Question

Write the null and alternative hypothesis if the mean heart rate value between female (Uf) and male subjects (Um) is the same

Answer 1

To assess if there is a difference in mean heart rate values between females and males, set the null hypothesis as H0: Uf - Um = 0 and the alternative hypothesis as Ha: Uf - Um != 0. This is a two-tailed test suggesting no difference and difference respectively.

Step-by-step explanation:

When writing the null and alternative hypotheses to determine if the mean heart rate values between female (Uf) and male subjects (Um) are the same, we use the following hypotheses:

• The null hypothesis (denoted as H0) states that there is no difference between the group means, implying Uf = Um. Hence, we would write H0: Uf - Um = 0.
• The alternative hypothesis (denoted as Ha or H1) suggests that there is a difference between the group means. As such, the alternative hypothesis will be Ha: Uf - Um ≠ 0, indicating at least one pair of means is different, and it is a two-tailed test.