b. Using the formula we learned in class during module 3 (Z = s/Vn Sh), find the Z-value associated with our collected sample. We will use "s" as opposed to o since we do not know what the population standard deviation is. Round your Z-value to 2 decimal places
So I decide to go to Cinnaholic once day and I buy two cinnamon rolls. I notice that these cinnamon rolls do not appear to be the same size, so naturally I eat the smaller one first and then eat the bigger one. As I am sitting on my couch stuffed from those delicious rolls, I start to think, "I wonder if Cinnaholic makes their cinnamon rolls to the size they claim them to be." Of course I have to go and purchase several rolls, weigh them (in ounces), and eat them. 30 pounds later, I have collected all of my data and tabulated it below: Cinnamon Roll Weight 5.6, 6.3, 6.1, 6.1, 5.9, 5.8, 6.0, 6.0, 6.1, 6.3, 6.3, 6.3, 6.4, 5.8, 5.7.
Cinnaholic claims that their Cinnabon rolls are made to weigh 6.1 ounces on average.
The mean is 6.0467
Standard deviation: 0.2475
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