A pipes manufacturer makes pipes with a length that is supposed to be 13 inches. A quality control technician sampled 25 pipes and found that the sample mean length was 13.04 inches and the sample standard deviation was 0.14 inches. The technician claims that the mean pipe length is not 13 inches. 1. What type of hypothesis test should be performed? What is the test statistic?

2. What is the number of degrees of freedom?

3. Does sufficient evidence exist at the a= 0.1 significance level to support the technician's claim?

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.