Mathematics, 12.04.2020 23:42 Angelanova69134
A 2009 nationwide random survey of 1500 adults asked the open-ended question, “What do you think is the most important problem facing this country today?” Sixty-nine percent responded with some form of economic problems (such as economy in general, unemployment/jobs, etc). Do these data provide good evidence that more than 2/3 of all adults believe that economic problems is the most important problem facing this country today?
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Mathematics, 21.06.2019 13:00, krishawnnn
Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?
Answers: 1
Mathematics, 21.06.2019 14:00, kassidyopry15
The table shows the distance traveled over time while traveling at a constant speed.
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Mathematics, 21.06.2019 18:40, calebhoover03
2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
Answers: 1
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