This should help you on how to get the zeros and the answer for the bottom question is A
Answer:
![H_1 : \mu > 24.5](https://tex.z-dn.net/?f=H_1%20%3A%20%5Cmu%20%20%3E%2024.5)
Step-by-step explanation:
From the given information:
The sample size is 28
The population mean is 24.5 (ppb)
The sample mean is 225.3 (ppb)
Thus, the null and the alternative hypothesis can be computed as:
Null hypothesis:
![H_o : \mu \le 24.5](https://tex.z-dn.net/?f=H_o%20%3A%20%5Cmu%20%5Cle%2024.5)
Alternative hypothesis:
![H_1 : \mu > 24.5](https://tex.z-dn.net/?f=H_1%20%3A%20%5Cmu%20%20%3E%2024.5)
I am so sorry but I can’t see the question because if the glare on it