Medical research has shown that repeated wrist extensions beyond 20 degrees increase the risk of wrist and hand injuries. Each of 24 students at a university used a proposed new computer mouse design, and while using the mouse, each student’s wrist extension was recorded. Data consistent with summary values given in a paper are given here.
26 | 28 | 23 | 25 | 27 | 25 | 25 | 24 | 24 | 24 | 25 | 28 |
22 | 25 | 24 | 28 | 27 | 26 | 31 | 25 | 28 | 27 | 27 | 25 |
(a)
Use these data to estimate the mean wrist extension for people using this new mouse design using a 90% confidence interval. (Round your answers to three decimal places.)
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