Answer:
ok
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Test statistic = 1.3471
P-value = 0.1993
Accept the null hypothesis.
Step-by-step explanation:
We are given the following in the question:  
Population mean, μ = 4
Sample mean,  = 4.8
 = 4.8
Sample size, n = 15
Alpha, α = 0.05 
Sample standard deviation, s = 2.3
First, we design the null and the alternate hypothesis
 
 
We use two-tailed t test to perform this hypothesis.
Formula:
 
 
Putting all the values, we have 

 Now, we calculate the p-value.
P-value = 0.1993
Since the p-value is greater than the significance level, we fail to reject the null hypothesis and accept it.
 
        
             
        
        
        
The series of numbers is adding 5 and then subtracting 2
20+5=25
25-2=23
23+5=28
28-2=26 
and so on. Do you understand?
 
        
             
        
        
        
Answer:
the price is approximately $12.75 
Step-by-step explanation:
 
        
             
        
        
        
3 - 4z - 4 = 3z - 2 - z
-4z - 1 = 2z - 2
2z + 4z = -1 + 2
6z = 1
z = 1/6
Hope this helps!