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3 years ago

I'm so confused on this problem

Mathematics

2 answers:

Paul [167]3 years ago

7 0

Answer:

I think it is probably the 2nd option

Step-by-step explanation:

I'm not entirely sure about the words theoretical and experimental.

I am guessing that experimental means the probability that they got in the table

And I think theoretical means what the mathematical probability should be.

As far as I can tell the theoreticall probability for each part of the pie is 33.33333....

Since each part is equal and there are 100 spins

using these definitions only option 2 makes sense

-Dominant- [34]3 years ago

7 0

Answer:

You highlighted the correct answer in you post

Step-by-step explanation:

If it was a fair spinner the THEORETICAL probability will be the same for al three areas ...should be 33.33 out of 100 ... the <u>experimental</u> probability is what you found by the <u>experiment</u> of spinning 100 times

The dark section EXPERIMENTAL probability is 41 out of 100

The theoretical probability of landing on the medium (.333) is less than the experimental prob of landing on dark ( .41)

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3 years ago

The numerical course grades in a statistics course can be approximated by a normal model with a mean of 70 and a standard deviat

Naily [24]

Answer:

A = 82.82

B = 72.53

C = 61.58

D = 53.55

Step-by-step explanation:

First, determine the percentile at which the cutoff grade in each letter grade interval falls on and find the equivalent z-score:

A: (100-10) = 90-th percentile

z-score = 1.282

B: (100-10-30) = 60-th percentile

z-score = 0.253

C : (100-10-30-40) = 20-th percentile

z-score = -0.842

D: (100-10-30-40-15) = 5-th percentile

z-score = −1.645

The value 'X' for each cutoff can be found by applying the z-score equation:

$z= \frac{X- \mu }{SD}$

Where μ is the mean and SD is the standard deviation

Therefore, the cutoffs are:

$1.282= \frac{X(A)- 70}{10}\\X(A) = 10*1.282 +70\\X(A) = 82.82\\\\0.253 = \frac{X(B)- 70}{10}\\X(B) = 10*0.253 +70\\X(B) = 72.53\\\\0.253 = \frac{X(C)- 70}{10}\\X(C) = 10*-0.842 +70\\X(C) = 61.58\\\\0.253 = \frac{X(D)- 70}{10}\\X(D) = 10*-1.645 +70\\X(D) = 53.55\\$

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3 years ago

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Lilit [14]

Answer:

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(5+7)*6+3=75

Step-by-step explanation:

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3 years ago

I'm so confused on this problem​

I'm so confused on this problem