Question

For this lab we will use NFL Scouting Combine data for drafted running backs and wide receivers from years 2012-2014. The combine is a series of tests to evaluate college football players ahead of the NFL Draft. The dataset is available on Canvas. To perform the hypothesis tests below, you will need to upload the data to StatKey and select the appropriate columns. For guidance, refer to the StatKey guide.

The dataset contains the following variables: year Year player participated in combine

position Running Back (RB) or Wide Receiver (WR)

height height in inches

weight weight in pounds

fortyyd forty yard dash time in seconds

threecone threecone time in seconds (run between 3 cones in an L shape)

vertical vertical jump height in inches

broad broad jump distance in inches

bench number of bench press repetitions with 225lbs

round round player was drafted (1-7)

Activity 2: How fast are NFL players? Prior to 2012, the average forty yard dash time for running backs and wide receivers was 4.53. On average, were NFL players between 2012-2014 significantly faster than in previous years?

1. State the hypotheses of interest.

2. What is the notation and value of the sample statistic?

3. Use StatKey to generate a randomization distribution for these hypotheses. What is the p-value?

4. Interpret the p-value.

5. What is the formal conclusion and conclusion in context using a significance level of 0.05?

Activity 3: Are running backs shorter than wide receivers? Assuming that running backs are group 1 and wide receivers are group 2, determine if, on average, running backs are shorter than wide receivers.

1. State the hypotheses of interest.
2.What is the notation and value of the sample statistic?

3. Use StatKey to generate a randomization distribution for these hypotheses. What is the p-value?

4.Interpret the p-value.

5. What is the formal conclusion and conclusion in context using a significance level of 0.05?

Answer 1