A computer scientist is investigating the usefulness of two different design languages in improving programming tasks. Twelve expert programmers who are familiar with both languages are asked to code a standard function in both languages and the time (in minutes) is recorded. The data follow: Time Programmer DL 1 DL 2 1 17 18 2 16 14 3 21 19 4 14 11 5 18 23 6 24 21 7 16 10 8 14 13 9 21 19 10 23 24 11 13 15 12 18 20 Find a 95% confidence interval on the difference in mean coding times. Is there any indication that one design language is preferable? O a. -1.216 Hd ≤ 2.55. Because zero is not contained within this interval, one cannot conclude that one design language is preferable at a 1% significance level b. -1.216 M S 2.55. Because zero is contained within this interval, one cannot conclude that one design language is preferable at a 5% significance level Oc. -1.216 ≤ Ha ≤ 2.55. Because zero is not contained within this interval, one can conclude that one design language is preferable at a 5% significance level O d. None among the choices
A computer scientist is investigating the usefulness of two different design languages in improving programming tasks. Twelve expert programmers who are familiar with both languages are asked to code a standard function in both languages and the time (in minutes) is recorded. The data follow: Time Programmer DL 1 DL 2 1 17 18 2 16 14 3 21 19 4 14 11 5 18 23 6 24 21 7 16 10 8 14 13 9 21 19 10 23 24 11 13 15 12 18 20 Find a 95% confidence interval on the difference in mean coding times. Is there any indication that one design language is preferable? O a. -1.216 Hd ≤ 2.55. Because zero is not contained within this interval, one cannot conclude that one design language is preferable at a 1% significance level b. -1.216 M S 2.55. Because zero is contained within this interval, one cannot conclude that one design language is preferable at a 5% significance level Oc. -1.216 ≤ Ha ≤ 2.55. Because zero is not contained within this interval, one can conclude that one design language is preferable at a 5% significance level O d. None among the choices
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![A computer scientist is investigating the usefulness of two different design languages in
improving programming tasks. Twelve expert programmers who are familiar with both
languages are asked to code a standard function in both languages and the time (in minutes) is
recorded. The data follow:
Time
Programmer
DL 1
DL 2
1
17
18
2
16
14
3
21
19
4
14
11
5
18
23
6
24
21
7
16
10
8
14
13
9
21
19
10
23
24
11
13
15
12
18
20
Find a 95% confidence interval on the difference in mean coding times. Is there any indication
that one design language is preferable?
a. -1.216 ≤ Hd ≤ 2.55. Because zero is not contained within this interval, one cannot
conclude that one design language is preferable at a 1% significance level
b. -1.216 a 2.55. Because zero is contained within this interval, one cannot
conclude that one design language is preferable at a 5% significance level
Oc. -1.216 ≤ Ma ≤ 2.55. Because zero is not contained within this interval, one can
conclude that one design language is preferable at a 5% significance level
d. None among the choices](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0c6ba795-f3b0-4c13-b6aa-1d05bc82fe46%2F9714b7d3-375d-4e1d-8c02-e2c2d5ebb9ad%2F94lu6ah_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A computer scientist is investigating the usefulness of two different design languages in
improving programming tasks. Twelve expert programmers who are familiar with both
languages are asked to code a standard function in both languages and the time (in minutes) is
recorded. The data follow:
Time
Programmer
DL 1
DL 2
1
17
18
2
16
14
3
21
19
4
14
11
5
18
23
6
24
21
7
16
10
8
14
13
9
21
19
10
23
24
11
13
15
12
18
20
Find a 95% confidence interval on the difference in mean coding times. Is there any indication
that one design language is preferable?
a. -1.216 ≤ Hd ≤ 2.55. Because zero is not contained within this interval, one cannot
conclude that one design language is preferable at a 1% significance level
b. -1.216 a 2.55. Because zero is contained within this interval, one cannot
conclude that one design language is preferable at a 5% significance level
Oc. -1.216 ≤ Ma ≤ 2.55. Because zero is not contained within this interval, one can
conclude that one design language is preferable at a 5% significance level
d. None among the choices
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