The life in hours of a 75-watt light bulb is known to be normally distributed with o = 25 hours. A random sample of 24 bulbs has a mean life ofx = 1014 hours. (a) Construct a 95% two-sided confidence interval on the mean life. Round your answers to the nearest integer (e.g. 9876). i e Textbook and Media

Q: 2 3 (25-x2) 2

A: Given:The integral is,

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A:

Q: (4) y=x +4 -5 -4 -3 6.

A: The given equation is: y=x+4

Q: 1/3+2/9

A: Given 1/3 + 2/9

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A:

Q: 4n – 1

A:

Q: Find m2C and mZD. B. (3c - 17) (c+ 1) A

A:

Q: 7/2 + 3 4/6

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Q: 5 1 1 + 2r dr

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Q: - (2x – 1)(4x² + 2x + 1)

A:

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A: The expression is given as 1+–3m+–9m+4+5+–10m. Simplifying the given expression. 1+–3m+–9m+4+5+–10m…

Q: 18) 2x y

A:

Q: b) S 9+x

A: ∫x39+x8dx

Q: 9.2 2 15 5 3 16

A:

Q: 4(5+6)=

A: Given: 4(5+6)=

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A: Solve the given expression  given expression is 2(3+d-1)

Q: 5)235

A: Answer : 47

Q: 7 Find mLGBF. (4x-4)* (6x + 4)*

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Q: -2(5a)

A: To evaluate-2(5a)

Q: Expand (a −b)4

A:

Q: 9. (x² – 2)3

A:

Q: (n + 4)3 =

A: Given query is to expand (n+4)3

Q: スメ3X5

A: 2×3×5  Means multiply numbers =2×3×5=30

Q: 1 + 2n < n° for all integers n² 2

A:

Q: 9 tmes 8

A: 9 times 8 means adding 8 upto 9 times or multiply 8 by 9.

Q: 11 –/7

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Q: ydy (1+ у)*

A: We have to find the integral.

Q: (9, -7) (3, 1). Find 吕 ロ师仁 ?

A:

Q: ) 2x+4 16

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Q: いーx)dx

A:

Q: 3 5.) (x+ 7x-44) ÷ (x+ 9)

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Q: 2. (1 + 3/2x − 1)² = 3 + √3/2x − 1

A:

Q: 4 -3 4m n 16) 22 4m n

A:

Q: 8 15 2 15

A: 8/15 -2/15 here simple substraction given and fraction is given  calculation is given inbelow

Q: 6(-3w+1/3)

A: