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Ber [7]
3 years ago
7

The city school district is considering increasing class size in the elementary schools. However, some members of the school boa

rd are concerned that larger classes may have a negative effect on student learning. In words, what would the null hypothesis say about the effect of class size on student learning?
Mathematics
1 answer:
Snezhnost [94]3 years ago
6 0

Answer:

The null hypothesis would say that class size has no effect on students learning.

Step-by-step explanation:

Null hypothesis is a type of hypothesis that is used in statistics which proposes that there is no difference between a certain characteristic of a population or the data - generating process.

Now, in this question,the school district is considering increasing class size in the elementary schools but we want to check whether larger classes may have a negative effect on students learning.

Thus, the null hypothesis would reject this claim of larger classes having negative effect on students and say that class size has no effect on students learning.

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Please answer number 29 ASAP
Effectus [21]

h = 5b - 2

\frac 1 2 b h= 36

b(5b - 2) = 72

5b^2 - 2b - 72 = 0

(b - 4)(5b + 18) = 0

b = 4 \textrm{ or }b = -18/5

We can rule out the negative length.

h = 72/b = 72/4 = 18

Answer: b=4, h=18


3 0
3 years ago
Read 2 more answers
After robbing a bank in dodge city, a robber gallops off at 14 mi/h. 20 minutes later, the marshall leaves to pursue the robber
Morgarella [4.7K]

For this case we have to write the equation of the position of each one.

We have then:

For the robber:

r = 14t

For the marshall :

r = 16 (t- (\frac{20}{60}))

r = 16 (t-\frac{1}{3})

By the time the marshall reaches the robber we have:

14t = 16 (t-\frac{1}{3})

From here, we clear the time.

We have then:

16t - 14t = \frac{16}{3}

2t = \frac{16}{3}

t =\frac{8}{3}

t = 2.7 h

Answer:

it takes the marshall to catch up to the robber about 2.7 hours.

4 0
3 years ago
What is the slope of
earnstyle [38]

Answer:

3/2 is slope  

m= slope

y=mx+b

Step-by-step explanation:

2y=3/2x+7/2

4 0
3 years ago
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Please help thank you so much!!!!!
mafiozo [28]

Answer:

Csc(60)

sin(330)

-4cot(-45)

Step-by-step explanation:

The cosen típic is not mant for use With this type of problem.

3 0
3 years ago
What is the value of h when the function is converted to vertex form?
zloy xaker [14]
f(x)=ax^2+bx+c\\\\h=\dfrac{-b}{2a};\ k=f(h)

We have:
h(x)=x^2-8x+14\\\\a=1;\ b=-8;\ c=14

Substitute:
h=\dfrac{-(-8)}{2\cdot1}=\dfrac{8}{2}=4

7 0
3 years ago
Read 2 more answers
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