Question
In: Statistics and Probability
As part of a school project students will be randomly sampling from the students in the...
As part of a school project students will be randomly sampling from the students in the class. The assignment is to estimate the proportion of students who play on a sports team. Each student will randomly select 6 students. One student found out that 3 of the 6 play a sport. The teacher has collected data from all students and found that out of the 31 students in the class 21 of them played sports.
Give the statistic for the percentage of students who play sports.
____%
Solutions
Expert Solution
Solution:
As part of a school project, students will be randomly sampling from the students in the class. The assignment is to estimate the proportion of students who play on a sports team.
Each student will randomly select 6 students. One student found out that 3 of the 6 play a sport.
The teacher has collected data from all students and found that out of the 31 students in class 21 of them played sports.
We have to give the statistic for the percentage of students who play sports.
We know, statistics is a function of sample values or observations and we estimate unknown parameter using the statistics.
Here, we have one sample of where one student found out that 3 of the 6 play a sport.
Hence, the statistic for the percentage of students who play sports is given by,
where, 
Answer: The statistic for the percentage of students who play sports is = 50%.
orchestra answered 2 years agoRelated Solutions
: Students from Elementary school were randomly separated into 4 groups and each group was taught...
: Students from Elementary school were randomly
separated into 4 groups and each group was taught a mathematical
concept using a different teaching method. At the end of the
teaching period, progress was measured by a unit test. The scores
of shown below: (one child in group three was absent on the day the
test was administered.)
(1) Construct an ANOVA table
(2) Do the data present significant evidence to indicate a
difference in the average scores for the four...
A school newspaper reporter decides to randomly survey 17 students to see if they will attend...
A school newspaper reporter decides to randomly survey 17
students to see if they will attend Tet (Vietnamese New Year)
festivities this year. Based on past years, she knows that 21% of
students attend Tet festivities. We are interested in the number of
students who will attend the festivities.
a. In words, define the Random Variable X.
b. List the values that X may take on.
c. Give the distribution of X.
X ~ ____ ( ____ , ____ )...
A school newspaper reporter decides to randomly survey 20 students to see if they will attend...
A school newspaper reporter decides to randomly survey 20
students to see if they will attend Tet (Vietnamese New Year)
festivities this year. Based on past years, she knows that 23% of
students attend Tet festivities. We are interested in the number of
students who will attend the festivities.
In words, define the Random Variable X.
Part (b)
List the values that X may take on.
X = 0, 1, 2, ..., 23 X = 1, 2, 3, ...,
20 X...
The SAT scores of 20 randomly selected high school students has a mean of =1,185 and...
The SAT scores of 20 randomly selected high school students has
a mean of =1,185 and a sample standard deviation s=168.0. Construct
an 98% confidence interval for the true population mean and
interpret this interval
The SAT scores of 20 randomly selected high school students has a mean of =1,185 and...
The SAT scores of 20 randomly selected high school students has
a mean of =1,185 and a sample standard deviation s=168.0. Construct
an 98% confidence interval for the true population mean and
interpret this interval
The weekly time spent (in hours) on homework for 18 randomly selected high school students is...
The weekly time spent (in hours) on homework for 18 randomly
selected high school students is given below. Use technology to
construct 90%, 95%, and 99% confidence intervals for the
population mean. Interpret the results and compare the widths of
the confidence intervals. Assume the weekly time spent on homework
is normally distributed. 13.113.1 12.112.1 14.714.7 15.215.2 8.68.6
10.710.7 11.811.8 8.58.5 9.99.9 9.69.6 11.111.1 11.911.9 15.915.9
11.911.9 12.212.2 11.511.5 13.513.5 12.212.2 The lower limit of
the 90% confidence interval is...
A school is considering two different videos for a class. Students have been randomly assigned to...
A school is considering two different videos for a class.
Students have been randomly assigned to two groups, and they all
take the same written assignment after viewing the video. The
scores are summarized below: Video 1: sample mean = 75, sample
standard deviation = 7.7, sample size = 26 Video 2: sample mean =
79, sample standard deviation = 6.4, sample size = 26
Conduct an analysis to determine whether there is a difference
in the test scores for...
An agency offers preparation courses for a graduate school admissions test to students. As part of...
An agency offers preparation courses for a graduate school
admissions test to students. As part of an experiment to evaluate
the merits of the course, 40 students were chosen and divided into
20 pairs in such a way that the members of any pair had similar
academic records. Before taking the test, one member of each pair
was assigned at random to take the preparation course, while the
other member did not take a course. The achievement test scores are...
Within a school district, students were randomly assigned to one of two Math teachers - Mrs....
Within a school district, students were randomly assigned to
one of two Math teachers - Mrs. Smith and Mrs. Jones. After the
assignment, Mrs. Smith had 30 students, and Mrs. Jones had 25
students. At the end of the year, each class took the same
standardized test. Mrs. Smith's students had an average test score
of 78, with a standard deviation of 10; and Mrs. Jones' students
had an average test score of 85, with a standard deviation of 15....
Question 1: A school is considering two videos for a class. Students have been randomly assigned...
Question 1: A school is considering two videos
for a class. Students have been randomly assigned to 2 groups, and
they all take the same written test after watching the video. The
scores are summarized below:
Video 1: sample mean = 77, sample standard deviation = 6.3,
sample size = 29
Video 2: sample mean = 78, sample standard deviation = 6.8, sample
size = 28
Conduct an analysis to determine whether there is a difference in
the test scores...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Search the Internet to find (at least 2 websites) related to the general field of malware....
- Consider the following schema: Suppliers(sid, sname, address) Parts(pid, pname, color) Catalog(sid, pid, cost) write the following...
- Singh Development Co. is deciding whether to proceed with Project X. The cost would be $12...
- CS2123 Data Structures - Fall 2019 Assignment 1: Function Runtimes Table Due 9/11/19 by 11:59pm Completing...
- Question 2. Design a 16-1 MUX using any number of lower MUXs, such as 8-1 or...
- . Write a function that takes, as arguments, two objects, value1 and value2. If
- Wii Brothers, a game manufacturer, has a new idea for an adventure game. It can market...
ADVERTISEMENT