To estimate the mean length of rattlesnakes, 10 such snakes are randomly selected. Their lengths, in inches, are as follows: 40. 2 43.1 45.4 44.5 39.5 40.2 41.0 41.6 43.1 44.9 Find a 90% confidence interval for the mean length of all rattlesnakes.
1 answer:
Answer:
The confidence interval will be "41.04, 43.81 ".
Step-by-step explanation:
Given that,
Sample size,
n = 10
Sample total,
423.5
Sample mean,
Sample variance,
Now,
The margin of error will be:
⇒
hence,
The 90% confidence level will be:
=
By substituting the values, we get
=
=
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