Question

Resting heart rate is known to be 71 beats per minute on average, with a standard deviation of 4 beats per minute. A set of researchers believe that heart rate will increase in men when they are watching a horror movie. Conduct a hypothesis test to determine if there is a significant increase in heart rate in men during a horror movie. Specify the null and alternative hypotheses and the significance level.

Answer 1

To conduct a hypothesis test to determine if there is a significant increase in heart rate in men during a horror movie, we need to set up the null and alternative hypotheses and specify the significance level.

Step-by-step explanation:

In order to conduct a hypothesis test to determine if there is a significant increase in heart rate in men during a horror movie, we need to set up the null and alternative hypotheses and specify the significance level.

Null Hypothesis:

The null hypothesis states that there is no significant increase in heart rate in men during a horror movie. In statistical notation, this can be written as H0: μ = 71 bpm, where μ represents the population mean heart rate.

Alternative Hypothesis:

The alternative hypothesis states that there is a significant increase in heart rate in men during a horror movie. In statistical notation, this can be written as Ha: μ > 71 bpm.

Significance Level:

The significance level, denoted by α, is the probability of making a Type I error (rejecting the null hypothesis when it is true). It is typically set at 0.05 (or 5%) in hypothesis testing.