Aspinner is divided into 5 equal sections numbered 1 through 5.
what is the probability of the event that is complementary to the event of spinning an even number on the spinner?
a. 1/5
b.2/5
c.3/5
d.4/5
a box contains letter tiles labeled either x or y. the probability of drawing a tile labeled y is 90 percent.
what is the probability of drawing a tile labeled x?
a.
10%
b.
30%
c.
60%
d.
90%

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: