Answer:
f=2x^2+6x-20/x
Step-by-step explanation:Divide both sides by x
fx/x=2x^2+6x-20/x
f=2x^2+6x-20/x
Answer:
C. 253.5
Step-by-step explanation:
Answer: 1.9166
Step-by-step explanation:
Let be the population mean.
By considering the given description, we have
n=20
s=7
Since, the population standard deviation is unknown , so we use t-test.
Test statistic :
i.e .
[Rounded to four decimal places.]
Hence, the value of the t-test statistic : 1.9166