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almond37 [142]
3 years ago
13

1. Find the chi square value x 2 L corresponding to a sample size of 7 and a confidence level of 99%

Mathematics
1 answer:
sashaice [31]3 years ago
8 0

Answer:

1. χ² = 18.548

2. χ² = 23.685

Step-by-step explanation:

1. Confidence level is 99% (α = 0.01), but we're only interested in the left half, so α/2 = 0.005.  Degrees of freedom are 7−1 = 6.  Looking up in a chi square table, χ² = 18.548.

2. Confidence level is 90% (α = 0.10), but we're only interested in the right half, so α/2 = 0.05.  Degrees of freedom are 15−1 = 14.  Looking up in a chi square table, χ² = 23.685.

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Komok [63]

1.

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5 0
1 year ago
52.5% of what number is 25.83?
xxTIMURxx [149]
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HACTEHA [7]

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3 0
3 years ago
Assume that theta is a positive acute angle.
muminat

Answer:

Step-by-step explanation:sin

(

θ

)

=

40

41

Use the definition of sine to find the known sides of the unit circle right triangle. The quadrant determines the sign on each of the values.

sin

(

θ

)

=

opposite

hypotenuse

Find the adjacent side of the unit circle triangle. Since the hypotenuse and opposite sides are known, use the Pythagorean theorem to find the remaining side.

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=

√

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−

opposite

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Replace the known values in the equation.

Adjacent

=

√

(

41

)

2

−

(

40

)

2

Simplify

√

(

41

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2

−

(

40

)

2

.

Tap for more steps...

Adjacent

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cos

(

θ

)

=

9

41

Find the value of tangent.

Tap for more steps...

tan

(

θ

)

=

40

9

Find the value of cotangent.

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cot

(

θ

)

=

9

40

Find the value of secant.

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sec

(

θ

)

=

41

9

Find the value of cosecant.

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csc

(

θ

)

=

41

40

This is the solution to each trig value.

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θ

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cos

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θ

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tan

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cot

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sec

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csc

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6 0
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