Answer:
The answer is B
Step-by-step explanation:
1. 2.50 x 2 is $5
2. 2.50 x 4 is $10
3. 2.50 x 3 is $7.50
4. 5 + 10 + 7.50 is 22.50 so you know the total should be 22.50.
5. It cant be A because 2.50 x 2 is 5 then timesing that by four would make 20 and then by 3 that would make $60 not $22.50
6. It is B because 2 + 4 + 3 is 9, 9x2.50 is 22.50
We can plug in 15 for P, as it is the perimeter.
s = 15/6
s = 2.5
Hope this helped!
Answer:
Mean: 21.125
Median: 16.5
Mode: 14
Step-by-step explanation:
First sourt your numbers from smallest to biggest - very important!
Mean= (all numbers total/amount of numbers)=169/8=21.125
Median= The middle two numbers added and divided by two = 15+18/(2)=16.5
Mode=number that appears most often: 14 appears twice!
95% confidence interval would be (58.96, 69.04).
Step-by-step explanation:
Since we have given that
Number of dogs' weight = 20
Mean = 64 ounces
Standard deviation = 11.5 ounces
We need to find the 95% confidence interval.
So, z = 1.96
so, interval would be
![\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=64\pm 1.96\times \dfrac{11.5}{\sqrt{20}}\\\\=64\pm 5.04\\\\=(64-5.04,64+5.04)\\\\=(58.96,69.04)](https://tex.z-dn.net/?f=%5Cbar%7Bx%7D%5Cpm%20z%5Cdfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%5C%5C%5C%5C%3D64%5Cpm%201.96%5Ctimes%20%5Cdfrac%7B11.5%7D%7B%5Csqrt%7B20%7D%7D%5C%5C%5C%5C%3D64%5Cpm%205.04%5C%5C%5C%5C%3D%2864-5.04%2C64%2B5.04%29%5C%5C%5C%5C%3D%2858.96%2C69.04%29)
Hence, 95% confidence interval would be (58.96, 69.04).
It’s 3/10 that’s the answer