Answer:
n=40 boys
Step-by-step explanation:
-Margin of error is given by the formula:
-The z score for a probability of 92% is 1.75
#We make n the subject of the formula and substitute at a 92% confidence:
Hence, he needs approximately 40 boys for the study
Answer:
-12
Step-by-step explanation:
8+(-12)=-4
Answer:
The number (x) is 127.1
Step-by-step explanation:
4% of a number (x) is equal to;
31% of 16.4
i.e 0.04x = 5.084
x = = 127.1
The number (x) is 127.1
Answer:
15 different combinations
Step-by-step explanation:
5*3=15
Answer:
the answer is easy.
Step-by-step explanation: