Find the area under the normal curve.Find the percent of the area under a normal curve between the mean and 3.01 deviations from the mean.
A. 49.86%
B. 99.87%
C. 50.13%
D. 49.87%
Answer: D
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Answer the question.Double blinding is used in an experiment to avoid which of the following problems?
A. If improvement is observed in a patient, it is difficult to know whether this is due to the treatment or the placebo effect B. If the patient knows that he received the placebo and not the treatment he may be angry and fail to tell the truth C. If the researcher knows that the patient received the treatment, the researcher may also experience health changes D. If an experimenter knows whether the patient has received the treatment or the placebo, this may influence how he or she questions the patient
Find any relative maximum or minimum points of the given function.y = x4 - 2x2 - 9
A. Maxima at (1, -10), (-1, 8); minimum at (0, -9) B. Minimum at (0, -9), maximum at (1, -10) C. Minima at (1, -10), (-1, -10); maximum at (0, -9) D. Minimum at (-1, -10), maximum at (1, -10)
Divide.
A. 1636 B. 1656 R 41 C. 1646 D. 1651 R 33
Solve the equation by factoring.x2 + 7x - 18 = 0
A. {9, 2} B. {-9, 2} C. {9, -2} D. {-9, 1}