The given sample's confidence interval is 4.73 ± 0.1199, or from 4.61 to 4.85
<h3>What is the z score?</h3>
The z-score is a numerical assessment of a value's connection to the mean of a set of values, expressed in terms of standards from the mean, that is used in statistics.
Given data;
Mean  = 4.73 
Standard deviation  = 0.865
Sample size  = 200
interval  = 95% 
Confidence interval=?
95% of samples contain the population mean (μ) within the confidence interval of 4.73 ± 0.1199.
Hence, the sample's confidence interval is 4.73 ± 0.1199, from 4.61 to 4.85
To learn more about the Z score, refer to; 
brainly.com/question/15016913
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The first thing we must do for this case is to define variables:
 We have then:
 x: liz's age
 y: melinda's age
 We now write the system of equations: 

 By solving the system graphically we have that the age of each one is currently: 

 Next year, the age of liz is: 
 Answer:
 Answer:
 Next year, Liz's age is 11 years.
 Note: see attached image for the graphic solution.
 
        
        
        
Answer:
a² + b² = c²
13² + 13² = c²
169 + 169 = c²
338 = c²
c = √338 or 18.385 or 13√2
 
        
                    
             
        
        
        
The answer to this question is B, because neither of suggestsions make sense
        
             
        
        
        
Answer:
Can you explain the base and the height of the triangle so I can help you?
Step-by-step explanation: