Answer:
Step-by-step explanation:
-Given the population mean is and the standard deviation is , we calculate the z-scores using the formula:
#The z-score for 1910 can be calculated as:
#The z-score for 1230can be calculated as:
#The z-score for 2190 is calculated as follows:
#The z-score for 1380 is calculated as:
You have to add the like terms then it will equal y=2
Answer:
30% Increase
Step-by-step explanation:
we know 3 is 30% of 10 and 10+3=13 so we know that 13 is a 30% increase of 10.