Find the critical value tc for the confidence level c=0.98 and sample size n=18

Mathematics

1 answer:

Mariulka [41]3 years ago

6 0

Answer step-by-step explanation:

We know that the critical t value for a 98% confidence level for a sample of size n = 18:

Finding degrees of freedom (n-1) = 17

-search the information in table t for 0.98 and find that t = 2.567

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How many quarts of water must be added to 3 gallons of soup that is 60% chicken broth to make the soup 40% chicken broth

Nuetrik [128]

Answer:

6 quarts

Step-by-step explanation:

60% 3 gallons = 1.8 gallons of broth

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8 0

3 years ago

PLEASE HELP! BRAINLIEST!!!!!!! PLEASE

Gnesinka [82]

Hello!

First you have to find the volume of the cylinder

To find the volume of a cylinder you use the equation

$V = \pi r^{2} h$

V is volume
r is radius
h is height

Put in the values you know and 3.14 for pi

$V = 3.14 * 3^{2} * 7$

Square the number

V = 3.14 * 9 * 7

Multiply

V = 197.82
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Next you find the volume of the sphere

To find the volume of a sphere you use the equation

$V = \frac{4}{3} \pi r^{3}$

V is volume
r is radius

Put in the values you know and 3.14 for pi

$V = \frac{4}{3} * 3.14 * 3^{3}$

Cube the number

$V = \frac{4}{3} * 3.14 * 27$

Multiply

V = 113.04
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Finally you subtract the two volumes from each other

197.82 - 113.04 = 84.78
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The answer is C)84.78

Hope this helps!

7 0

3 years ago

Read 2 more answers

FIRST ONE TO ANSER WILL BE MARKED BRAINLIEST!!

FromTheMoon [43]

Ok so
-10, -6
4,-6
-3,-13
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3 years ago

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