1. When evaluating the teaching effectiveness of instructors inan academic department of public health, the average test scores obtained by students in their 15 biostatisticsclasses was recorded to be 78with a standard error of 2.5.The national average for similar biostatistics courses is known to be 70. Based on this information, can you conclude that instructors in this specific department of public health perform score better than the national average. Justify your conclusion with statistical reasoning by conducting an appropriate test of hypothesis

Research hypothesis:

H1:H0:

Test statistic:

p-value (compare with alpha = .05):

Conclusion in terms of the problem: