If S_6=922.32 and r = 4/5, what is the value of a₁?
1 answer:
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Answer:
The probabilty of having at least one pink bulb if 4 bulbs are purchased is 13%.
Step-by-step explanation:
The proportion of pink bulbs is p=0.4.
If X is the amount of pink bulbs in a group of 4 bulbs, we can model this as a binomial distribution problem.
The probability that at least one of the bulbs is pink is P(X≥1)
The probabilty of having at least one pink bulb if 4 bulbs are purchased is 13%.
It is given that there are 4 cards with numbers 2, 5, 6, and 8.
1) It is required to list all the numbers available when two cards are drawn one after the other and the second card is placed at the right of the first card drawn.
To do this, find the sample space of the draw which are:
Hence, the required numbers.
2) Recall that probability is the ratio:
From the numbers listed, notice that the total number of possible outcomes is 12.
Since event A is "obtained number is even", notice that the number of even numbers in the listed numbers is 9 (26,28,52,56,58,62,68,82,86).
Hence, the number of favorable outcomes is 9.
Substituting into the probability ratio gives the required probability:
Check the number of numbers that are a multiple of 5, notice that they are 3 (25,65,85).
Hence, the required probability of event B is:
The number of multiple of 3 in the listed numbers is 0 since there is no number that is a multiple of 3.
Hence, the required probability of event C is:
Answers:
1) {25,26,28,52,56,58,62,65,68,82,85,86}
2) P(A) = 3/4
P(B) = 1/4
P(C)= 0