The graph highlights two other points on the trend line. Use them to find another equation for the trend line shown for this sca
tter plot.
Y=82x+998 , Y=247.7x-335 , Y=743x-1647 , Y=998+82 ?
Y=82x+998 , Y=247.7x-335 , Y=743x-1647 , Y=998+82 ?
2 answers:
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Answer:
option (C) 173.8 mg less than < mu μ less than <196.2 mg
Step-by-step explanation:
Data provided ;
number of sample, n = 12
Mean = 185 milligram
standard deviation, s = 17.6 milligrams
confidence level = 95%
α = 0.05 [for 95% confidence level]
df = n - 1 = 12 - 1 = 11
Now,
Confidence interval = Mean ± E
here,
E is the margin of error =
also,
=
= 2.201 [ from standard t value table]
Thus,
E =
or
E = 11.182 milligrams ≈ 11.2 milligrams
Therefore,
Confidence interval:
Mean - E < μ < Mean + E
or
185 - 11.2 < μ < 185 + 11.2
or
173.8 < μ < 196.2
Hence,
the correct answer is option (C) 173.8 mg less than < mu μ less than <196.2 mg