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Jean Researcher is studying the percentage of ethanol in DWI arrestees's blood. She tests 16 subjects and finds a mean 1.8% with a standard deviation of .2%
a) Calculate the z score for the subject with an ethanol percentage of 2.0%
b) What is the ( estimated) standard error of the mean?
c) Produce a 95% confidence interval for the true mean percentage of ethanol in DWI arrestees.
jude is interested in buying a digital camera. he visited 9 stores at random and recorded the price of the particular
N = 500 is to be selected from the population. What is the probability that the sample proportion, will be within ± 3 percentage points of the true p, i.e., Pr{0.42 ≤ ≤ 0.48}?
(a) Consider a normal distribution with mean μ = 88. If 2% of the values lie below x = 50, find the standard deviation σ. (b) Consider a normal distribution with standard deviation σ = 15.6. If 10% of the values lie above x = 17.2, find the mean μ.
Please show/discuss extensively how number theory is applied in cryptography.
Different methods - a traditional method, and a web-based self-paced method. Can he conclude, at α = .05, that the test scores in the web-based self-paced method are lower?
A survey was conducted to measure the height of men. In the survey, respondents were grouped by age. In the 20-29 age group, the heights were normally distributed, with a mean of 67.8 inches and a standard deviation of 4.0 inches. A study particip..
Data collection instrument used in managerial research. Why is it significant to make sure that these data collection methods and instruments are both reliable and valid?
a history class has 75 members. if there is a 12 absentee rate per class meeting nd the mean variance and standard
Use a graphical technique to compare the divorce rates in 1992, 2008 and 2012 broken down by age for Australian Male. Describe your graph.
your client is considering two investments and has asked you to evaluate these alternatives. provide financial and risk
A group of teenagers were monitored closely over the period of several weeks to measure how frequently they watched violent television programs.
question a study is conducted comparing hdl cholesterol levels between men who exercise regularly and those who do
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