The Ground Nugget Potato Company wants to sell its potatoes overseas in brown octagonal gift boxes. To create the design and make sure the boxes have the proper
thickness, researchers need to estimate the average weight of the company's potatoes.
A random sample of 100 potatoes has a mean of 700 grams. Using previous research,
you assume a population standard deviation o of .89 grams. (As you continue to study
statistics you will look at how to estimate o, which is what researchers do in the real
world. For now, assume you know it.)

B. Give the minimum sample size for creating a 95% confidence interval with a
margin of error of .5 grams.

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.