Answer:
b) yes
The manufacturer has the right to state that the light bulbs last on average 400 hours
Step-by-step explanation:
<u><em>Explanation:-</em></u>
<em>Given sample size 'n' = 64</em>
<em>Given standard deviation of the Population (σ)=100</em>
<em>Mean of the sample (x⁻) = 350 hours</em>
<em>95% of confidence interval is determined by</em>

(
(350-24.5 , 350+24.5)
<em>(325.5 , 374.5)</em>
<u><em>Conclusion:-</em></u>
<u><em>Yes</em></u>
The manufacturer has the right to state that the light bulbs last on average 400 hours
60*80/100-$10*155/100
48-$10*155/100=$58.90
Answer:
A. 7.64
Step-by-step explanation:
The answer is 36°
Hope that helps, Good luck! (:
Answer:
C
Step-by-step explanation:
The same x value cannot be used more than once or it isn't a function.