3 years ago

In a music group of 45 people, 1/9 are vocalists and the rest play musical instruments. How many play musical instruments

Mathematics

1 answer:

babymother [125]3 years ago

3 0

40 play musical instruments

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joja [24]

Answer:

The answer is "".

Step-by-step explanation:

Please find the complete question in the attached file.

We select a sample size n from the confidence interval with the mean $\mu$ and default $\sigma$ , then the mean take seriously given as the straight line with a z score given by the confidence interval

$\mu=3.87\\\\\sigma=2.01\\\\n=110\\\\$

Using formula:

$z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

The probability that perhaps the mean shells length of the sample is over 4.03 pounds is

$P(X>4.03)=P(z>\frac{4.03-3.87}{\frac{2.01}{\sqrt{110}}})=P(z>0.8349)$

Now, we utilize z to get the likelihood, and we use the Excel function for a more exact distribution

$=\textup{NORM.S.DIST(0.8349,TRUE)}\\\\P(z$

the required probability: $P(z>0.8349)=1-P(z$

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2 years ago

The distance between (9,10 and (9,3)

spayn [35]

Using the distance formula
d= square root of (x2-x1)^2+(y2-y1)^2

(9-9)^2+(10-3)^2
0^2+7^2
0+49
Square root of 49 is 7
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3 years ago

1. A package contains 7 red candies, 4 blue candies, and 3 green candies. Three candies are drawn

erastovalidia [21]

Answer:

the answer i got was 0.214

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3 years ago

Given ABCD - WXYZ, Find the length of the segment AD, If Ab=12 WX=20 and WZ=8

hodyreva [135]

Answer:

Step-by-step explanation:

the length of segment AD would be 8 since segment AD and segment WZ are equal in length!

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2 years ago

(8.4x10^3)-(6.4x10^2)<br> Write anserr in scientific notation

Alex_Xolod [135]

I think the answer is 2x10^1

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3 years ago

Read 2 more answers