1) A manufacturer claims that the average battery life of their product is 20 hours. A random sample of 25 batteries has an average life of 18 hours with a standard deviation of 3 hours. Is there evidence to suggest that the batteries' average life is significantly different from the claimed value at a 10% significance level?

Q: ecimal:

A: From triangle BDC , BD=18mm,∠DAB=45°,∠DCB=αBA=dAC=b

Q: Can I get some help with this please?

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Q: W 4. A cell phone company claims that the average time a person spends on their phone is 12.8 hours…

A: Let μ denote the population mean and x⎯⎯ denotes the sample mean. Then, μ=12.8 and x⎯⎯=12.2 Let n be…

Q: Integrate:

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Q: What Is the equation of the graph? Oy= - x O y= 4 x OY=4x

A: Clearly the line is passing through the origin.

Q: Please help me

A: We will find the missing length.

Q: Thank you so much

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Q: THank you for the assistance, can you please give me step by step explanation and workings

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Q: can you help me please?

A: We have to find the side

Q: Sample Count Sample Proportion Color Red 9. Brown Yellow 6. Green 10 Orange 12 Blue 9. Total 54…

A: Sample proportion for each color can be calculated as follows:

Q: M 10- B 12 A 13 R perimeter = 28 Y

A: Since you have asked multiple question, we will solve the first 3 question for you as per our guide…

Q: Thank you

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Q: Calculate the limit algebraically: x³ + 8 lim x→-2 x² + 7x + 10

A: Consider the given expression, If we substitute  in the expression we get  form. so, use L-hospital…

Q: Can you please help

A: This question is about application of complimentary angles

Q: Thank you.

A: We have to find

Q: Please answer.

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