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Y_Kistochka [10]
3 years ago
11

Testing: H 0 : μ ≥ 15.6 H 1 : μ < 15.6 Your sample consists of 46 values, with a sample mean of 13.4. Suppose the population

standard deviation is known to be 4.47. a) Calculate the value of the test statistic, rounded to 2 decimal places. z =
Mathematics
1 answer:
guajiro [1.7K]3 years ago
5 0

Answer:

The value of the test statistic is <em>z</em> = 3.34.

Step-by-step explanation:

The information provided is:

\bar x=13.4\\\sigma = 4.47\\n=46

The test statistic is:

Z=\frac{\mu-\bar x}{\sigma/\sqrt{n}}

  =\frac{15.6-13.4}{4.47/\sqrt{46}}\\\\=3.33806\\\\\approx 3.34

Thus, the value of the test statistic is <em>z</em> = 3.34.

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solong [7]

Answer:

We can use slope intercept form to get the points needed. Y= -7+1/3x The points are (0,-7) and (3,-6)

Step-by-step explanation:

Subtract 2x from the left side and place it over to the right side with the 42. Now we have -6y= 42-2x. From here we divide by -6 and we get y= -7+1/3x. We know that are slope is 1/3 which the one is the rise and the 3 is the run. We also know that our y intercept is -7. We plot the points at (0,-7) and (3,-6)

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3 years ago
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emmasim [6.3K]
9 is y is the answer
5 0
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n200080 [17]

Answer:

k=\dfrac{m}{5}

Step-by-step explanation:

Let Kat reads k pages of the book.

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From equation (1),

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Hence, the equation that can be used to find how many pages Kat read is equal to \dfrac{m}{5}.

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3 years ago
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Answer:

She spent 40 more dollars or to be exact 40.70 dollars more then aiden

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Explain please and tell me how to do it ?
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The trick to calculating the area here is to subdivide the diagram into smaller parts. For example, there's a 3 cm-by-3cm square. The rectangle is 4 cm by 8 cm.. The triangle has a base of 5 cm and a height of 3 cm.

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3 years ago
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