Once Isabel rented the warehouse space, she decided to post ads on several social media sites to advertise her online bookstore.
1 answer:
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Answer:
98% Confidence interval: (4.144 ,4.498)
Step-by-step explanation:
We are given the following in the question:
4.751, 4.373, 4.177, 4.676, 4.425, 4.228, 4.125, 4.251, 3.951, 4.192, 4.291, 4.414
Formula:
where are data points,
is the mean and n is the number of observations.
Sum of squares of differences = 0.5602
98% Confidence interval:
Putting the values, we get,