General Principles of Intellectual Property: Concepts of Intellectual Proper...
Running heart rate Jose is a physician who is researching .pdf
1. Running heart rate ~ Jose is a physician who is researching to what extent running affects heart
rate in 18-25 year-olds. He believes that less than 50% of 18-25 year-olds will experience a heart
rate of more than 120 beats per minute (bpm) after running a mile.Jose recruits a random sample
of 336 people between the ages of 18 and 25 to run a mile and records their heart rate. He finds
that 144 have a heart rate of more than 120 bpm.Round all calculated answers to 4 decimal
places.1. Correctly state the null and alternative hypotheses.
0:H0:p ? = < > :HA:p ? = < >
2. If you assume that the observations in the sample are independent, what is the smallest value
the sample size could be to meet the conditions for this hypothesis test?
A. 25
B. 20
C. 10
D. 144
E. None of the above
3. Calculate the test statistic for this hypothesis test. 4. Calculate the p-value. 5. Which of the
statements below are correct interpretations of the p-value? You should choose all that are correct
interpretations.
A. The p-value is the probability of obtaining a sample result at least as or more in favor of the
alternative hypothesis if the null hypothesis is true.
B. This p-value suggests that based on this sample there is some evidence that the null model is
not compatible with the data.
C. If we repeat the hypothesis test many times, the p-value is the proportion of times our test
statistic will be close to the expected value of the null distribution.
D. This p-value suggests that based on this sample there is very strong evidence that the null
model is not compatible with the data.
E. The p-value is the probability that the null hypothesis is true.
F. The p-value is the proportion of times in repeated sampling that the alternative hypothesis is
true.
