Rounding to the first decimal place, calculate the mean for the following distribution of homicide rates in the 12 metropolitan areas with the lowest homicide rates (homicides per 100,000 population) in the U. S. in 2017. Mesa, AZ: 4.1 Seattle, WA: 3.8 Portland, OR (tie): 3.4 New York, NY (tie): 3.4 Virginia Beach, VA: 3.3 San Jose, CA: 3.1 El Paso, TX: 2.9 Austin, TX: 2.6 San Diego, CA: 2.4 Suffolk County, Long Island, NY: 2.2 Montgomery County, MD: 2.0 Fairfax, VA: 1.7

Solution :

Given :

X = homicide rate (homicides per 100,00 population)

n = 12 = metropolitan areas

Area                          X (homicides per 100,000 population)

Mesa, AZ                   4.1

Seattle, WA               3.8

Portland, OR (tie)      3.4

New York, NY(tie)     3.4

Virginia beach, VA   3.3

San Jose, CA           3.1

EI, Paso, TX             2.6

Austin, TX                2.6

San Diago, CA         2.4

Suffolk County         2.2

Montgomery, MD    2.0

Fairfax, VA              1.7

Therefore, the mean of X =

                                          = 2.9

Therefore, the mean of homicide rater in the 12 metropolitan areas is 2.9 homicide per 100,000 population.

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.