Explanation:
shortage is when a particular thing is present for use but not up to what the person needs.
scarcity is when a thing or object ceased to be used or non availability of a particular thing for a particular period of time. 
 
        
             
        
        
        
A lot more than 100k I believe
        
             
        
        
        
Answer:
See the attached picture for detailed answer. 
Explanation:
See the attached picture for explanation. 
 
        
             
        
        
        
Answer:
c. 50
Explanation:
Fixed-order-interval inventory model also known as fixed reorder cycle inventory model is used to manage supply of raw material to a business based on demand of the product. Review of inventory is done by inventory analyst at fixed intervals and of inventory level is above a predetermined reorder level, nothing is done. 
If however stock is at or below set reorder level raw material is purchased and is based on the formula- Maximum level - Current level.
In the scenario above we use the following formula
Standard deviation of demand over the review and lead-time period(SD)=Square root of { (Lead time+ Number of days between review)* (Standard deviation of daily demand)^2}
SD= √ {(10+15)*(10)^2}
SD= √ (25* 100)
SD= √2,500
SD= 50