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:
Answer:
60inces
Step-by-step explanation:
As we already have the model that describes the change of the population in Italy in terms of the years that have elapsed, we only have to replace the conditions that are requested in that equation.
Therefore to find the population of Italy in the year 2000 (t = 10 years) substitute t = 10 in the equation and have:
million people
To find the population of Italy in 2008 (t = 18 years)
substitute t = 18 in the equation and have:
million people
To predict the population in Italy for 2015 and 2020 with this model, we substitute in the equation t = 25 and t = 30
t = 25
million people
t = 30
million people
The 8 pound bag is better.
Divide the price by the weight, and you get the price per pound, which you can compare directly.
8 pound: 7.40/8 = $0.93 per pound
4 pound: 5.38/4 = $1.35 per pound