If you need help Joe is measuring the widths of doors he bought to install in an apartment complex. He measured
72 doors and found a mean width of 36.1 inches with a standard deviation of 0.3 inches. To test if
the doors differ significantly from the standard industry width of 36 inches, he computes a z-
statistic
ZE
X-H
//n
What is the value of Joe's z-test statistic?
O 1.81
O 2.83
о
-2.83
O 1.81
O
RI
a
11:25 AM
6/23/2021
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70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?