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Cloud [144]
3 years ago
6

A schools principal wants to determine which type of speaker the students prefer to invite to an assembly for the entire student

population which surgery method would produce the best representative sample?
Mathematics
1 answer:
frosja888 [35]3 years ago
7 0
For a survey like this, you want to take a random sample. It would be a good idea to use an alphabetical list of the students. Then, you could randomly select students from the list.

The principal would want to avoid surveying all the same type of students. For example, don't just ask the athletes.
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Answer:

6.37%

Step-by-step explanation:

A deck of cards have 52 cards.  There are 4 suits of 13 card each, those suits are Hearts, Clubs, Diamond and Spades.

The probability that the first card is a heart is:

P(Hearts) = \frac{13}{52}

Now, the probabily that the second card is a diamond is:

P(Diamond | First card is Heart) = \frac{13}{51}

The Probability that the first card is a heart and the second one a diamond is given by:

P(Hearts)×P(Diamond | First card is Heart)

= \frac{13}{52}\frac{13}{51}

= 6.37%

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<em>Without</em> using a truth table:

(<em>p</em> ⇒ <em>q</em>) ∨ <em>q</em>   ⇔   (¬<em>p</em> ∨ <em>q</em>) ∨ <em>q</em>   ⇔   ¬<em>p</em> ∨ <em>q</em>   ⇔   <em>p</em> ⇒ <em>q</em>

<em />

<em>With</em> a table:

<em>p</em>   …   <em>q</em>   …   <em>p</em> ⇒ <em>q</em>   …   (<em>p</em> ⇒ <em>q</em>) ∨ <em>q</em>

T   …   T   …       T       …          T

T   …   F   …       F       …          F

F   …   T   …       T       …          T

F   …   F   …       T       …          T

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