Tara's science project was graded based on creativity, accuracy, and effort. If she received a 9.4 for each of the three citeria, what was her total score

Tara's total score = 28.2

Step-by-step explanation:

We are told that her science project was graded based on creativity, accuracy, and effort.

Now, she received a score of 9.4 for each of these criteria.

Thus;

Score for creativity = 9.4

Score for accuracy = 9.4

Score for effort = 9.4

So,

total score = 9.4 + 9.4 + 9.4 = 28.2

idk

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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