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klasskru [66]
2 years ago
11

The foot of an extension ladder is 9 feet from a wall. The height that the ladder reaches on the wall and the length are consecu

tive integers. How long is the ladder?
Mathematics
1 answer:
Svetach [21]2 years ago
7 0

Answer:

It depends ln how tall the wall is if you don't have a number for the wall then I cannot answer this I'm sorry

Step-by-step explanation:

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Use a one-sample t ‑test, based on the data below, to test the null hypothesis H0:µ=100.63 against the alternative hypothesis H1
Sati [7]

Answer:

The standard error (SE) is 0.1847.

The t-statistic for this test is 2.490.

Step-by-step explanation:

We are given that the sample has a mean of \bar X = 101.09 and a standard deviation of s = 0.4887 .

Also, the 7 sample values are also given.

<u><em>Let </em></u>\mu<u><em> = population mean.</em></u>

So, Null Hypothesis, H_0 : \mu = 100.63  

Alternate Hypothesis, H_1 : \mu > 100.63  

The test statistics that would be used here <u>One-sample t test statistics</u> as we don't know about population standard deviation;

                         T.S. =  \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean = 101.09

            s = sample standard deviation = 0.4887

            n = sample values = 7

The Standard Error (SE) is given by =  \frac{s}{\sqrt{n} }  =  \frac{0.4887}{\sqrt{7} } = 0.1847

So, <em><u>test statistics</u></em>  =  \frac{101.09-100.63}{\frac{0.4887}{\sqrt{7} } }  ~ t_6

                                =  2.490

The value of t test statistics is 2.490.

7 0
3 years ago
I need help please and thank you
bazaltina [42]

Answer:

15ft

Step-by-step explanation:

4/2=2

10/2=5

3/2=1.5

2x5x1.5=15ft

8 0
2 years ago
48x + 6 factored is 6 (8x + 1)<br> True<br> False
stepladder [879]

Answer:

true

Step-by-step explanation:

5 0
2 years ago
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The equation of the line through point (-4,0) and parallel to the y-axis is
seraphim [82]

Answer:y=-4

Step-by-step explanation:

3 0
3 years ago
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In a hall, there are 75 chairs. Out of these 60% are plastic and 40% are metal. Find the number of chairs of each type ?
poizon [28]

Answer:

plastic = 45

metal = 30

Step-by-step explanation:

4 0
3 years ago
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