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konstantin123 [22]
2 years ago
5

An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. Suppose that the

mean income is found to be $23.7 for a random sample of 4825 people. Assume the population standard deviation is known to be $11.2. Construct the 90% confidence interval for the mean per capita income in thousands of dollars. Round your answers to one decimal place.
Mathematics
1 answer:
Arisa [49]2 years ago
5 0
The answer is 50%...
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Answer:

set both of them equal to each other:

8x - 8° = 5x + 25°

subtract 5x by both sides of the equations and it becomes:

3x-8° = 25°

now add 8° both sides:

3x = 33°

divide three by both sides:

x = 11°

now thats done to find B:

plug your x value in the B equation:

5x + 25°

5(11) +25°

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not sure if you can add here sorry :(. I hope this helped so far :)

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If a particular plant root grows 1.5 inches per month. How many centimeters is the plant root growing per month?
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3 years ago
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Alinara [238K]

Answer:

3.

Step-by-step explanation:

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