Mathematics, 03.08.2021 15:20, baisydravoo
In a certain region, 25% of people over age 50 didn't graduate from high school. We would like to know if this percentage is the same among the 25-30 year age group
(a) How many 25-30 year old people should be surveyed in order to estimate the proportion of non-grads to hin 4%, with 8%, confidence?
(b) Suppose we wanted to cut the margin of error to 3%. How many people should be sampled now?
(c) what sample size is required for a margin of error of 8%?
Answers: 1
Mathematics, 21.06.2019 22:00, prelogical
Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?
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Mathematics, 22.06.2019 00:30, aleilyg2005
Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm2. what is the area of the second triangle?
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In a certain region, 25% of people over age 50 didn't graduate from high school. We would like to kn...
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