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kondaur [170]
3 years ago
15

Find the distance between U(2,2) and T (-1,4) round answer to the nearest tenth

Mathematics
1 answer:
Sladkaya [172]3 years ago
8 0

Answer:

i feel like i kinda know it but not at the same time lol!!

Step-by-step explanation:

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A book claims that more hockey players are born in January through March than in October through December. The following data sh
astra-53 [7]

Answer:

\chi^2 = \frac{(67-47.5)^2}{47.5}+\frac{(56-47.5)^2}{47.5}+\frac{(30-47.5)^2}{47.5}+\frac{(37-47.5)^2}{47.5}=18.295

Now we can calculate the degrees of freedom for the statistic given by:

df=(categories-1)=4-1=3

And we can calculate the p value given by:

p_v = P(\chi^2_{3} >18.295)=0.00038

Since the p value is very low we have enough evidence to reject the null hypothesis and we can conclude that the players' birthdates are not uniformly distributed throughout the​ year

Step-by-step explanation:

We need to conduct a chi square test in order to check the following hypothesis:

H0: There is no difference of birthdates distributed throughout the​ year

H1: There is a difference between birthdates distributed throughout the​ year

The level of significance assumed for this case is \alpha=0.05

The statistic to check the hypothesis is given by:

\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}

The table given represent the observed values, we just need to calculate the expected values with the following formula E_i = \frac{total}{4}

And replacing we got:

E_{1} =\frac{67+56+30+37}{4}=47.5

And now we can calculate the statistic:

\chi^2 = \frac{(67-47.5)^2}{47.5}+\frac{(56-47.5)^2}{47.5}+\frac{(30-47.5)^2}{47.5}+\frac{(37-47.5)^2}{47.5}=18.295

Now we can calculate the degrees of freedom for the statistic given by:

df=(categories-1)=4-1=3

And we can calculate the p value given by:

p_v = P(\chi^2_{3} >18.295)=0.00038

Since the p value is very low we have enough evidence to reject the null hypothesis and we can conclude that the players' birthdates are not uniformly distributed throughout the​ year

3 0
4 years ago
Find the area of the following composite figure​
just olya [345]

Answer:

1713

Step-by-step explanation:

952+288+472=1713

8 0
3 years ago
A linear function has a slope of 8/3 and passes through the point (0,5). What is the equation of the line?
MArishka [77]

This problem already gave us the slope and y-intercept, so all that's left to do is plug those two values into slope-intercept form.

Slope-Intercept Form: y = mx + b

---m is the slope

---b is the y-intercept

y = 8/3x + 5

Hope this helps!! :)

3 0
3 years ago
Read 2 more answers
Which choice is the most efficient first step to solve this set of equations?
harina [27]
2x + x + y = y + 30 I think.
3 0
3 years ago
Read 2 more answers
What's the pattern rule for 8 12 24 60 168?
lilavasa [31]
He changes are 3 times larger each time.

8 changed by 4 to get to 12.

12 changed by 12 to get to 24.

24 changed by 36 to get to 60.

60 changed by 108 to get to 168.
6 0
4 years ago
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