Answer
42
step by step
5 times 11 - 2 times 11
The answer is D. To solve 3/5 ÷ 4/7 you would change it to 3/5 × 7/4.
Answer:
Step-by-step explanation:
The answer is C because t = 2 so 75x2=150 and 150 + 10= 160.
Answer:
so its D
Step-by-step explanation:
a is wrong becuase it does have 6
b is wrong becuase you make into 6 triangles
c is wrong becuase it does add up to 180 degrees
Answer: We reject the null hypothesis, and we use Normal distribution for the test.
Step-by-step explanation:
Since we have given that
We claim that
Null hypothesis : ![H_0:\mu\geq 50000](https://tex.z-dn.net/?f=H_0%3A%5Cmu%5Cgeq%2050000)
Alternate hypothesis : ![H_1:\mu](https://tex.z-dn.net/?f=H_1%3A%5Cmu%3C50000)
There is 5% level of significance.
![\bar{X}=46800\\\\\sigma=9800\\\\n=29](https://tex.z-dn.net/?f=%5Cbar%7BX%7D%3D46800%5C%5C%5C%5C%5Csigma%3D9800%5C%5C%5C%5Cn%3D29)
So, the test statistic would be
![z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{46800-50000}{\dfrac{9800}{\sqrt{29}}}\\\\z=-1.75](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7B%5Cbar%7BX%7D-%5Cmu%7D%7B%5Cdfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%7D%5C%5C%5C%5Cz%3D%5Cdfrac%7B46800-50000%7D%7B%5Cdfrac%7B9800%7D%7B%5Csqrt%7B29%7D%7D%7D%5C%5C%5C%5Cz%3D-1.75)
Since alternate hypothesis is left tailed test.
So, p-value = P(z≤-2.31)=0.0401
And the P-value =0.0401 is less than the given level of significance i.e. 5% 0.05.
So, we reject the null hypothesis, and we use Normal distribution for the test.