Consider the hourly labor costs (in dollars) for a random sample of small construction projects summarized in the frequency table below. Lower Bound Upper Bound Class Midpoint Frequency 18.505 19.505 19.005 6 19.505 20.505 20.005 24 20.505 21.505 21.005 17 21.505 22.505 22.005 16 22.505 23.505 23.005 7 23.505 24.505 24.005 3 24.505 25.505 25.005 2 The mean and standard deviation estimated from these data are $21.15 and $1.42, respectively. Are the above data significantly different from a normal distribution? Use .05 level of significance.

Consider the hourly labor costs (in dollars) for a random sample of small construction projects summarized in the frequency table below. Lower Bound Upper Bound Class Midpoint Frequency 18.505 19.505...

Consider the hourly labor costs (in dollars) for a random sample of small construction projects summarized in the frequency table below.

Lower Bound	Upper Bound	Class Midpoint	Frequency
18.505	19.505	19.005	6
19.505	20.505	20.005	24
20.505	21.505	21.005	17
21.505	22.505	22.005	16
22.505	23.505	23.005	7
23.505	24.505	24.005	3
24.505	25.505	25.005	2

The mean and standard deviation estimated from these data are $21.15 and $1.42, respectively. Are the above data significantly different from a normal distribution? Use .05 level of significance.

May 26, 2022

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Consider the hourly labor costs (in dollars) for a random sample of small construction projects summarized in the frequency table below. Lower Bound Upper Bound Class Midpoint Frequency 18.505 19.505...

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