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Anika [276]
3 years ago
15

An experiment was designed to measure how long subjects could track a moving target on a computer screen. The target moved errat

ically according to a predetermined program. As the experiment was designed, the first 6 subjects (volunteers recruited by signs along the main campus walkway) were tested under a control condition with no distractions, the next 12 were to be tested under a flashing light distraction, and the next 18 were to be tested under a loud noise distraction. The experiment was carried out as designed. The data (times in seconds) were as follows (listed in the sequence from first to last subject). a. Compute an ANOVA table b. Find the value of the F statistic c. What is the nominal p value for the F statistic? 5653544940 42 44 42 43 40 39 35 37 38 32 50 30 32 34 40 30 31 2927 28 2626 27 25 24 20 22 19 17 10 31 Distraction Light distraction Sound Distraction

Mathematics
1 answer:
White raven [17]3 years ago
5 0

Answer:

Step-by-step explanation:

F value is 33.3792

p value is 0 so reject H0 that means the they are not statistically significant.

check attachment

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I'M OFFERING 20 POINTS-
Dafna11 [192]

Answer:

Third option is correct. Scale factor 3 ; enlargement.

Step-by-step explanation:

It is given that the figure A'B'C'D' is a dilation of figure ABCD.

We know that after dilation the corresponding sides of image and preimage are in the same proportion.

The image of AD is A'D'.

From the figure it is noticed that the A(-1,2), D(-1,-1), A'(-3,6) and D'(-3,-3).

Distance formula is

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

AD=\sqrt{(-1+1)^2+(-1-2)^2}=\sqrt{9}=3

A'D'=\sqrt{(-3+3)^2+(-3-6)^2}=\sqrt{81}=9

Scale factor is constant which represents the relation between image and preimage.

k=\frac{A'D'}{AD}

k=\frac{9}{3}

k=3

Therefore the scale factor is 3.

If k>0 it means enlargement and if k<0 it means reduction. Therefore third option is correct.

3 0
3 years ago
Read 2 more answers
Which graph correctly solves the system of equations below? <br> y=-x^2+1 <br> y=x^2-4
KIM [24]
Red line shows
y=x^2-4 , cause it's going through point (0,-4)

So blue line shows
y= -x^2+1 Point (1,0) belong to it , moreover x factor is negative , so the arms of parabola will go down

Have nice evenig :)
Greetings From Poland.
5 0
3 years ago
The number 260 is separate into two parts of the first part is eight more than three times the second part. what are the two num
bagirrra123 [75]

Answer:

63 & 197

Step-by-step explanation:

260  = (3x + 8) + x

260 = 4x + 8

x = 63

Thus second number is 3*63+8=197

5 0
3 years ago
Read 2 more answers
In order to test whether the average waiting time this year differs from last year, a sample of 25 data were collected this year
netineya [11]

Answer:

(B) 0.74 + or - 2.797 × 0.22/√25

Step-by-step explanation:

Confidence Interval = mean + or - t × sd/√n

mean = 0.74 hours

sd = 0.22 hours

n = 25

degree of freedom = n - 1 = 25 - 1 = 24

Confidence level = 99%

t-value corresponding to 24 degrees of freedom and 99% confidence level is 2.797

Confidence Interval = 0.74 + or - 2.797 × 0.22/√25

4 0
3 years ago
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Write each percent as a decimal 21% 0.4%​
Karo-lina-s [1.5K]
21% is 0.21
0.4% is 0.004
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3 years ago
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