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Researchers measured the seated systolic blood pressure of 27healthy white males. The resulting publication reports x = 114 . 9 and s = 9 . 3. (a) Give a 95% con?dence interval for the mean blood pressure in thepopulation from which the subjects were recruited.(b) What conditions for the population and the study design are required by the procedure you used in (a)? Which of these conditions are important for thevalidity of the procedure in this case?
Bingo Hamburger Co has a chain of 12 stores in a large city. Sales figures and profits for the stores are given in the following table. Obtain a regression line for the data & predict profit for a store assuming sales of $10 million.
Obtain a test statistic and p-value. Interpret the results. (c) Is normality assured? (d) Is the difference large enough to be important?
a random variable x takes values between 0 and 4 with a cumulative distribution functionfx x216 for 0 x 4a sketch
the average length of a new born baby is 20 inches with a standard deviation of 1 inch.if n100 what is the mean of the
Develop a mathematical programming model and solve. Discuss your results [total profits, total costs, etc].
For one of the first statistics exam, the coefficient of determination between hours studied and the grade earned was 80 percent. The standard error of estimate was 10.
Assume that a simple random sample of a population has been selected from a population that has a normal distribution, Use the formula for X2( chi square distribution) and the chi-square distribution table
The changing ecology of the swamps in Louisiana has been the subject of much environmental research. One water-quality parameter of concern is the total phosphorous level.
Identify a key variable that you want to predict, and specify at least two variables that you think would be key in making that prediction.
the public library has a board of directors consisting of 6 women and 4 men. a 3-member committee from the board is to
What are the strengths and weaknesses of nonparametric tests? Can the outcomes of the nonparametric tests be generalized to populations?
determine the sample proportions.bdecide whether using the two-proportions z-procedures is appropriate.if soalso do
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