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Alona [7]
2 years ago
10

I really need help, this is probability and statistics, if anyone else is taking this class, please help, it is a unit test stud

y guide.

Mathematics
2 answers:
VMariaS [17]2 years ago
7 0

I can't see the picture good

Vikki [24]2 years ago
3 0

Answer:

id like to help but the picture is really blurry so im afraid that i cant. but i know there are others who can!

Step-by-step explanation:

i hope this helps you!

You might be interested in
12. What is the diameter of a circle when the circumference is 75.4 inches?
elixir [45]

Answer:

b

Step-by-step explanation:

24*pi=75.4

circumference is found when diameter is multiplied by pi

8 0
3 years ago
if the student council has 36 members and the ratio of girls to boys is 4:5, then the number of boys on the student council is?
kap26 [50]
There are 16 girls and 20 boys.

4 + 5 = 9

36/4 = 9

4 x 4 = 16

4 x 5 = 20
7 0
3 years ago
How do I do #38? And do I have 35,36,37 correct? Because I rounded to the nearest 10th.
maria [59]

Since perimeter means all around it just means adding all the sides. Because you are given length and width your equation would then be, " (5)+(5)+(2x=14)+(2x+14). Now since area means length times width you would multiply length times width. Since x=7 you would multiply 7x5 and the area equals 35. Questions 35-37 are indeed correct. You're smart ! By the way I'm twelve so hopefully you found this helpful.

6 0
3 years ago
Suppose heights of seasonal pine saplings are normally distributed and have a known population standard deviation of 17 millimet
Mumz [18]

Answer:

296.693\leq x\leq 319.307

Step-by-step explanation:

The confidence interval for the population mean x can be calculated as:

x'-z_{\alpha /2}\frac{s}{\sqrt{n} } \leq x\leq x'+z_{\alpha /2}\frac{s}{\sqrt{n} }

Where x' is the sample mean, s is the population standard deviation, n is the sample size and z_{\alpha /2} is the z-score that let a proportion of \alpha /2 on the right tail.

\alpha is calculated as: 100%-99%=1%

So, z_{\alpha/2}=z_{0.005}=2.576

Finally, replacing the values of x' by 308, s by 17, n by 15 and z_{\alpha /2} by 2.576, we get that the confidence interval is:

308-2.576\frac{17}{\sqrt{15} } \leq x\leq 308+2.576\frac{17}{\sqrt{15} }\\308-11.307 \leq x\leq 308+11.307\\296.693\leq x\leq 319.307

6 0
3 years ago
Ricky walked a total of 4 3/4
Helga [31]

Answer:

19

Step-by-step explanation:

Is he stop every 1/4 mile you get 19

There are 4 1/4 miles in every mile. 4x4(Equation of total 1/4th's in 4 miles) is 16. Add 3 more 1/4th's to get 19

Hope this helps!

7 0
3 years ago
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