Answer: (A) H0: μ = 140 mg vs. H1: μ ≠ 140 mg
 
Step-by-step explanation:
Usually null hypothesis represents the claim that the values associated to the groups being tested have no statistical difference but alternative hypothesis supports the claim that there is statistical difference.
Let  be the population mean .
 be the population mean .
We are given that the mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle.
i.e. Null hypothesis :
Alternative hypothesis for two tail hypothesis has sign (≠).
i.e. Alternative hypothesis : 
∴ The hypotheses for a two-tailed test of the claimed potassium content: 
H0: μ = 140 mg vs. H1: μ ≠ 140 mg
 
        
             
        
        
        
Answer:
Cool
Step-by-step explanation:
 
        
                    
             
        
        
        
||a|| is called the norm of a. The answer is square root of 58. Hope it helps
 
        
        
        
Exact form : 3.9*10^5
decimal form : 390000