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Answer with explanation</u>
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Let 
be the average life of light bulbs.
As per given , we have
Null hypothesis : 
Alternative hypothesis : 
Since 
is right-tailed and population standard deviation is also known, so we perform right-tailed z-test.
Formula for Test statistic : 
where, n= sample size
= sample mean
= Population mean
=population standard deviation
For 
, we have
Using z-value table , Critical one-tailed test value for 0.06 significance level :
Decision : Since critical z value (1.5548) < test statistic (1.6180), so we reject the null hypothesis .
[We reject the null hypothesis when critical value is less than the test statistic value .]
Conclusion : We have enough evidence at 0.06 significance level to support the claim that the new filament yields a longer bulb life
Answer:
Your answer is 15
Step-by-step explanation:
2+5= 7
7+5= 12
12+5=17
17-2= 15
I’m so sorry I forgot about you texting me lol I just got home and I’m not getting tired
Answer:
(5,2)
Step-by-step explanation:
The first coordinate is the x coordinate or the distance left or right from the origin. To get to L we go 5 units to the right or +5.
The second coordinate is the y coordinate or the distance up or down, We go 2 units up or +2
(5,2)
