A researcher records the following response times to a visual stimulus: 23 ± 3.1 ( M ± SD) s. Assuming these data are normally distributed, what is the probability that participants responded in 20 s or less

0.1666

Step-by-step explanation:

A researcher records the following response times to a visual stimulus: 23 ± 3.1 ( M ± SD) s. Assuming these data are normally distributed, what is the probability that participants responded in 20 s or less

z=X-U/SD

z=(20-23)/3.1

z=-0.9677

checking the negative part of the z score table. we go to

-0.97

that is -0.9 under 0.07

the value we get is 0.1666

P(x<20) means that P(z<-0.97)

0.1666

4th option is correct xy=-10

if this was to u plzz mark me the brainliest

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet