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3 years ago

14

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

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:

<em> 15</em>
<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