? 78
79
80
81
82
83
84
V
W

Write your answer as an integer or a decimal, or mixed number in simplest form.
__

78 79 80 81 82 83 84 V = 85 W = 86 Midpoint of VW = 85.5

Step-by-step explanation:

V + W is devided by 2

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:

it would open into a square depending on the type of envelope i’m not sure about the second part