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Julli [10]
3 years ago
10

Need help friend request if you asian as in korean and so on cause I'm trying sotem new so don't ask

Mathematics
2 answers:
ale4655 [162]3 years ago
5 0
The answer is 14.40 :D
lesantik [10]3 years ago
3 0
It’s is B Because Exploitation
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Four friends attend a school play and pay $6.75 per ticket. Each also buys a Healthy Snack Bag sold by the Theater Club. If the
gogolik [260]

Answer:

$2.5

Step-by-step explanation:

Multiply 4 friends by $6.75 and find the product.

Subtract $27 from $37

Divide 10 by 4

6 0
2 years ago
Read 2 more answers
What is the modulus of −2 + 3?
solong [7]

Answer:

i think its -1⁰

Step-by-step explanation:

............

3 0
3 years ago
In a completely randomized experimental design, three brands of paper towels were tested for their ability to absorb water. Equa
arlik [135]

Answer:

Yes. At this significance level, there is evidence to support the claim that there is a difference in the ability of the brands to absorb water.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>The significance level is 0.05.</em>

<em>The data is:</em>

<em>Brand X: 91, 100, 88, 89</em>

<em>Brand Y: 99, 96, 94, 99</em>

<em>Brand Z: 83, 88, 89, 76</em>

We have to check if there is a significant difference between the absorbency rating of each brand.

Null hypothesis: all means are equal

H_0:\mu_x=\mu_y=\mu_z

Alternative hypothesis: the means are not equal

H_a: \mu_x\neq\mu_y\neq\mu_z

We have to apply a one-way ANOVA

We start by calculating the standard deviation for each brand:

s_x^2=30,\,\,s_y^2=6,\,\,s_z^2=35.33

Then, we calculate the mean standard error (MSE):

MSE=(\sum s_i^2)/a=(30+6+35.33)/3=71.33/3=23.78

Now, we calculate the mean square between (MSB), but we previously have to know the sample means and the mean of the sample means:

M_x=92,\,\,M_y=97,\,\,M_z=84\\\\M=(92+97+84)/3=91

The MSB is then:

s^2=\dfrac{\sum(M_i-M)^2}{N-1}\\\\\\s^2=\dfrac{(92-91)^2+(97-91)^2+(84-91)^2}{3-1}\\\\\\s^2=\dfrac{1+36+49}{2}=\dfrac{86}{2}=43\\\\\\\\MSB=ns^2=4*43=172

Now we calculate the F statistic as:

F=MSB/MSE=172/23.78=7.23

The degrees of freedom of the numerator are:

dfn=a-1=3-1=2

The degrees of freedom of the denominator are:

dfd=N-a=3*4-3=12-3=9

The P-value of F=7.23, dfn=2 and dfd=9 is:

P-value=P(F>7.23)=0.01342

As the P-value (0.013) is smaller than the significance level (0.05), the null hypothesis is rejected.

There is evidence to support the claim that there is a difference in the ability of the brands to absorb water.

3 0
3 years ago
The measure of the angle with "?" is what?
Sergeeva-Olga [200]

Answer:

? =  116°

Step-by-step explanation:

when a line passes through 2 parallel lines,

the angles ?° + 64° are complementary or add up to 180°

? + 64° = 180°

? = 180° - 64° = 116°

4 0
3 years ago
Zivia is given the ordered pair (4, 16) from a table. She decides that the quantities in the table form a proportional relations
kirill115 [55]

Answer:

No

Step-by-step explanation:

You need to have at least 2 points to do that.

if you had the point (4,16) AND (2,7) you could do it

8 0
2 years ago
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