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Suppose the scores for a particular test are normally distributed with mean 76 and standard deviation 6. The probability that a student will score 89 or higher is:
a) 1.5%
b) 48.5%
c) 98.5%
d) 1.54%
Which of the examples below represent the Ratio level of scaling?
What is the distribution of X? State its mean and variance.
question a dam can be lowered by 4 meters using spillway a in 4 hours or by spillway b in 6 hours also lowering the
in a study of the effectiveness of garlic for lowering cholesterol 17 subjects were treated with garlicin which is
The fill volume of cans produced by a certain machine is normally distributed with mean 12 oz and standard deviation .03 oz. [4] a. What proportion of cans contain less than 12 oz?
Twelve cases of leukemia are reported in people living in a particular census tract over a 5-year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cancer-incidence rates?
Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 41% of the viewing audience in the area. In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station. What is t..
In study of a clinical for an allergy drug 115 of the 204 subjects reported experiencing important relief from their symptoms.
The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your rea..
for the standard normal distribution shown on the right find the probability of z occuring in the indicated region.its
a production line operation is designed to fill cartons with laundry detergent to a mean weight of 32 ounces. a sample
To determine if this is evidence that students perform worse under uncomfortable conditions, The P-value of a test
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