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Maslowich
3 years ago
12

The probability that a student uses the academic resource center on a regular basis is 0.33. in a group of 18 students, what is

the probability that exactly 4 of them use the academic resource center on a regular basis?
Mathematics
1 answer:
pentagon [3]3 years ago
5 0
So here you can make a proportion! .33/18 = x/4 so .33 times 4 = 18x —> (.33 times 4)/18 = x. Plug into calculator to get x
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3/7 to 6/7. what is the percent of change
stepan [7]
Percent change = (new - old)/old * 100
(6/7 - 3/7)/(3/7) * 100
3/7 * 7/3 * 100
1 * 100
100%
4 0
3 years ago
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Which shows how to best estimate the product of 4.73 x 8.92?
Anettt [7]

Answer:

5 x 9 = 45

Step-by-step explanation:

A good way to estimate this would be rounding to the nearest whole number.

First we'll look at 4.73. If we're rounding to the nearest whole number, then that means we'll look at the digit one place to the right of 4. The digit to the right of 4 is 7. 7 is greater than 5 so we round up. We get 5. If we do the same for the other number we see that it also gets rounded up to 9. So our new equation is: 5 x 9. That is a simple multiplication equation and when we multiply we get 45.

Hope this helped!

6 0
3 years ago
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Harper completed making 6% of the masks she needed for school. Type a decimal value that is equivalent to 6%.
Maksim231197 [3]

Answer:

0.06

Step-by-step explanation:

60/100ths is equal to 6%

6 0
3 years ago
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What is 1/2 of 25 explain
Arisa [49]
(1/2)*25 = 25/2 = 12.5 
So the 1/2 of 25 is 25/2 or 12.5
5 0
3 years ago
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A meteorologist is studying the speed at which thunderstorms travel. A sample of 10 storms are observed. The mean of the sample
dezoksy [38]

Answer:

The 95% confidence interval for the true mean speed of thunderstorms is [10.712, 13.688].

Step-by-step explanation:

Given information:

Sample size = 10

Sample mean = 12.2 mph

Standard deviation = 2.4

Confidence interval = 95%

At confidence interval 95% then z-score is 1.96.

The 95% confidence interval for the true mean speed of thunderstorms is

CI=\overline{x}\pm z*\frac{s}{\sqrt{n}}

Where, \overline{x} is sample mean, z* is z score at 95% confidence interval, s is standard deviation of sample and n is sample size.

CI=12.2\pm 1.96\frac{2.4}{\sqrt{10}}

CI=12.2\pm 1.487535

CI=12.2\pm 1.488

CI=[12.2-1.488, 12.2+1.488]

CI=[10.712, 13.688]

Therefore the 95% confidence interval for the true mean speed of thunderstorms is [10.712, 13.688].

4 0
3 years ago
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