At an athletics event, gold, silver and bronze medals are awarded. The ratio of gold to silver medals won by a country is 1:3 . The ratio of silver to bronze medals won by the country is 2:3 . Find the ratio of gold to bronze medals won by the country in the form 1 / n .

1:3

Step-by-step explanation:

gold to silver

1:3

silver to bronze

2:3

gold to bronze

1:3

hello,

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: