8. The 150 students in the band will attend an awards assembly. A random survey of 30 was done to see what
type of pizza they would order.
10 Pepperoni
15 Cheese
• 5 Hamburger
Based on the survey results, which of these is the best
prediction of the types of pizza wanted by the 150
students?
A. There are 40 students who want pepperoni
B. There are 100 students who want either cheese
or hamburger
C. There are 10 more students who will want cheese
than hamburger
D. There are 5 more students would want pepperoni
than hamburger

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:

step-by-step explanation:

13664

step-by-step explanation:

=cross multiply

=100 x = 13664