themselves and develop a "research q..
An environmentalist estimate that the mean waste recycle by adults in the country is more than 1 pound per person per day. You want to test this claim, you find that the mean waste recycled per person per day for a random sample of adults in the c..
Construct a 95% confidence interval estimate of the population mean life of the light bulbs.
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