The mean age of principals in a local school district is 55.8 years. If a hypothesis test is performed, how should a decision that rejects the null hypothesis be interpreted? A. There is sufficient evidence to support the claim μ= 55.8
B. There is not sufficient evidence to reject the claim μ = 55.8
C. There is sufficient evidence to reject the claim μ = 55.8
D. There is not sufficient evidence to support the claim μ = 55.8

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation: