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siniylev [52]
3 years ago
6

A collection of field goal kickers are divided into groups 1 and 2. Group i has 3i kickers. On any kick, a kicker from group i w

ill kick a field goal with probability 1/(i 1), independent of the outcome of any other kicks. (a) A kicker is selected at random from among all the kickers and attempts one field goal. Let K be the event that a field goal is kicked. Find P[K]. (b) Two kickers are selected at random; Kj is the event that kicker j kicks a field goal. Are K1 and K2 independent

Mathematics
1 answer:
Brut [27]3 years ago
7 0

Answer:

a. 7/18

b. K1 and k2 are not independent

Step-by-step explanation:

See attachment please

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7 0
3 years ago
Subtract x^2-6x+4 from 2x^2+4x-8
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3 0
2 years ago
If you mix 1 cup of chocolate chips and 1 cup of raisins what is the percentage of chocolate chips
algol13

Answer:

50%

Step-by-step explanation:

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4 0
3 years ago
Zara has forgotten her 4-digit PIN code.
djverab [1.8K]
800 different sets of digits


Since the first digit is a factor of 20, the factors of 20 are 1,2,4,5,10,20. We only need the single digit factors which are 1,2,4 and 5. These 4 numbers can be permuted in 1 way for the first digit, so we have ⁴P₁.
For the second digit, we have 10 digits permuted in 1 way, ¹⁰P₁ and also for the third digit, we have 10 digits permuted in 1 way, ¹⁰P₁ and for the last digit, which is divisible by 5, it is either a 0 or 5, so we have two digits permuted in 1 way, ²P₁.
So, the number of different 4 digit number that Zara'2 4-digit PIN code could be is ⁴P₁ × ¹⁰P₁ × ¹⁰P₁ × ²P₁ = 4 × 10 × 10 × 2 = 800 different sets of digits
4 0
3 years ago
Read 2 more answers
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