Answer:
97.3%
Step-by-step explanation:
Let the three bulbs be A, B and C respectively.
Let P(A) denote the probability that the first bulb will burn out
Let P(B) denote the probability that the second bulb will burn out
Let P(C) denote the probability that the third bulb will burn out
Now, we are told that Each one has a 30% probability of burning out within the month.
Thus;
P(A) = P(B) = P(C) = 30% = 0.3
Now, probability that at the end of the month at least one of the bulbs will be lit will be given as;
P(at least one bulb will be lit) = 1 - (P(A) × P(B) × P(C))
P(at least one bulb will be lit) = 1 - (0.3 × 0.3 × 0.3) = 0.973 = 97.3%
Answer:
3a: 2c
Step-by-step explanation:
account b has 2.6% more interest than account a
Subtract 59.99 from 64.19.
64.19 - 59.99 = 4.20
<u>The tax she paid was $4.20, so now we need to find the percentage.</u>
Divide 4.20 by 59.99.
4.20 ÷ 59.99 = 0.07
Multiply 0.07 by 100 to find the percentage.
0.07 × 100 = 7
<u>The sales tax in the area was 7%.</u>
The interquartile range is 24...
