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A newspaper article reported that a poll based on a sample of 1150 residents of a state showed that the state's Governor's job approval rating stood at 58%. They claimed a margin of error of ±3%. What level of confidence were the pollsters using?
What is the conditional probability of a manager in the Division of Community Services reporting workplace sexual harassment?
compare and contrast the mean the median and the mode. which statistic is not as beneficial for extreme scores and
An airline has a policy of booking as many as 17 persons on an airplane that can seat only 16. Find the probability that if the airline books 17 people, not enough seats will be available.
A manager wishes to find out whether there is a relationship between the number of radio ads aired per week and the amount of sales (in thousands of dollars) of a product. The data for the sample are shown below. a) Draw the scatter plot for the v..
The structure of a two factor study can be presented as a matrix with levels of one factor determining the rows and the levels of the second factor determining the columns. With this structure in mind, describe the mean differences that are evalua..
From the given polynomials, identify the polynomials of degree one. A function gives the value of C as 2 × (22/7) × r. Find C when r = 7 cm and r = 91 cm.
Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5
Her results (in hours until turning a particular shade of brown) are in the table below. At ∞= .01, did she see a difference between the two treatments?
Sketch a curve, point out the distribution (i.e., normal , student T, Chi square), critical region(s). test statistics, critical values(s) and n p-value?
Suppose 3 high school students are randomly selected from different schools. What is the probability that all graduate?
Assume battery life is normally distributed. Batteries in the lower 10% do not meet minimum life requirements. What is the minimum life requirement for a battery?
What would be a good example of a null and alternative hypotheses for a decision relevant in life? What Type I and Type II errors could occur with your decision-making process?
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