Answer:
The value of the test statistic 
Step-by-step explanation:
From the question we are told that
The high dropout rate is
% 
The sample size is 
The number of dropouts 
The probability of having a dropout in 1000 people 
Now setting up Test Hypothesis
Null 
Alternative
The Test statistics is mathematically represented as

substituting values


162/60 = 2.7 heartbeats per second
4/50 as a decimal is .08
Divide 4 by 50
Answer:
c
Step-by-step explanation:
you have a calculator dont you?
(-3)^2 = 9
-3^2 = -9
Hope this helps!