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Stolb23 [73]
3 years ago
14

In formulating hypotheses for a statistical test of significance, the null hypothesis is often

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
4 0
The null hypothesis is often used as a statement <span>about the population the researcher suspects is true and is trying to find evidence for in formulating a statistical test of significance. In addition to that, it is commonly used when stating that there is no significant difference between subjects.</span>
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The figures are similar. Find x.
kipiarov [429]
6/9=x/21
x=21*6/9
=126/9
x=14
6 0
3 years ago
There are 50 apple trees in an orchard. Each tree produces 800 apples. For each additional tree planted in the orchard, the outp
Mariana [72]

Answer:

  1. <em> 15</em>
  2. <em> 42,250</em>

Step-by-step explanation:

The given function is,

P=40000+300x-10x^2

where,

P = the total production of apples,

x = the number of trees added.

As the quadratic function has a negative leading coefficient, so it will open downward and at the vertex the value of function is maximum.

The vertex will be at \left(-\dfrac{b}{2a},-f\left(\dfrac{b}{2a}\right )\right)

The value of the function will be maximum at,

x=-\dfrac{b}{2a}

Putting the values,

x=-\dfrac{300}{2\times (-10)}=\dfrac{300}{2\times 10}=\dfrac{300}{20}=15

So at x=15 or for 15 number of trees the production will be ,maximum.

Putting x=15 in f(x) will yield the maximum production of apples.

P=40000+300(15)-10(15)^2=42,250

4 0
3 years ago
Can anyone please help me with this? ASAP!
vovikov84 [41]
The 90 degrees one is the bottom left.

The reflection across the x is the top left one.

The 270 degree one is bottom right. 
8 0
3 years ago
There were 45 runners to start a race. In the first half of the race, 1/3 of them dropped out. In the second half of the race, 3
Helen [10]
45/3=15 45-15=30 30/5=6 3x6=18 30-18=12 the answer is 12
5 0
3 years ago
The product of three consecutive integers is 210. What is their sum?
Tcecarenko [31]

Answer:

3 consecutive no.s are

5×6×7=210

sum of them is= 5+6+7

=18

So, I hope. it helps !!

6 0
2 years ago
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