According to the article "modeling and predicting the effects of submerged arc weldment process parameters on weldment characteristics and shape profiles" (j. of engr. manuf., 2012: 1230-1240), the submerged arc welding (saw) process is commonly used for joining thick plates and pipes. the heat affected zone (haz), a band created within the base metal during welding, was of particular interest to the investigators. here are observations on depth (mm) of the haz both when the current setting was high and when it was lower. non-high 1.04 1.15 1.23 1.69 1.92 1.98 2.36 2.49 2.72 1.37 1.43 1.57 1.71 1.94 2.06 2.55 2.64 2.82 high 1.55 2.02 2.02 2.05 2.35 a. construct a comparative boxplot and comment on b. is it reasonable to use the two-sample t test to test 2.57 2.93 2.94 2.97 interesting features. hypotheses about the difference between true aver- age haz depths for the two conditions? does it appear that true average haz depth is larger for the higher current condition than for the lower condition? carry out a test of appropriate hypotheses using a significance level of.01.

dalila is incorrect. the whisker on the left is very long, going all the way out to 5. the whisker goes from 5 to 30, so it has a spread of 25. the rest of the box plot values are closer together, so 5 is an outlier

care to share were the trapezoid shown is ?

the above table 1 will calculate the population size (n) after a certain length of time (t). all you need to do is plug in the initial population number (no), the growth rate (r) and the length of time (t). the constant (e) is already entered into the equation. it stands for the base of the natural logarithms (approximately 2.71828). growth rate (r) and time (t) must be expressed in the same unit of time, such as years, days, hours or minutes. for humans, population growth rate is based on one year. if a population of people grew from 1000 to 1040 in one year, then the percent increase or annual growth rate is 40/1000 x 100 = 4 percent.

step-by-step explanation:

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)