A 95% confidence interval for the mean was computed with a sample of size 90 to be [16,22]. Then the margin of error for this is +3. True?
False?

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Witch represents the inverse of the function f(x)=1/4x-12

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle