Answer:
-1.649313114
Step-by-step explanation:
Sample size, n=171
Sample mean, x=67.6
Standard deviation, s=11.1
Study claims mean pulse 
Null hypothesis


Test statistic is given by
hence

The test static value is -1.649313114
D 837.5 is the right answer
Answer:
132/15
Step-by-step explanation:
8 12/15.......8x15+12=132