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Svetllana
1 month ago
5

The Museum of Science in Boston has an exhibit in which metal balls drop down a chute, bounce around, and wind up in one of 21 b

ins. After 1000 balls have dropped, the heights within the bins clearly follow a bell-shaped curve. The standard deviation is 3 bins.
About how many balls are in bins 1 through 17?

Mathematics
1 answer:
Zina [11.6K]1 month ago
8 0
Refer to the diagram displayed below.

Assuming that nearly all data is under the curve of the probability distribution within three standard deviations of the mean, the actual percentage is 99.7%.
Consequently,
bin #1 corresponds to μ-3σ,
bin #11 aligns with μ,
and bin #21 relates to μ + 3σ.

Let x represent the random variable for bin 17.
Using interpolation,
\frac{x-\mu}{(\mu + 3\sigma )-\mu} = \frac{17-11}{21-11} \\\\ x-\mu = 1.8\sigma

The z-score for x can be calculated as
z= \frac{x-\mu}{\sigma} = \frac{1.8\sigma}{\sigma} =1.8

According to standard tables, the probability for bin #17 is
P(z≤1.8) = 0.964
Thus, if there are 1000 balls, the total in bins 1 through 17 is
0.964 * 1000 = 96.4 ≠ 96 balls.

Answer: 96 balls

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The end behavior of a function refers to how the graph behaves (upwards or downwards) as it nears positive or negative infinity within its domain. Essentially, we’re investigating the direction the graph tends towards on both sides.

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The original price stands at $450.

Step-by-step explanation:

Step 1:

Given information, Discount%, D% = 30 and Selling Price, SP = $315

Step 2:

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Step 3:

Plug in the known values into the formula

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Answer:

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A diagram has been provided.

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CB does not align with line n since points C and B do not lie on that line.

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