Of 390 randomly selected medical students, 23 said that they planned to work in a rural community. Find a 95 confidence interval for the proportion of all medical students who plan to work in a rural community.
A) 0.0312 to 0.0868 B) 0.0394 to 0.0786 C) 0.0356 to 0.0824 D) 0.0283 to 0.0897
Q. 2If a person is randomly selected, find the probability that his or her birthday is not in May. Ignore leap years.
A) 0.085 B) 0.915 C) 0.093 D) 0.917
Q. 3In a designed experiment, explain the difference between the treatments and the factors.
What will be an ideal response?
Q. 4In a survey of 280 adults over 50, 70 said they were taking vitamin supplements. Find the margin of error for the 99 confidence interval used to estimate the population proportion. Give your answer as a percentage.
A) 5.37 B) 7.05 C) 19.7 D) 9.8 E) 12.9
Q. 5The probability that Luis will pass his statistics test is 0.44. Find the probability that he will fail his statistics test.
A) 2.27 B) 0.56 C) 0.79 D) 0.22
Q. 6Give an example of a designed experiment. In your experiment, identify the experimental units, the response variable, the factor(s), the levels of each factor, and the treatments.
What will be an ideal response?
Q. 7Of 94 adults selected randomly from one town, 62 have health insurance. Find a 90 confidence interval for the proportion of all adults in the town who have health insurance.
A) 0.564 to 0.755 B) 0.534 to 0.785 C) 0.546 to 0.773 D) 0.579 to 0.740
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