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Margarita [4]
3 years ago
7

The probability of spinning and landing on red is 20%. Meg spins the spinner 25 times and lands on red 10 times, or 40% of the t

ime. She spins the spinner 80 times and lands on red 18 times or 22.5% of the time. What is a good explanation for this?
A) Meg miscounted the first time.

B) The spinner broke the second time and didn't land on red.

C) The less trials you do, the closer experimental probability gets to the theoretical probability.

D) The more trials you do, the closer experimental probability gets to the theoretical probability.
Mathematics
2 answers:
ki77a [65]3 years ago
7 0

Answer:D) The more trials you do, the closer experimental probability gets to the theoretical probability.

Step-by-step explanation:

kow [346]3 years ago
4 0
D is your correct answer, the more trials you do, the closer you get to an accurate probability. Think of it like scientific trials. The less you do, the further you are from creating an accurate law of science, but something that has been tested over and over again is more likely to be accepted as an accurate fact.
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How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 95% confidence that
zimovet [89]

Answer:

61 commuters must be randomly selected to estimate the mean driving time of Chicago commuters.                

Step-by-step explanation:

Given : We want 95% confidence that the sample mean is within 3 minutes of the population mean, and the population standard deviation is known to be 12 minutes.

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At 95% confidence the z-value is z=1.96

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