By the definition, An observed value of \bar{x} to estimate the mean of population is a point estimate and the statistic \bar{x} is a poiont estimator.
It is given that, "Hen 430 randomly selected light bulbs were tested in a laboratory"
That is, the Random sample size n= 430
The statement given that, "224 lasted more than 500 hours"
So x=224
Now find a point estimate of the last more than 500 hours proportion of all light bulbs:
Thus
This implies that
Thus the answer is D: 0.521.
Answer:
Hey
Step-by-step explanation:
Hey did you find the answers to this? i really need it. im desperate!
Okay so 3x-6(1/2x+4)=-12. 3x-3x-24=-12. x-24=-12.x=-36
Answer: Well Where's the question?