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Hoochie [10]
2 years ago
15

Determine the number of ways to distribute 10 orange drinks, 1 lemon drink, and 1 lime drink to four thirsty students so that ea

ch student gets at least one drink, and the lemon and lime drinks go to different students.
Mathematics
1 answer:
Thepotemich [5.8K]2 years ago
7 0

Answer:

each student gets 3 drinks, make sure the lemon and lime are in different groupings

Step-by-step explanation:

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A statistics student would like to estimate the average age of students at her college. she would like to be 85% confident that
Anna11 [10]

A statistics student would like to estimate the average age of students at her college. she would like to be 85% confident that her estimate includes the actual college population mean

It means confidence level is 0.85.

After taking survey the estimate of population standard deviation is found as 4.5 years. The given margin of error is 0.5 years

The sample size is obtained using formula

n= (\frac{z_{\alpha/2} std}{ME} )^{2}

Where std = standard deviation

alpha = 1 -c = 1-0.85 = 0.15

z(α/2) = z(0.15/2) = z(0.075)

It is the critical value of z such that area above z and below -z is 0.075

Use z score table to find the probability exactly or very close to 0.075 and note the corresponding z score value.

In z score table there is no accurate 0.075 probability value. The close value is 0.0749 which corresponds to z score -1.44

For calculation we take positive z score value.

So we get z(α/2) =1.44

Using all the given values into formula

n = [(1.44 * 4.5) / 0.5]^2

n = 167.96

Rounding it to nearest integer we get n=168

The number of people need to surveyed is n=168

7 0
2 years ago
In the figure below, tan B = 4/3. If BC = 15 and DA = 3, what is the length of DE ?
jonny [76]

Answer:12

Step-by-step explanation:

3 0
2 years ago
suppose that a cell phone plan charges $15 for the first 60 minutes or less used in a month and $0.50 for each additional minute
cupoosta [38]
F(x)=15 when x<span>≤60
     =.5(x-60)+15  when x>60
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8 0
3 years ago
Write 5/7 as an equivalent fraction with a denominator of 63
notka56 [123]
45/63 is the answer, sorry if wrong

6 0
3 years ago
Read 2 more answers
Solve the equation.
luda_lava [24]

Hope you liked that.

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