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REY [17]
3 years ago
5

A physicist examines 10 water samples for iron concentration. The mean iron concentration for the sample data is 0.711 cc/cubic

meter with a standard deviation of 0.0816. Determine the 90% confidence interval for the population mean iron concentration. Assume the population is approximately normal.
Step 1 of 2: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Step 2 of 2: Construct the 90% confidence interval. Round your answer to three decimal places. Lower endpoint? Upper endpoint?
Mathematics
1 answer:
leonid [27]3 years ago
5 0

Answer:

Poggers

Step-by-step explanation:

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Rzqust [24]

Answer:

43.2 degrees

Step-by-step explanation:

1. First, find the total number of people who were surveyed.

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2. Next, figure out how many the Marine Corps is out of those 500 people.

60/500= 0.12 =12%

3. Last, find out what degree the 12% would take up.

We know that a circle is 360 degrees. To find 12% of 360 degrees, you will do:

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3 years ago
11] You buy a house for $175,000. The economy goes
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Answer:

4% of 175,000 is 7,000

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7 0
2 years ago
Please answer i need help
skad [1K]
1. 72 to 50 points
50/72 = 69%
100-69= 31% decrease

2. 14 to 40 books
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100-35= 65% increase

3. 10 plus 30% increase
10 * 0.3 = 13
8 0
2 years ago
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Which of the following is a description of the data with a correlation coefficient of -0.3?
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The number is near zero, so it is classified as "low." Its sign is negative, so it is a ...
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3 years ago
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The volume of 10,000drops of a liquid is 10 fluid ounces. what is the volume of 100 drops.
KIM [24]

We can write a proportion for this problem

10,000drops of a liquid is 10 fluid ounces

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x=100*10/10000 =1/10 = 0.1 fluid ounces

8 0
3 years ago
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