Find the GCF (greatest common factor) of 8 and 7.
1 answer:
You might be interested in
Answer:
<em> The calculated value Z = 1.8823 <1.96 at 0.05 level of significance</em>
<em> The average amount of energy used in his factory per day has changed since last year. </em>
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given that mean of the Population = 2000 (MWH)
Given that size of the sample 'n' = 400
Given that mean of sample x⁻ = 2040 MWH
Given that the standard deviation = 425 MWH per day
<u><em>Step(ii):-</em></u>
<u><em>Null hypothesis:H₀: μ = 2000 (MWH)</em></u>
<u><em>Alternative Hypothesis:H₁: μ≠ 2000( MWH)</em></u>
<em>Test statistic</em>
<em> </em><em></em>
<em> </em><em></em>
<em> Z = 1.8823</em>
<em>The calculated value Z = 1.8823 <1.96 at 0.05 level of significance</em>
<u><em>Final answer:</em></u><em>-</em>
<em> The calculated value Z = 1.8823 <1.96 at 0.05 level of significance</em>
<em> The average amount of energy used in his factory per day has changed since last year. </em>
If 
denotes the sum of the first 
terms of a geometric series with first term 
and common ratio 
, then
Using summation notation, you have
In this case, you have
, 
, and 
. So the value of the sum is
Rounded to the nearest whole number, the answer would be 3.
Using summation notation, you have
In this case, you have
Rounded to the nearest whole number, the answer would be 3.