Amusic teacher grades on an e (excellent), s (satisfactory), and u (unsatisfactory) grading scale. a final score of more than 92 earns an e. a final score of 60 or less earns a u. any other score earns an s.
zeb says that the inequality x> 60 represents a grade of s. is zeb correct? explain using a complete sentence.

mostly correct

Step-by-step explanation:

instead of x>60 it should be greater than or equal to since reciving a 60 would result in a S.

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:

d is the only accurate one

step-by-step explanation: