Mathematics, 23.07.2020 01:01, ARandomPersonOnline

The hourly rate of substitute teachers for 12 local school districts is given below. Assuming that the data are normally distributed, use a TI-83, TI-83 plus, or TI-84 calculator to find the 90% confidence interval for the mean hourly rate of substitute teachers in the region. Round your answers to two decimal places and use ascending order. 20 13 21 18 19 22
19 15 12 12 18 21

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The hourly rate of substitute teachers for 12 local school districts is given below. Assuming that t...