Use the Following Information for Questions:
a Researcher Wants $µ_1$

Multiple Choice

Use the following information for questions:
A researcher wants to assess if there is a difference in the average life spans between men and women in Japan. Let $µ_1$ = average life span of Japanese women and $µ_2$ = average life span of Japanese men. A random sample of 10 women showed an average lifespan of 83 years, with a sample standard deviation of 7 years. A random sample of 10 men showed an average lifespan of 77 years, with a sample standard deviation of 6.4 years. Assume that life spans are normally distributed and that the population variances are equal.
-For a significance level of $\alpha$ = 0.05, are the results statistically significant?

A) No, results are not statistically significant because the p-value < 0.05.
B) Yes, results are statistically significant because the p-value < 0.05.
C) No, results are not statistically significant because the p-value > 0.05
D) Yes, results are statistically significant because the p-value > 0.05.