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Aleonysh [2.5K]
3 years ago
14

50 POINTS AND BRAINLIEST IF CAN SOLVE WITH CORRECT ANSWER AND PROVIDE STEPS

Mathematics
1 answer:
stellarik [79]3 years ago
5 0
The answer is C. 


Hope this helps
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Find the area for a triangle that has a base of 24 inches and a height of 4 inches.
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Answer:

48in²

Step-by-step explanation:

to find the area of a triangle you first divide the base by 2 then multiply it by the height

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Which graph below has a “period” of 4?
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c

Step-by-step explanation:

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An article describes a study comparing two methods of measuring mean arterial blood pressure. The auscultatory method is based o
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Answer:

p_v =P(t_{(5)}>0.499) =0.319

The p value is higher than any significance level given for example \alpha=0.05,0.1, so then we can conclude that we FAIL to reject the null hypothesis. So we don't have enough evidence to conclude that the mean reading is greater for the auscultatory method at 5% or 10% of significance.

Step-by-step explanation:

A paired t-test is used to compare two population means where you have two samples in  which observations in one sample can be paired with observations in the other sample. For example  if we have Before-and-after observations we can use it.  

Let put some notation  

x=Auscultatory method , y = Oscillatory method

x: 74 86 84 79 70 78 79 70

y: 70 85 90 110 71 80 69 74

The system of hypothesis for this case are:

Null hypothesis: \mu_x- \mu_y \leq 0

Alternative hypothesis: \mu_x -\mu_y >0

The first step is define the difference d_i=x_i-y_i, that is given so we have:

d: 6.6, 4.2, -5.5, -3.1, 9.3, -3.9

The second step is calculate the mean difference  

\bar d= \frac{\sum_{i=1}^n d_i}{n}=1.267

The third step would be calculate the standard deviation for the differences, and we got:

s_d =\sqrt{\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1}} =6.215

The fourth step is calculate the statistic given by :

t=\frac{\bar d -0}{\frac{s_d}{\sqrt{n}}}=\frac{1.267 -0}{\frac{6.215}{\sqrt{6}}}=0.499

The next step is calculate the degrees of freedom given by:

df=n-1=6-1=5

Now we can calculate the p value, since we have a right tailed test the p value is given by:

p_v =P(t_{(5)}>0.499) =0.319

The p value is higher than any significance level given for example \alpha=0.05,0.1, so then we can conclude that we FAIL to reject the null hypothesis. So we don't have enough evidence to conclude that the mean reading is greater for the auscultatory method at 5% or 10% of significance.

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2 years ago
A) What are the coordinates of the image of vertex G after a reflection across the line y = x?
Oksanka [162]

Answer:

b. (-5, 4)

Step-by-step explanation:

edge2020

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12 out of 142 people standing in line for tickets were going to see the movie in theater A. If there were a total of 1704 ticket
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I believe the answer is 144 
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