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DENIUS [597]
3 years ago
13

The table shows the cost of renting a sound system for a concert. Isabel rents a sound system at 1 p.m. and plans to return it b

efore 4 p.m. Complete: Isabel will pay $ if she returns the sound system by 4 p.m. If she is 30 minutes late, she will pay an additiona

Mathematics
1 answer:
leonid [27]3 years ago
3 0

Answer:

56

Step-by-step explanation:

its 56 b

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If y=3x - 5, find the value of y when x = -1yn
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Answer:

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6 0
2 years ago
Type the correct answer in the box. x y 3 10 20 In the table, the relation (x, y) is not a function if the missing value of x is
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The relation is <em>not a function</em> if any x-value is repeated.

Assuming you have

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3 years ago
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The thicknesses of 81 randomly selected aluminum sheets were found to have a variance of 3.23. Construct the 98% confidence inte
Yuliya22 [10]

Answer:

The confidence interval for the population variance of the thicknesses of all aluminum sheets in this factory is Lower limit = 2.30, Upper limit = 4.83.

Step-by-step explanation:

The confidence interval for population variance is given as below:

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We are given

Confidence level = 98%

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Sample Variance = S^2 = 3.23

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(By using chi-square table)

[(n – 1)*S^2 / X^2 α/2, n– 1 ] < σ^2 < [(n – 1)*S^2 / X^2 1 -α/2, n– 1 ]

[(81 – 1)* 3.23 / 112.3288] < σ^2 < [(81 – 1)* 3.23/ 53.5401]

2.3004 < σ^2 < 4.8263

Lower limit = 2.30

Upper limit = 4.83.

8 0
2 years ago
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The answer is B.

I  hope this helps. :)
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3 years ago
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