Population variances o and o, are known. Question: Two kinds of thread are being compared for strength. Fifty pieces of each type of thread are tested under similar conditions. Brand A has an average tensile strength of 78.3 kilograms with a standard deviation of 5.6 kilograms, while brand B has an average tensile strength of 87.2 kilograms with a standard deviation of 6.3 kilograms. Construct a 95% confidence interval for the difference of the population means. Edit View Insert Format Tools Table в I U 12pt v Paragraph v

Q: 21-3 3x-5 16 %3D

A:

Q: 2. Simplify 27x6 64 2/3

A: We will simplify the given question in the following step.

Q: 3 -4- -0- 4. 2.

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Q: 5 -100 12 8

A: Solve the given

Q: Simplify. 10m n² 5mn4

A: To simplify the below expression.

Q: 10 8/10 + 9 7/12=

A:

Q: 8. Solve for x. 3 4 16

A:

Q: 6.4 3

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Q: 1. a 2 b 4

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Q: 196. 2(n+1)

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Q: 1 7. 27 2.

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Q: 4. w/- 4. 2.

A: Given:

Q: Simplify. 54 A_ng 3 6 9v y+15v

A: We have to simplify the expression : 3u5v4 / ( 9v3y6 + 15v5 ).

Q: Solve. 40 8 .2. -16 X-4 x+4

A:

Q: 20 9.

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Q: 9.2 2 15 5 3 16

A:

Q: A 2/15 B 30 V35 5 20

A: Given,  A circle with secant and tangent  We have to find the value of x

Q: 42.1+6.9

A: Given that  42.1+6.9 Then the value of 42.1+6.9

Q: Solve. 1.24 15

A: Given1.243=y15

Q: tions exist, you o = x %3D

A:

Q: 1.r -5 1.Г 2

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Q: d. 1 3a+18 = 1 - 8 a+6

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Q: 4. Find tricingeo. FincX 3.2 2.7

A:

Q: Simplify. 1 -2 - 5 +y -1 -2 + y X

A: Topic- Equation

Q: 6. 5 d² + 4d + 4 d + 2

A: we will use the algebraic formula (a+b)2=a2+2ab+b2

Q: 5. Solve. 3 1 8. * – 25 x+5 X-5

A:

Q: 4. %3D х+2 х-5 :- 3.

A:

Q: %3D 2. 416

A: See the details solution in below

Q: (a +3)2 = 25 %3D

A:

Q: Solve for d,. 1 1

A: We have to solve

Q: 4 1/2 +6 1/5=

A: We have

Q: 2 1/64 + 1 27/32 =

A:

Q: 4. Sdz 「号

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