Scenario: A random sampleof 10 miniature Tootsie Rolls were taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were as follows:
3.087, 3.131, 3.241, 3.41, 3.70, 3.353, 3.400, 3.411, 3.437, 3.477
a) Construct a 90% confidence intervalfor the true meanweight.
b) What sample size would be necessary to estimate the true weight with an error +/- 0.03 grams with 90% confidence?
c) Discuss the factors which might cause variation in the weight of Tootsie Rolls during manufacturing.
Please view the attachment to see some descriptive statistics related to this problem.
(a) The sample u = 3.3048 and the sample sigma = 0.132.
The 90% CI for the population true mean …
This solution is comprised of a neat, step-wise response which includes all calculations required for solving each part of this statistics-based problem. A Word file is also attached and contains descriptive statistics, such as skewness for example.