Fill in the boxes below. Mathematical Expression x+ 20 xi N 0 √N Percentage Confidence Level 99.7% Za 2 1
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- The cash register receipts each day last week at a coffee shop were $1,845. $1,520. $1,438, $1,682, $1,850, $2,721, $2,539. Find the (a) mean, (b) median, and (c) mode.What is the multiplier for an interval that estimates the proportion with a. 88% confidence? b. 98% confidence?Find the test statistics, p-value and confidence interval using statcrunch or excel. thank you
- Translate the statement into a confidence interval. Approximate the level of confidence. In a survey of 1300 adults in a country, 70% think teaching is one of the most important jobs in the country today. The survey's margin of error is ± 3%.Ethan is surveying students who are interested in watching television (TV) shows. Ethan has surveyed 504 students at Northwestern Business School (NBS), and found that 315 students watch more than 40 hours of TV shows on a monthly basis. How many additional students would be needed in the sample to estimate the proportion of all NBS students who watch more than 40 hours of TV shows each month within +/- 3 percent with 99 percent confidence?Use the sample data and confidence level given below to complete parts (b) A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 912 and x = 587 who said "yes." Use a 95% confidence level. b. The value of the margin of error E is