what is the intervals in math

The critical t value for a sample size of 15 is - 1.542. The test is left tailed. What is the interval of p -value in the t test? => between 0.10 and 0.20 or between 1.345 and 1.761 or between 0.05 and 0.10 or cannot be determined..

A function f(x) is said to be continuous in an interval I, if it is continuous at each point of I. then x can approach c both from the left and the right and so for f (x) to be continuous at c, we must have If the interval I is the closed interval [a,b], then x cannot ..

What is the interval in which f ( x ) = tan 8 x is concave upward? => (0, π 1 6 ) ∪ ( π 1 6 , 3 π 1 6 ) or (0, π 1 6 ) or (0, π 1 6 ) ∪ ( π 8 , 3 π 1 6 ) or (- π 1 6 , π 2 )..

The formula for the confidence interval for a variance is _________ . => IV. or II. or III. or I...

What is the interval in which f ( x ) = e 7 x sin 7 x is concave downward? => (0, π 2 ) or (0, π) or (- π 2 , 0) or ( π 1 4 , 3 π 1 4 )..

What is the interval in which f ( x ) = x - 8 x - 7 is concave downward ? => (0, ∞) or (- ∞, 7 ) or (- ∞, ∞) or (7, ∞)..

What is meant by 95% confidence interval of the mean? => 95% of the specific sample means will fall within ± 1.96 standard errors of the population mean. or 95% of the specific sample means will fall within ± 2.58 standard errors of the population mean. or There is..

What is the interval in which f ( x ) = 3 x 3 + 27 x 2 + 12 x + 40 is concave downward? => (- ∞, - 3) or (- 3, ∞) or (- ∞, 3) or (- ∞, ∞)..

When a 95% confidence interval is calculated instead of a 90% confidence interval with the same sample, the maximum error of estimate will be _____ . => either smaller or larger depending on sample size or the same or smaller or larger..

What are the end points of the interval [- 5, 4] ? => - 4 &∞ or - ∞ & 5 or - 5 & 4 or - ∞, ∞..