Data Analysis Problem Set 2

A game warden samples \(18\) fish caught at a national park on a given weekend. The sampled fish have an average length of \(8.6\) inches. The warden then calculates the margin of error to be \(1.8\) inches. Which of the following is NOT a possible measure of the length of average fish in the population?

The given table represents the number of people categorized by their dietary preference (vegetarian or non-vegetarian) and their favorite meal (breakfast, lunch, or dinner). Given that the students are vegetarian, what is the probability of selecting two students that don’t prefer breakfast?

Sample 1:

1.2, 2.3, 3.1, 4.5, 5.6, 6.8

Sample 2:

2.0, 3.1, 3.9, 5.3, 6.4, 7.6

In the given samples, what is the difference in standard deviation?

A scientist is testing two properties in a population: a salamander can have dorsal stripes, ventral spots, both, or neither property. In a sample of salamanders, the scientist finds that \(10%\) have neither property, \(30%\) have dorsal stripes, and \(76%\) have ventral spots. What is the probability that a given salamander in the sample has both dorsal stripes and ventral spots?

A student tracks their time to complete a puzzle, and finds the following times for each attempt in minutes:
10 min
15 min
20 min
25 min
30 min
The student then realizes that the 20 minute time was a fluke, removing it from the data set. Which of the following puts the statistics in order, ranging from the greatest change in minutes to the least change in minutes?