Find the median X 20 25 29 33 38 42 43 F 6 20 24 28 15 4 2 1
2 answers:
Answer:
33 and 10.5
Step-by-step explanation:
The median is the middle number in the data set arranged in ascending order.
If there is no exact middle value then it is the average of the 2 numbers either side of the middle.
X 20 25 29 33 38 42 43
↑ middle number
Thus the median = 33
Arrange set F in ascending order.
F 1 2 4 6 15 20 24 28
↑ middle between 6 and 15
Thus the median = =
= 10.5
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<h2>Answer with explanation:</h2>
As per given , we have
Sample size : n= 5
Degree pf freedom = : df= 5-1=4
Significance level for 90% confidence =
Using t-value table , t-critical value for 90% confidence:
Margin of error of :
Interpretation : The repair cost will be within $12.39 of the real population mean value 90% of the time.