Mathematics, 22.03.2021 16:20 genyjoannerubiera

As part of a class project, students measured the circumferences of a random sample of 45 blue spruce tress The sample mean circumference was
29.8 inches. Assume that the standard deviation for all blue spruce trees
is
known to be 7.2 inches. Find a 95% confidence intervall for the population
mean of all blue spruce trees. Round to two decimal places

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