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A laboratory worker finds that the 3% of his blood samples test positive for the HIV virus. In a random sample of 70 blood tests, what is the mean number that test positive for the HIV virus? (Round your answer to 1 decimal place)
the personnel director of a large corporation wishes to study absenteeism among clerical workers at the corporations
Tires a and tires b have an average lifespan of 50,000 miles. Tires A was found to have a standard deviation of 12,000 miles and tires b was found to have a standard deviation of 8,000 miles. Which tires are more reliable?
Using the sample mean and sample standard deviation, calculate the expected frequencies, assuming that the null hypothesis is true.
What is the median lifetime of these phones (in years)? In addition to selecting one of the multiple choice answers, describe what you did step-by-step to arrive at a solution.
What is the your estimate of Fair Value for Sally, if the required return is estimated at 10% annually?
Families of size 4 spent a population mean of $360 on a visit to an amusement park, standard deviation of $50 in October 2000. Operators want to know whether families will spend more in 2001.
What are the 4 Ts (like Time and Theme) when running for POTUS (President of the United States)?
Suppose we randomly select two students from a mathematics class and asked whether the student selected each time is a member of a math-club or not. Write all the outcomes for this experiment. Draw the Venn and Tree diagrams for this experiment.
Describe the type of relationship that exists between the Invoice Charges and the Distance travelled. Report the estimated linear regression equation that related Invoice charges to Distance travelled. Interpret the slope coefficient of the regressio..
if there are 50 nurses in a nursing home how would you randomly select 10 of them to participate in your study? please
in a doctors office there are nine nurses and eight physicians. six nurses and four physicians are females. if a person
What are the null and alternative hypotheses?- Given that a computer fails the test, what would you decide? What if it passes the test?
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