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1. Smoking, 2008. Public health statistics indicate that 20.6% of American adults smoke cigarettes. Using the 68-95-99.7 Rule, describe the sampling distribution modelfor the proportion of smokers among a randomly selected group of 50 adults. Be sure to discuss your assumptions and conditions.
2. Vision. It is generally believed that nearsightedness affects about 12% of all children. A school district has registered 170 incoming kindergarten children.
a) Can you apply the Central Limit Theorem to describe the sampling distribution model for the sample proportion of children who are nearsighted? Check the conditions and discuss any assumptions you need to make.
b) Sketch and clearly label the sampling model, based on the 68-95-99.7 Rule.
c) How many of the incoming students might the school expect to be nearsighted? Explain.
The probability that a bomber hits a target on a bombing mission is 0.700. Three bombers are sent to bomb a particular target.
1. a random sample is collected of size n from a population with standard deviation and with the data collected a 95
Random sample of 250 americans is selected, the mean of this sample belongs to a sampling distribution. What is the shape of this sampling distribution?
the owner of west-end kwick fill gas wants to determine the portion of customers that pay with a credit card. he
Determine a 90% confidence interval for the mean weight of all university male first-year students.
quantitative research questiondownload gpower and play around with it. see how changes in assumptions and parameters
among a random sample of 150 employees of a particular company the mean commute distance is 25.5 miles. this mean lies
an engineer has 3 factors speed temperature and time that she has to understand the effect on volume of liquid
Would you alter your proposals if the project was an internal project for development of a computer game software package scheduled for the pre-Christmas market?
Explain the bias and sampling error in this study.
question the temperature in january is estimated to have a mean of 34 and a standard deviation of 6 in degrees
suppose the mean systolic blood pressure in a group of individuals is 150 mmhg with a standard deviation of 15.
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