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zaharov [31]
3 years ago
6

Shawn is conducting an experiment where he is flipping a fair coin (where the probability of the coin landing heads up is 50%).

After performing the experiment 100 times, the coin fell heads up 78 times. Shawn then decided to perform the experiment 15 more times, during which the coin fell heads up only 3 times. According to this experience, should Shawn question whether or not the coin is a fair coin?
A. No, Shawn understands that as the experiment goes through more trials the experimental probability will approach the theoretical probability.

B.Yes, even with the additional 15 trials of the experiment the coin lands on heads 70.4% of the time.

C.No, the first 100 trials shows heads 78% of the time and the next 15 trials shows tails 80% of the time which proves the coin is fair.

D.Yes, since the coin did not land on heads 50% of the time it cannot be a fair coin.
Mathematics
1 answer:
Serhud [2]3 years ago
8 0
I believe the answer is d
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Zarrin [17]

Answer:

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Step-by-step explanation:

Let the sum of money be x

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As adding both parts of ratio gives 5 parts so,

For finding one part = x/5

So according to given condition:

Ali's share(one part) + Ben's share(one part) = 120

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By simplifying:

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6 0
3 years ago
What is m∠HLK? thanks
Katen [24]
The answer is 80°.

If there is a line segment in a triangle which cuts two sides in half or if there is a line segment between two midpoints of a triangle's sides, that line segment must be parallel to the remaining side.

In this case, point L is the midpoint of FH, and point K is the midpoint of HG. So, LK is parallel to FG.

When a line cuts two parallel lines, there are angle pairs which are equal. In the problem above, the line segment FH cuts KL and GF.

The angles KLH and GFH are what we called "Corresponding Angles" and they are equal.

So if HFG is 80°, HLK must be equal to 80°
3 0
3 years ago
A farmer has 20 acres to plant in wheat and barley. He has to plant at least 15 acres. Wheat costs $200 per acre to plant and ba
maria [59]

Answer:

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Step-by-step explanation:

A graph shows cost of planting puts an upper limit on planted area. The lower limit is provided by the requirement to plant at least 15 acres. The vertices of the feasible solution region are ...

  (wheat acres, barley acres) = {(0, 15), (0, 16), (3, 12)}

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To maximize profit, the farmer should plant 16 acres of barley.

4 0
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solniwko [45]

Answer:

Step-by-step explanation:

On the day of the canteen, 800 coupons were sold, the price of each coupon was RM 30 and RM 50 respectively. The amount of money earned from the sale of coupons was RM30000. How many copies of RM30 and RM50 coupons were sold?

Let:

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From (1)

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kvasek [131]

Answer:

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6 0
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