In an experiment conducted online at the University of Mississippi, study participants are asked to react to a stimulus. In one experiment, the participant must press a key on seeing a blue screen and the reaction time in seconds) to press the key is
measured. The same person is then asked to press a key on seeing a red screen, again with reaction time measured. The
results for six randomly sampled study participates are as follows:
1
2
3
4
5
6
Participant
Blue (X)
Red (Y)
0.599
0.501
0.835
0.301
0.685
0.460
0.408
0.407
0.542
0.402
0.456
0.533
Is there sufficient evidence
conclude that people react faster to a red stimulus? Use a = 0.1.
a) For d = X - Y , what does it mean ford to be positive? (Did they react faster to the red or blue stimuli?)
b) What is the null and alternative hypothesis?
c) What is the test statistic and p-value?
d) Should we reject the null hypothesis?

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)

sorry

step-by-step explanation:

sorry, but im pretty sure its a now that i look at it

for future students the answer is b

hope i

-lavira: )

1. when "a" is a root of a polynomial, (x -a) is a factor of it. for the three roots given, the factors of the desired polynomial are (x +2)(x -1/2)(x -3).

in order to make the leading coefficient be negative, we need to multiply this product by a negative number. any negative number will do, but we choose a small (magnitude) value that will eliminate the fraction: -2.

then

f(x) = -2(x +2)(x -1/2)(x -3) = -(x +2)(2x -1)(x -3)

= -(2x² +3x -2)(x -3)

= -(2x³ -3x² -11x +6)

f(x) = -2x³ +3x² +11x -6

2. a graph created by the desmos on-line graphing calculator is shown, and the zeros are highlighted.

3. as indicated in part 1, the multiplier of this equation can be anything and the zeros will remain the same. you want a negative leading coefficient, so the "anything" is restricted to any of the infinite number of numbers that will make that be the case.