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A company's sales force makes 400 sales calls, with 0.15 probability that a sale will be made on a call.
What is the probability that between 50 (inclusive) and 70 (inclusive) sales will be made? What is the probability that less than 70 sales will be made? What is the probability that greater than 50 but less than 70 sales will be made? What is the probability that more than 70 sales will be made? What is the probability that exactly 70 sales will be made?
Construct a contingency table for the data.- Compute the risk of lung cancer for bird owners and for those who had never kept a bird.
coefficient of variation and standard deviation are two measures of dispersion or spread among the data values. lets
Create raw score predictions on criterion variable for persons with Z scores on predictor value of -2,-1,0,+1,+2.
these cars would fall into the 22 to 27 mpg range? Compute the proportion of cars that get more than 28 mpg. What proportion of cars would get less than 23 mpg?
Group 2 data [ 141, 139, 172, 131, 150, 125. Assume normal distribution, with equal variance in the two groups and conclusion for a=0.05.
A sales person at a company sold 6,903,435 of hardware equipment last year, a figure that represented the eighth decile of sales performance at the company. What can you conclude about the salesperson performance?
consider an x-bar chart where the x-bar statistic is normally distributed and an associated x-bar control chart exists.
a newspaper selected a simple random sample of 1600 readers. they asked whether the paper should increase its coverage
Explain the difference between the information given by the tests of statistical significance t and Chi Square, and measures of association Cramer's V, Gamma and Pearson's correlation coefficient, r.
Consider the results of the hypothesis test you conducted above. Which of the two types of errors could you have committed? Explain the ramification of committing such an error in the context of this scenario.
Find the mean and standard deviation of the sampling distribution of y‾.- Draw a sketch of the sampling distribution of y‾. Locate the mean on the graph.
Compute the means for the following set of scoresusing IBM SPSS software. The data sets can be found through the Sage Materials in the Student Textbook Resource Access link, listed under Academic Resources. The following set of scores are saved as..
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