Consider the random variable X that follows an exponential distribution, with μ = 20. The standard deviation of X is σ = . The parameter of the exponential distribution of X is λ = . What is the probability that X is less than 10? P(X < 10) = 0.7981 P(X < 10) = 0.2212 P(X < 10) = 0.4908 P(X < 10) = 0.3935 What is the probability that X is between 30 and 35? P(30 < X < 35) = 0.0493 P(30 < X < 35) = 0.3262 P(30 < X < 35) = 0.2231 P(30 < X < 35) = 0.1738

answer: ask

step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

answer: when you burn wood, the carbon reacts with the oxygen in the air to create ash and smoke. that is a permanent change you cannot undo that.

step-by-step explanation: