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gulaghasi [49]
3 years ago
9

A study was conducted to determine if a certain treatment has any effect on the amount of metal removed in a pickling operation.

A random sample of 100 pieces was immersed in a bath for 24 hours without the treatment, yielding an average of 12.2 millimeters of metal removed and a sample standard deviation of 1.1 millimeters. A second sample of 200 pieces was exposed to the treatment, followed by the 24-hour immersion in the bath, resulting in an average removal of 9.1 millimeters of metal with a sample standard deviation of 0.9 millimeter. Compute a 98% confidence interval estimate for the difference between the population means. Does the treatment appear to reduce the mean amount of metal removed?
Mathematics
1 answer:
Stels [109]3 years ago
7 0
Yes it is doesn't even have removers there is a good boy and I have a ride home and then she says yes she does what I have no no
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Answer:

24:26 or 12:13

Step-by-step explanation:

Ratios can be better understood if you read 24:26 as: Emily read 24 fiction books for every 26 books.

The question tells us Emily read 24 fiction books and 2 nonfiction books. We know she read 24 fiction books so that is the first part of our ratio. Now, they want to know how many total books did she read. Well, she read 24 fiction and 2 nonfiction. 24+2 = 26. 26 books total! So now we have the second part of our ratio and end up with the ratio of 24:26. But now, we have to simplify it. Simplifying ratios is like simplyfing fractions. You have to find their greatest common factor. The greatest common factor of 24 and 26 is 2. Now you divide both number by their greatest common factor (2). Finally, we end up with the ratio of 12:13.

Greatest common factor help: https://www.mathsisfun.com/greatest-common-factor.html

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3 years ago
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IceJOKER [234]

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alright all you need to do is Use the slope-intercept form to find the slope and y-intercept

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Step-by-step explanation:

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I am joyous to assist you anytime.

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3 years ago
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Salsk061 [2.6K]

Answer:

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Step-by-step explanation:

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t^3 * t^5 = t^8

2x t^3 * 16x^2 t^5 = 32x^3 t^8

3 0
3 years ago
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