Answer:
it's so easy 2*0.8=1.6 is the answer
You set it up 27 over 15 and its 405
Answer:
9
1600
Step-by-step explanation:
i know
Answer:
Step-by-step explanation:
Given that the difference of sample means of two populations is 108.7, and the standard deviation of the difference in sample means is 32.
H0: difference inmeans =0
Ha: difference inmeans not equal to 0
(Two tailed test)
Test statistic = mean difference/std deviation
![=\frac{108.7}{32}\\=3.40](https://tex.z-dn.net/?f=%3D%5Cfrac%7B108.7%7D%7B32%7D%5C%5C%3D3.40)
For 68% confidence level, }z}<1
Here z =3.40 >1
Hence reject null hypothesis
The difference between the means cannot be 0 and there is statistical evidence at 68% level to reject null hypothesis
N= -18 according to Photomath