Question
20) The following data represent the number of siblings (brothers and sisters) in the families of...
20)
The following data represent the number of siblings (brothers and sisters) in the families of 20 students who were surveyed. 0 siblings = 3, 1 sibling = 6, 2 siblings =7, 3 siblings = 2, 4 siblings = 2. What is the probability of randomly selecting a student with 2 or more siblings? two decimal fraction or percentage
Homework Answers
Answer #1
We are provided with the following information:
| Number of siblings | Count |
| 0 | 3 |
| 1 | 6 |
| 2 | 7 |
| 3 | 2 |
| 4 | 2 |
| Total | 20 |
We need to find the following probability:
P(Selecting a student with two or more siblings)
= number of students with two or more siblings / Total number of students
Let me know in the comments if anything is not clear. I will reply ASAP! Please do upvote if satisfied!
Not the answer you're looking for?
Similar Questions
The General Social Survey asked a sample of adults how many siblings (brothers and sisters) they...
The General Social Survey asked a sample of adults how many
siblings (brothers and sisters) they had (X) and also how
many children they had (Y). We show results for those who
had no more than 4 children and no more than 4 siblings. Assume
that the joint probability mass function is given in the following
contingency table:
y
x
0
1
2
3
4
0
0.03
0.01
0.02
0.01
0.01
1
0.09
0.05
0.08
0.03
0.01
2
0.08
0.05...
60 randomly selected students were asked how many siblings were in their family. Let X =...
60 randomly selected students were asked how many siblings were
in their family. Let X = the number of pairs of siblings in the
student"s family. The results are as follows:
Siblings
Frequency
1
13
2
22
3
15
4
6
5
3
6
0
7
1
Round your answers to two decimal places.
93.33% of all respondents have had at most how many
siblings?
A random sample of 20 students is collected and the number of siblings students have is...
A random sample of 20 students is collected and the number of
siblings students have is recorded:
1
2
2
3
4
1
2
4
3
2
0
3
4
2
2
1
3
2
3
0
Construct a 90% confidence interval for the mean number of
siblings.
Instructions: For this discussion, everyone in a prior class told me how many siblings they have....
Instructions: For this discussion, everyone in a prior class
told me how many siblings they have.
That data is in the chart (below). For example, if someone had
three siblings, then they put an X
in the row for Three Siblings. First, determine the frequency of
siblings. Then answer the
questions that follow/
Number of Siblings
Running Tally of Number of Siblings (Brothers and
Sisters) (Put a x each time the category applies)
Frequency
Zero (no) siblings xxxxxxxxxxx 11
One...
Members of fraternities and sororities are required to volunteer for community service. Do fraternity brothers work...
Members of fraternities and sororities are required to volunteer
for community service. Do fraternity brothers work an equal number
of volunteer hours on average compared to sorority sisters? The
data below show the number of volunteer hours worked for twelve
randomly selected fraternity brothers and thirteen randomly
selected sorority sisters. Brothers: 6 12 5 9 14 11 10 12 4 8 11 12
Sisters: 11 10 16 4 5 19 12 10 14 11 6 4 9 Assume both follow...
55 randomly selected students were asked how many siblings were in their family. Let X -...
55 randomly selected students were asked how many siblings were
in their family. Let X - the number of pairs of siblings in the
student's family. The results are as follows:
# of Siblings
0
1
2
3
4
5
Frequency
10
6
14
8
6
11
Round all your answers to one decimal place.
The mean is:
The median is:
The sample standard deviation is:
The first quartile is:
The third quartile is:
What percent of the respondents have...
3. The probability distribution for the number of siblings (Y) for students in a statistics class...
3. The probability distribution for the number of siblings (Y)
for students in a statistics class is given by
y 0 1 2 3 4
p(y) 0.3 0.3 0.2 0.15 ?
a. Find the missing probability.
b. Find the mean of the distribution.
c. Find the variance of the distribution.
4. A fair die is rolled 120 times. Let Y represent the number of
times a three comes up.
a. Find the P(Y =19). Do this one by hand using...
The following table lists the probability distribution of the number of refrigerators owned by all families...
The following table lists the probability distribution of the
number of refrigerators owned by all families in a city.
x 0 1 2 3 P(x) 0.04 0.63 0.24 0.09
The probability that a randomly selected family owns exactly two
refrigerators is:
The probability that a randomly selected family owns at most one
refrigerator is:
The probability that a randomly selected family owns at least
two refrigerators is: The probability that a randomly selected
family owns less than two refrigerators is:...
The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have...
The Acme Company manufactures widgets. The distribution of
widget weights is bell-shaped. The widget weights have a mean of 57
ounces and a standard deviation of 6 ounces.
a) 95% of the widget weights lie between and
b) What percentage of the widget weights lie between 39 and 69
ounces? %
c) What percentage of the widget weights lie below 63
? %
57 randomly selected students were asked how many siblings were
in their family. Let X represent the number of pairs...
Suppose that the following frequency table contains data on the number of absences in a school...
Suppose that the following frequency table contains data on the
number of absences in a school year due to illness or injury for
100 randomly selected high school students. Use the table to
determine the median number of absences for these 100 students.
Provide your answer with precision to one decimal place.
Number of absences
Frequency
0
25
1
10
2
10
3
5
4
9
5
12
6
9
7
9
8
4
9
2
10
3
11
2...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 2 minutes ago
asked 10 minutes ago
asked 25 minutes ago
asked 26 minutes ago
asked 37 minutes ago
asked 52 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago