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Ipatiy [6.2K]
3 years ago
6

consider the four corners of the front wall of a rectangular class room (upper right, upper left, lower left, upper left) which

of these points are coplanar with the plane of the front wall.
Mathematics
1 answer:
professor190 [17]3 years ago
3 0
(You copied 'upper left' twice, and you left out 'lower right'. 
But we know what you mean.)

If those are the corners of the wall, then they're ALL in the plane of
the wall (coplanar with it).
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In order to determine the average price of hotel rooms in Atlanta, a sample of 64 hotels was selected. It was determined that th
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Answer:

The decision rule is  

Fail to reject the null hypothesis

The conclusion is  

There is no sufficient evidence to show that the average room price is significantly different from $108.50

Step-by-step explanation:

From the question we are told that

   The sample size is  n = 64

    The average price is  \= x  = \$ 112

    The population standard deviation is  \sigma  = \$ 16

     The level of significance is  \alpha  = 0.05

    The population mean is  \mu = \$ 108.5

The null hypothesis is  H_o :  \mu = 108.50

The alternative hypothesis is  H_a  :  \mu \ne  108.50

Generally the test statistics is mathematically represented as

       z = \frac{\= x - \mu }{ \frac{ \sigma}{\sqrt{n} } }

=>    z = \frac{112 - 108.50 }{ \frac{ 16}{\sqrt{64} } }  

=>    z = 1.75

From the z table  the area under the normal curve to the left corresponding to  1.75  is  

       P( Z >  1.75) = 0.040059

Generally  p-value is mathematically represented as

        p-value = 2 * P( Z >  1.75)

=>     p-value = 2 * 0.040059

=>     p-value = 0.08012

From the values obtained we see that  p-value  > \alpha hence

The decision rule is  

Fail to reject the null hypothesis

The conclusion is  

There is no sufficient evidence to show that the average room price is significantly different from $108.50

 

3 0
3 years ago
To solve for 51 x 4, Tamara used mental math by thinking about 51 + 51 + 51 + 51. Which best describes the strategy she used to
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Its faster in adding isn't always right when you are multiplying numbers
5 0
3 years ago
Pls help dont understand any of this
defon

Answer:

Questions 3

X+100+130=360

X+230=360

X=360-230

X=130

Step-by-step explanation:

a+b+c=180

50+50+50=180

150=180

a+b+c=180-150

=30

6 0
3 years ago
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