8.961 rounded to the following tenths place

9.0

Step-by-step explanation:

since we are rounding to the tenths, we look at the hundredths digit (2nd to the right of decimal point )

if the hundredths place is between 5 and 9 inclusive, then the tenths place adds one

if the hundredths place is lower than 5 then the tenths digit stays the same.

8.961

since 6 is greater than 5, we round the 9 up, making it ten, or 0 and adding one to the digit to the left, giving us 9.0

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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