Answer:
The highest value of X that is consistent with the belief that the tree died due to natural causes is:
1.5
Step-by-step explanation:
a) Data and Calculations:
Proportion of trees planted last year that died within a month = 1/10 or 10% (1/10 * 100)
Number of new trees planted by a new landscaping firm = 15
Let X = number of trees planted (out of 15) that died
Since it is believed that the earlier trees died out of natural causes,
Therefore, X = 10% of 15
= 1.5