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Locate the results of a recent survey in a newspaper, magazine, or Internet article. Outline the survey data so that your peers can understand the variables and results, and then identify at least one key formula from this Module that you could use to evaluate the data. Provide a brief explanation of why you selected the formula you did and why it matters.
A research analyst regresses the number of calls for service (Y) on the Fahrenheit temperature at 4:00 in the afternoon (X). The regression equation finds: Y = 62 + 2.4 X with an r 2 of .67
The rest have no opinion. Suppose that a sample of 100 American adults is quizzed on the subject. What is the probability of the following events?
Analyst computes production cost per unit in each order and averages these to get $50.
Is it necessary to assume a normal distribution on the population to estimate the value of the mean spending per day? Explain.
Choosing the appropriate the sampling design for the given data
Assume that the bricks used are randomly chosen from a population of bricks whose mean length is 10 inches and whose standard deviation is 1/32 inch.
A normal distribution with a mean of 55 and a standard deviation of 6 is evaluated to solve a business problem.
Compute the effect size for each of the following average SAT math scores. Remember SAT math is standardized such that u= 500 and standard deviation =100.
Using standard normal table, show critical value for left-tailed test with α = 0.02.
A point estimate for a parameter is a single number designed to estimate a quantitative parameter of a population, usually the value of the corresponding sample statistic
Describe the factors that might cause variation in weight of Tootsie Rolls during manufacture.
What is your conclusion regarding null hypothesis?
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