Answer: (A) The product of two numbers with the same sign is positive.
Since the numbers in each pair have the same sign, the product will be positive.
It would take 60 days to add 30 million new accounts
We need to test the hypotheses:
![H_0:p=0.5\\ H_1:p>0.5](https://tex.z-dn.net/?f=%20H_0%3Ap%3D0.5%5C%5C%20H_1%3Ap%3E0.5%20%20)
The
confidence interval for proportion is
.
Here ![p=\frac{670}{1300} =0.5154,n=1300,\alpha =0.05](https://tex.z-dn.net/?f=%20p%3D%5Cfrac%7B670%7D%7B1300%7D%20%3D0.5154%2Cn%3D1300%2C%5Calpha%20%3D0.05%20)
The z value to be used is 1.96.
The 95% CI is
.
Since 0.5 lies in the interval (0.488,0.543), we cannot reject the null hypothesis with 95% confidence.
Answer:
I NEED EM POINTs
Step-by-step explanation:
all are 798
Answer:
440 + 220 = 660
670 + 220 = 890
189 + 756 = 945
Step-by-step explanation: