A standard die is rolled 600 times. How many times would you expect to roll a number

2 answers:

5 0

Their are 3 numbers less than 4 on a die with 6 sides so 3 is 50% of 6 so then it should land on a number less than 4 50% of the 600 rolls to get 300

wel3 years ago

4 0

So a die has six sides, three of those sides are less than 4, so you would have a 1/2 chance of getting one of them.

Multiply 1/2 by 600 (which is the same as doing 600/2) to get 300.

Therefore, you would expect to roll a number less than four 300 out of 600 times.

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***PLEASE HELP***

Molodets [167]

Given:
250 sheep in a 40-acre pasture.
Number of sheep grazing in each acre.

250/40 = 6.25 or 6 sheep per acre

n = 6
sample proportion: signified by ρ
Sample 1: 4 → 4/6 = 0.67
Sample 2: 1 → 1/6 = 0.17
Sample 3: 9 → 9/6 = 1.50

multiply the sample proportion by 1-ρ
Sample 1: 0.67(1-0.67) = 0.67(0.33) = 0.2211
Sample 2: 0.17(1-0.17) = 0.17(0.83) = 0.1411
Sample 3: 1.50(1-1.5) = 1.5(-0.5) = -0.75

divide the result by n. n = 6
Sample 1: 0.2211/6 = 0.03685
Sample 2: 0.1411/6 = 0.02352
Sample 3: -0.75/6 = -0.125

square root of the quotient to get the standard error.
Sample 1: √0.03685 = 0.1919
Sample 2: √0.02352 = 0.1534
Sample 3: √-0.125 = invalid

z value 95% confidence 1.96.

Sample 1: 1.96 * 0.1919 = 0.3761 or 37.61% margin of error
Sample 2: 1.96 * 0.1534 = 0.3007 or 30.07% margin of error

8 0

3 years ago

A circle has a radius of 3. An arc in this circle has a central angle of 20°. What is the length of the arc? Either enter an exa

Semenov [28]

Answer:

$\frac{\pi }{3}$