We wish to see if the dial indicating the oven temperature for a certain model oven is properly calibrated. four ovens of this model are selected at random. the dial on each is set to 300°f, and after one hour, the actual temperature of each is measured. the temperatures measured are 305°, 310°, 300°, and 305°. assume that the distribution of the actual temperatures for this model when the dial is set to 300° is normal. to test if the dial is properly calibrated, we will test the following hypotheses: h0: μ = 300 versus ha: μ ≠ 300. based on the data, what is the value of the one-sample t statistic? a. 4.90 b. 5.0 c. 2.45 d. 1.23

Find the difference (8ab+a+2) - (3ab+6)

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

In δabc shown below, ∠bac is congruent to ∠bca: triangle abc, where angles a and c are congruent given: base ∠bac and ∠acb are congruent. prove: δabc is an isosceles triangle. when completed (fill in the blanks), the following paragraph proves that line segment ab is congruent to line segment bc making δabc an isosceles triangle. (4 points) construct a perpendicular bisector from point b to line segment ac . label the point of intersection between this perpendicular bisector and line segment ac as point d: m∠bda and m∠bdc is 90° by the definition of a perpendicular bisector. ∠bda is congruent to ∠bdc by the definition of congruent angles. line segment ad is congruent to line segment dc by by the definition of a perpendicular bisector. δbad is congruent to δbcd by the line segment ab is congruent to line segment bc because consequently, δabc is isosceles by definition of an isosceles triangle. 1. corresponding parts of congruent triangles are congruent (cpctc) 2. the definition of a perpendicular bisector 1. the definition of a perpendicular bisector 2. the definition of congruent angles 1. the definition of congruent angles 2. the definition of a perpendicular bisector 1. angle-side-angle (asa) postulate 2. corresponding parts of congruent triangles are congruent (cpctc)