Answer:
z=3.8196
Step-by-step explanation:
-We notice that this is a normal distribution problem.
-Given the mean is $8500, standard deviation is $1200 , and n=350, the critical z-value using alpha=0.05 is calculated as:

Hence, the test statitic is z=3.8196
Answer: la respuesta es 24
Step-by-step explanation:
Answer: I believe its obtuse
Step-by-step explanation:
The answer for x is
x = 1.2