3(34+6)=90
add 34 and 6 together in the parenthesis and then multiply the sum by 3.
Answer:
Step-by-step explanation:
Answer: 0.0433
Step-by-step explanation:
Given: Sample size : n= 133
The number of females in sample = 65
Then the proportion of females : 
The formula to calculate the standard error of the proportion is given by :-


Hence, the standard error of the proportion of females is 0.0433.
Answer:
B
Step-by-step explanation: