Answer:
H0: μ = 7.8
Ha: μ > 7.8
Step-by-step explanation:
The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.
For the case above;
Let μ represent the true mean length of long-distance calls after the rate reduction
The null hypothesis is that true mean length of long-distance calls after the rate reduction is the same and equal to 7.8 minutes
H0: μ = 7.8
The alternative hypothesis is that the true mean length of long-distance calls after the rate reduction have increased that is greater than 7.8 minutes
Ha: μ > 7.8
Answer:
The first four terms are 3,9,27,81
Step-by-step explanation:
<u>Step :-1</u>
Given first term of sequence is 
Given 'n' t h term is 
.............(1)
here we put n = 2 in equation (1)
..............2
put in equation (2)
put n=3 in equation (1)
put n= 4 in equation (1)
The first four terms of the sequence is
3 , 9, 27 , 81 ....this is geometric sequence
a =3 and ratio term is r =3
Answer:
i'll answer for real when I see the image ^^ this is just for reservation lol- dw i won't bail out.
Step-by-step explanation:
Answer:
28 + 0.15x = 49.30
0.15x = 49.30 - 28
0.15x = 21.3
divide both sides by 0.15
x = 21.3/0.15
x = 142
