Kelie randomly chooses a number 1 to 10 what is the probability she chooses a number less than 3

Step-by-step explanation:

Given : The total  numbers from which Kelie randomly chooses a number = 10

The numbers less than 3 = 1,2

Now, the probability she chooses a number less than 3 will be :-

Hence, the probability she chooses a number less than 3

answer: it's d

step-by-step explanation:

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: