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Mashutka [201]
3 years ago
15

Statistics would not be useful if they were not presented with 100% certainty. T/F

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
7 0

Answer: False

Nothing is 100% certain no matter how sure it seems. This is especially true with statistics. There's always going to be some amount of error. The goal is to minimize the error as much as possible in the best cost-effective manner.

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Which of the following creates 90° angles at the points of intersection and also cuts a segment into two congruent pieces?
IgorC [24]
Perpendicular bisector
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3 years ago
Which fraction is bigger 7/8 or 13/15
ivolga24 [154]

Answer:

7/8

Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.5 parts
DochEvi [55]

Answer:

We accept  H₀   with the information we have, we can say level of ozone is under the major limit

Step-by-step explanation:

Normal Distribution

population mean  =   μ₀   =  7.5   ppm

Sample size     n   =  16      df  =  n  -  1  df  =  15

Sample mean      =    μ   =  7.8  ppm

Sample standard deviation   =  s  =  0.8

We want to find out if ozono level, is above normal level that is bigger than 7.5

1.- Hypothesis Test

null hypothesis                          H₀         μ₀   =  7.5

alternative hypothesis             Hₐ          μ₀  >  7.5  

2.-Significance level    α  =  0.01   we will develop one tail-test (right)

then   for   df  =  15    and    α =  0,01   from t -student table we get

t(c)  = 2.624

3.-Compute  t(s)

t(s)  =  (  μ -  μ₀ ) / s /√n            ⇒   t(s)  = ( 7.8  -  7.5 )*4/0.8

t(s)  = 0.3*4/0.8

t(s)  = 1.5

4.-Compare   t(s)   and  t(c)

t(s)  <  t(c)       1.5  <  2.64

Then  t(s) is inside the acceptance region. We accept  H₀

7 0
3 years ago
Can someone please help me
Gre4nikov [31]

Answer:the equation is 72-b=p so if 50 bring theirs 22 will be provided for or if 60 12 will be provided for

Step-by-step explanation:so this is the simple equation they wanted

4 0
3 years ago
I’m confused on this one
Fudgin [204]
BD is equal to 120 because when you find the hypotenuse of triangle GEB, you just have to multiply it by 1.5.
3 0
3 years ago
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