Answer:
The 95% confidence interval is ( 27.126 , 34.674)
Step-by-step explanation:
Given
The t critical value at 0.05 level = 2.023 for the df = 39
Confidence interval = 95%
Mean

Substituting the given values we get -

Hence, the 95% confidence interval is
( 27.126 , 34.674)
Hi there! :)
Answer:

Given:

The given expression is a logarithm with a base of 10, therefore we can rewrite this as:

Evaluate:

I’m pretty sure the scale factor is 1/3 since it’s dilating. Cause 9/3=3 and 6/3= 2
4/12 and 6/18 because all the fractions (2/6,4/12, and 6/18) reduce down to 1/4.
Answer: 15
Step-by-step explanation: