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GuDViN [60]
3 years ago
14

If the average American sleeps 8 hours a night, with a standard deviation of 1 hour, and I plan on gathering a sample of 12 coll

ege students to compare to this population, find the following:
mu =
sigma =
mu_x bar =
sigma_x bar =
Mathematics
1 answer:
Nitella [24]3 years ago
8 0

Answer:

8 hours

1 hour

8 hours

0.288675

Step-by-step explanation:

We complete the answer as follows;

mu = mean = 8 hours

sigma = standard deviation= 1 hour

Mu_x bar = mu = 8 hours

sigma_x bar = sigma/√(n) = 1/√(12) = 0.288675

You might be interested in
5= 3j + 2 <br> can somebody help me?
Free_Kalibri [48]

Answer:

j=1

Step-by-step explanation:

5=3j+2

3j=3

j=1

6 0
3 years ago
In order to make green paint a 2:3 ratio of blue paint and yellow paint is used.If there are 30 ounces of green paint how many o
gladu [14]

Answer:

There are 30 ounce of green paint 18 ounces blue paint was needed.

Step-by-step explanation:

Given that,

In order to make green paint a 2:3 ratio of blue paint and yellow paint is used.

Assume 2x blue paint and 3x yellow paint required to make 30 ounce of green paint.

According to the problem,

2x+3x=30

⇒5x=30

\Rightarrow x=\frac {30}{5}

⇒ x=6

The amount of blue paint is = 2×6

                                              =12 ounces

The amount yellow paint is = (3×6)

                                            = 18 ounces

There are 30 ounce of green paint 18 ounces blue paint was needed.

6 0
2 years ago
Helppppppppppppppp plzzzzzzzzzzzzzz
Pavlova-9 [17]

Answer: 15w

Step-by-step explanation:

6 0
3 years ago
What is the value of y
kari74 [83]

Answer:

y= -6

Step-by-step explanation:

-2y - 5y= -7y

-7y=42

42/-7=

y= -6

5 0
2 years ago
Please tell me how you got it.
yawa3891 [41]

<u>Answer-</u>

-70\%

<u>Solution-</u>

The given data as follows,

-70\%,\ 0.34,\ -\dfrac{2}{5},\ 0.96\%

After converting all the percentages and fractions to decimal, we can compare them all.

For converting percentages to decimal to divide the number by 100, so

-70\%=\dfrac{-70}{100}=-0.70,\\\\0.96\%=\dfrac{0.96}{100} =0.0096

Then converting the fraction into decimal,

-\dfrac{2}{5}=-\dfrac{2\times 20}{5\times 20}=-\dfrac{40}{100}=-0.40

As, all the numbers are converted into decimal, now comparing all the numbers,

-0.70

-70\%

8 0
3 years ago
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