Question

Giving a test to a group of students, the grades and gender are
summarized below

A | B | C | Total | |

Male | 17 | 10 | 5 | 32 |

Female | 3 | 8 | 13 | 24 |

Total | 20 | 18 | 18 | 56 |

Let ππ represent the percentage of all male students who would
receive a grade of C on this test. Use a 95% confidence interval to
estimate p to three decimal places.

Enter your answer as a tri-linear inequality using decimals (not
percents).

< p <

Answer #1

Given that,

Point estimate = sample proportion = = x / n = 5 / 18 = 0.27 8

Z_{/2}
= 1.96

Margin of error = E = Z_{
/ 2} *
((
* (1 -
)) / n)

= 1.96 * (((0.2778 * 0.7222) / 18)

= 0.207

A 95% confidence interval for population proportion p is ,

- E < p < + E

0.278 - 0.207 < p < 0.278 + 0.207

0.071 < p < 0.485

Giving a test to a group of students, the grades and gender are
summarized below
A
B
C
Total
Male
19
9
7
35
Female
14
8
11
33
Total
33
17
18
68
Let p represent the population proportion of all female students
who received a grade of C on this test. Use a 98% confidence
interval to estimate p to four decimal places if possible.

Giving a test to a group of students, the grades and gender are
summarized below
A
B
C
Total
Male
4
9
17
30
Female
6
13
2
21
Total
10
22
19
51
Let p represent the population proportion of all female students
who received a grade of B on this test. Use a 90% confidence
interval to estimate p to four decimal places if possible.
< p <

Giving a test to a group of students, the grades and gender are
summarized below A B C Total Male (A)14 (B)17 (C)4 35 Female (A)19
(B)13 (C)10 42 Total (A)33 (B)30 (C)14 77 Let p represent the
population proportion of all female students who received a grade
of C on this test. Use a 98% confidence interval to estimate p to
four decimal places if possible.
____ < p< _____

A test was given to a group of students. The grades and gender
are summarized below: A B C Total Male 9 11 15 35 Female 4 10 14 28
Total 13 21 29 63 Let p represent the percentage of all male
students who would receive a grade of B on this test. Use a 85%
confidence interval to estimate p to three decimal places. Enter
your answer using decimals (not percents).

10.) Giving a test to a group of students, the grades and gender
are summarized below
Grades and Gender
A
B
C
Total
Male
16
3
9
28
Female
12
17
7
36
Total
28
20
16
64
If one student is chosen at random, find the probability that
the student was female OR got an "B". Round your answer to 4
decimal places.
11.)
Giving a test to a group of students, the grades and gender are
summarized below....

A.
A test was given to a group of students. The grades and gender
are summarized below:
A
B
C
Total
Male
17
16
7
40
Female
4
3
12
19
Total
21
19
19
59
Let p represent the percentage of all female students who would
receive a grade of C on this test. Use a 85% confidence interval to
estimate p to three decimal places.
Enter your answer using decimals (not percents).
B. You are performing a left-tailed...

Giving a test to a group of students, the grades and gender are
summarized below A B C Total Male 11 12 3 26 Female 19 15 5 39
Total 30 27 8 65 If one student is chosen at random, Find Giving a
test to a group of students, the grades and gender are summarized
below
A
B
C
Total
Male
11
12
3
26
Female
19
15
5
39
Total
30
27
8
65
If one student is...

Please explain step by step.
Giving a test to a group of students, the grades and gender are
summarized below
A
B
C
Total
Male
4
9
8
21
Female
11
15
10
36
Total
15
24
18
57
Let p represent the proportion of all male students who
would receive a grade of C on this test. Use a 98% confidence
interval to estimate p to three decimal
places.
__________________ < p < __________________

Giving a test to a group of students, the grades and gender are
summarized below
A B C Total
Male 8 9 2 19
Female 10 13 20 43
Total 18 22 22 62
If one student is chosen at random,
1. Find the probability that the student got a C:
2. Find the probability that the student was male AND got a
"B":
3. Find the probability that the student was male OR got an
"B":
4....

Giving a test to a group of students, the grades and gender are
summarized below
A
B
C
Total
Male
5
4
11
20
Female
10
9
19
38
Total
15
13
30
58
If one student was chosen at random,
find the probability that the student got an A.
(Enter your answer in decimal format rounded to 2
decimal places if necessary; do not convert to percentage)

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