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kolbaska11 [484]
3 years ago
13

Suppose that we've decided to test Clara, who works at the Psychic Center, to see if she really has psychic abilities. While tal

king to her on the phone, we'll thoroughly shuffle a standard deck of cards (which is made up of hearts, spades, diamonds, and clubs) and draw one card at random. We'll ask Clara to name the suit (heart, spade, diamond, or club) of the card we drew. After getting her guess, we'll return the card to the deck, thoroughly shuffle the deck, draw another card, and get her guess for the suit of this second card. We'll repeat this process until we've drawn a total of cards and gotten her suit guesses for each. Assume that Clara is not clairvoyant, that is, assume that she randomly guesses on each card. a.Estimate the number of cards in the sample for which Clara correctly guesses the suit by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable). b.Quantify the uncertainty of your estimate by giving the standard deviation of the distribution.
Mathematics
1 answer:
dsp733 years ago
5 0

Answer:

Step-by-step explanation:

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14. Two parallel lines l and m are intersected by a transversal t. If the interior angles on same side of transversal are (2x−8)
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Answer:

70° and 110°

Step-by-step explanation:

It is given that, two parallel lines l and m are intersected by a transversal t.

The interior angles on same side of transversal are (2x−8)° and (3x−7)°.

We need to find the measure of these angles.

We know that, the sum of interior angles of the same side of the  transversal is equal to 180°. So,

(2x−8)° + (3x−7)° = 180°

⇒ 5x-15=180°

⇒5x=180°+15

⇒5x=195

⇒x=39

Put x = 39 in (2x−8)°,

(2x−8)° = (2(39)-8)°

=70°

Again put x = 39 in (3x−7)°,

(3x−7)° = (3(39)-7)°

=110°

So, the measure of these angles are 70° and 110°.

8 0
3 years ago
4+8÷2-2×3 what would we do first a 4+8 b8÷2 c2-2 d2×3​
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multiplication, so d, 2 x 3

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Answer:

51..................................................................................

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40% off means you are paying 60% of the original price ( 100% - 40% = 60%


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