If 80% of the registered voters cast 335, 200 votes in an election, how many registered voters are there? in another election 90% of the registered voters cast 377, 100 votes. how do the number of registered voters compare in the two elections?

1st election: 268,160, 2nd election: 303,390 Comparison: Difference of 35230

Step-by-step explanation:

To find 80% of 335,200 you have to multiply 0.80 by 335,200 to get 268,160. Then to find 90% of 337,100 multiply 0.90 by 337,100 to get 303,390. They have a difference of 35230.

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b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: