Mathematics, 18.12.2019 01:31 meeks7442
Chi-squared test: it has been reported that the standard deviation of the speeds of drivers on a rural highway is 6 mph for all vehicles. a driver believes from her personal experience that the standard deviation is greater than 6 mph. a study was conducted and for 30 drivers and the standard deviation was 8.2 miles per hour. at alpha = 0.05, is the driver correct. place either choice a or b in the space provided below.
a) yes, the driver is correct
b) no, the driver is not correct
Answers: 2
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