Answer:
0.8397
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
The order in which the cards are chosen is not important. Also, they are drawn without replacement. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
What is the probability that at least one of the cards drawn is a spade?
Either none is a spade, or at least one is a spade. The sum of the probabilities of these outcomes is 1.
The standard deck has 52 cards, of which 13 are spades. So
Probability that none are spades:
Desired outcomes:
6 cards from a set of 52 - 13 = 39. So
Total outcomes:
6 cards from a set of 52. So
Probability:
Probability that at least one is a spade:
1 - 0.1603 = 0.8397
The answer is 0.8397
Answer:
DE=19
Step-by-step explanation:
Mean Base Theorem
Step-by-step explanation:
2x+2+6x+4=120°(exterior angle of a triangle is equal to the sum of its opposite interior angle)
8x+6=120
8x=120-6
8x=114
x=114/8
x=14.25
now,
angleA=2x+2
hope it helps.
Answer:
Stratified sampling technique.
Step-by-step explanation:
The type of sampling technique being used is stratified sampling technique. This is a type of sampling where the population under study has a number of distinct categories or sub-groups in which it is divided into. These categories or sub-groups are called strata and are defined by certain characteristics related to the variable or particular finding under interest. The sampling frame can be organized into separate mutually exclusive strata and then each ‘stratum’ is sampled as an independent sub-population out of which individual elements can be randomly selected. In this case, each unit in a stratum, that is, each element in a group has a chance of being selected. With stratified sampling, the best result occurs when elements within strata are internally homogeneous.
Answer is 9.12 thanks for using brainly
