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
<span>35/6+43/6</span><span><span>
35/6</span>+43/6</span><span><span>
35+43/</span>6</span><span>
78/6</span><span>
13 is your answer.
Hoped I helped!</span>
4*(2x+1)=(2x+1)+(2x+1)+(2x+1)+(2x+1)=
2x+2x+2x+2x+1+1+1+1=
=8x+4
I hope this is ok !