You randomly select three cards from a standard deck of 52 playing cards, what is the probability that all three cards are face cards when you do not replace each card before selecting the next card? Round your answer to the nearest tenth.

1%

Step-by-step explanation:

out of 52 cards, there are 4 jacks, 4 queens and 4 kings; these are the 'face cards'

P(3 face cards, no replacement):  12/52 × 11/51 × 10/50

P = .00995 which is, rounded to nearest tenth, 1%

do you mean add both of the equations together

because if you do the answer is 10x-5

step-by-step explanation:

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: