Answer:
1.875 is the expected number of children the couple will have.
Explanation:
<em>The probability of an event </em><em>X</em><em> is denoted by </em><em>P(X)</em><em>.</em>
Let assume that X is the number of children to whom the couple will give birth. The couple can have at most <em>four children</em> with the following probabilities.
- The couple will have one child if the first is boy, thus:
For one child P(X)=1/2=0.50
- The couple will have two children if the first is girl and the second is a boy, thus:
For two children P(X)=0.5×0.5=0.25
- The couple will have three children if the first two are girls and the third is a boy, thus:
For three children P(X)= 0.5×0.5×0.5=0.125
- The couple will have four children if the first three are girls and the fourth is a boy, or if all the four are girls. thus:
For four children P(X) =(0.5×0.5×0.5×0.5)+(0.5×0.5×0.5×0.5)=0.125
<u>Now calculating the expected number of children the couple will have:</u>
NOTE: Formula is given in the attached pic
Expected number of children = E(X)= (1×0.50)+(2×0.25)+(3×0.125)+(4×0.125)
E(X)= 1.875
The correct answer for the question that is being presented above is this one: "(3) all cells in his body." A man is exposed to large amounts of ultraviolet radiation while sunbathing on the beach. This exposure causes genetic change in the DNA of a skin cell. In the future, this change can be passed on to (3) all cells in his body.
Here are the following choices:
(1) his male and female children
(2) his male children, only
(3) all cells in his body
(4) his skin cells, only
Answer:
classification like student and teacher?
Explanation:
Answer: It is mostly likely B
Explanation: The phylum Arthropoda consists of invertebrate animals with exoskeletons, a segmented bodies, and paired jointed appendages. It is also more advanced than the organisms belonging to A,C, and D. However, I do not think it's E because that mostly includes sea dwelling creatures and this includes evidence of its habitat.