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A report states that 40% of home owners had a vegetable garden. How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 3% with 99% confidence?
a large number of people are waiting in line at espresso royale as it often happens at around noon. the barista
two airplanes are flying in the same direction in adjacent parallel corridors. at time t 0 the first airplane is 10 km
you are trying to estimate the number of csn students with iphones. a random sample of 130 students reveals that 65 of
Create a 90% confidence interval for mean score on this placement exam for all students.
A company selects five of the machines at random, thinking all are in working condition. What is the probability that all five of the machines are nondefective?
A survey researcher compares 4 religious groups on their attitudes toward education. 1200 subjects receive the survey and 823 respond. There are 10 items; the likert scale is 1-5. A high positive score indicates a more positive attitude.
Every year sixth-grade students in Ohio schools take proficiency tests.
Formulate the hypotheses to test to see if the mean of the population is at least 12 ounces.
Standard deviation of 0.7 years. If you randomly purchase one item, what is the probability it will last longer than 13 years?
What is the shape of the distribution daily sales revenue from telemarketing operations and what is an estimate of the expected daily sales revenue from telemarketing operations?
the u.s. census bureau collects and analyzes data on numerous aspects of american life by state including the
prove the following statements about conditional probabilitiesfor any two events a and b pab1-pnotab. if a and b are
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