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Mkey [24]
3 years ago
15

The mean family income for a random sample of 550 suburban households in Nettlesville shows that a 92 percent confidence interva

l is ($45,700, $59,150). Braxton is conducting a test of the null hypothesis H0: µ = 44,000 against the alternative hypothesis Ha: µ ≠ 44,000 at the α = 0.08 level of significance. Does Braxton have enough information to conduct a test of the null hypothesis against the alternative?
multiple-choice options:
H0: µ > 17 miles per gallon, Ha: µ ≥ 17 miles per gallon

H0: µ ≤ 17 miles per gallon, Ha: µ < 17 miles per gallon

H0: µ = 17 miles per gallon, Ha: µ > 17 miles per gallon

H0: µ = 17 miles per gallon, Ha: µ < 17 miles per gallon

H0: µ = 17 miles per gallon, Ha: µ ≠ 17 miles per gallon
Mathematics
1 answer:
denis23 [38]3 years ago
5 0
Okay so the answer is the fist multiple choice
I hope this helps tou
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Help! I'm a little stumped when it comes to variables in matrices. An explanation would be super rad!
iris [78.8K]

Answer:

30

Step-by-step explanation:

To find the determinant of a 3x3 matrix, you can use this method. (See picture.)

Start with the first number in the top row, and block off the row and column.  A 2x2 matrix will be left.  Find the determinant of this 2x2 matrix, and multiply it by the number in the top row.

Repeat for the other two numbers in the top row.  Add the first result, subtract the second, and add the third.

det A = -2 [(3)(-5) − (a)(0)] − 2 [(0)(-5) − (a)(0)] + b [(0)(0) − (3)(0)]

det A = -2 (3)(-5) − 0 + 0

det A = 30

8 0
2 years ago
How many three-digit positive integers <img src="https://tex.z-dn.net/?f=x" id="TexFormula1" title="x" alt="x" align="absmiddle"
Anastaziya [24]

Answer:

  40

Step-by-step explanation:

Any solution x will mod 23 will also have x+23n as a solution, for some integer n. Since 900/23 = 39 3/23, we know there are 39 or 40 three-digit integers of this form.

As it happens, 100 is the smallest 3-digit solution. So, there are 40 three-digit numbers that are of the form 100 +23n, hence 40 solutions to the equation.

_____

The equation reduces, mod 23, to ...

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2 years ago
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professor190 [17]
The answer is about 13.9927.

You would divide 52/11 and then subtract that decimal by 18.65.

18.65-4.7272=13.9927.
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3 years ago
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WINSTONCH [101]
12/6 is 2

2 +2 is 4

The overall answer is 4
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It would be $265.55
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