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The severity of side effects experienced by patients while being treated with a particular medicine is under study. The severity is measured on the scale: none, mild, moderate, severe, very severe.
a. Name the variable of interest.b. Identify the type of variable
Is the variable of interest the scale and the variable the side effects?
Difference between the discrete and the continuous random variable.
The Aloha Banking Co. is studying ATM use in suburban Honolulu. A sample of 30 ATM's showed they were used the following number of times yesterday.
Assume that the cost for this type of hospital emergency room visit is normally distributed with a standard deviation of $92. Assume that the following questions about the cost of a hospital emergency room visit for this medical service.
The standard deviation of the population of adult female height scores is 3 inches. A random sample of 50 women yields a mean height of 64 inches. Calculate the standard error of the mean.
How many subsets of S contain either the number 6 or the number 15?
you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a one sample or two sample test?
Probability values based on normal distribution - What can you say about the shape of the distribution of sample mean and find the standard error of the distribution of the sample mean?
Are the following statements a valid pair of null and alternative hypothesis?
To find the necessary sample size to achieve the given level of accuracy of prediction.
At the 5% level of significance, can we infer that branch A has a significantly higher proportion of satisfied customers than branch B?
In baseball, a "no-hitter" is a regulation 9-inning game in which the pitcher yields no hits to the opposing batters. Chance (Summer, 1994) reported on a study of no-hitters in Major League Baseball (MLB).
Is the z value positive or negative? Explain why it should be positive or negative.
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