Question
In: Statistics and Probability
The variable to be measured is the number of hours a ten year old spend watching...
The variable to be measured is the number of hours a ten year old spend watching videos . Using three distributions-
1 Distribution of a population of an individual
2 Distribution of a particular sample of individuals from the population
3 Distribution of the mean
Explain the difference in these three distribution to some one who has never taken statistics class before.
Solutions
orchestra answered 2 years agoRelated Solutions
The variable being measured is the number of hours a 10 year old spend watching videos....
The variable being measured is the number of hours a 10 year old
spend watching videos. Using three distribution-
1 Distribution of a population of individuals
2 Distribution of a particular sample of individuals fro the
population
3 Distribution of mean
Explain the difference in all three distributions to someone who
has never taken statistics class before.
A study finds that eight year old American children spend an average of 4.9 hours watching...
A study finds that eight year old American children spend an
average of 4.9 hours watching TV or playing video games on Sundays
with a standard deviation of 2.08 hours. Find the probability that
a randomly selected American eight year old would spend between 5
and 6 hours watching television or playing video games on a
Sunday.
Assume the distribution is normal. Draw the distribution and shade
the region in question. Then find the area of the shaded
region.
A random sample of American children was taken to estimate the total number of hours they spend watching cartoons in an average week.
0
3
1
20
9
5
10
1
10
4
14
2
4
4
5
A random sample of American children was taken to estimate the total number of hours they spend watching cartoons in an average week. The responses above were chosen from a simple random sample of 15 children and the data was normally distributed.
Create a 98% confidence interval for the mean number of hours
American children spend watching cartoons in one week.
1st: Identify point estimate ...
2. Four roommates are planning to spend the weekend in their dorm room watching old movies, and...
2. Four roommates are planning to spend the
weekend in their dorm room watching old movies, and they are
debating how many to watch. Here is their willingness to pay for
each film:
Judd Joel Gus Tim
first film $ 7 $ 5 $ 3 $ 2
second film 6 4 2 1
Third film 5 3 1 0
Fourth film 4 2 0 0
fifth film 3 1 0 0
d. Is there any way to split the cost...
If the population for the number of hours spend on reading a book each month is...
If the population for the number of hours spend on reading a
book each month is normally distributed. A random sample of 16
students in the reading club were selected and found that, they
spent an average of 70 hours each month with standard deviation of
20 hours. Construct a 95% confidence interval estimate for the
population mean hours they spend on reading books each month.
A scientist is interested in the relationship between the number of hours that bears spend sleeping...
A scientist is interested in the relationship between
the number of hours that bears spend sleeping in the week before
they wake up, and the food they received on that hunt. Data was
collected for four bears.
Hours of sleep
Food received
1
76
2
85
3
64
5
70
You are to perform a statistical analysis for the
scientist.
a. Note which variable is the independent, and which is
the dependent variable.
b. Compute the least squares estimated regression...
2. You are interested in the mean number of hours that Americans consume media (watching, reading,...
2. You are interested in the mean number of hours that Americans
consume media (watching, reading, listening to content produced by
someone else) each day. A random sample of 200 Americans consumes
an average of 10.3 hours of media per day, with a standard
deviation of 3.5 hours. Construct and interpret a 95% confidence
interval for the true mean number of hours that Americans consume
media each day.
A study indicates that 18- to 24- year olds spend a mean of 145 minutes watching...
A study indicates that 18- to 24- year olds spend a mean of 145 minutes watching video on their smartphones per month. Assume that the amount of time watching video on a smartphone per month is normally distributed and that the standard deviation is 15 minutes. Complete parts (a) through (d) below. a. What is the probability that an 18- to 24-year-old spends less than 115 minutes watching video on his or her smartphone per month? The probability that an 18- to...
A study indicates that 18- to 24- year olds spend a mean of 115 minutes watching...
A study indicates that 18- to 24- year olds spend a mean of
115 minutes watching video on their smartphones per month. Assume
that the amount of time watching video on a smartphone per month is
normally distributed and that the standard deviation is 15 minutes.
Complete parts (a) through (d) below.
a. What is the probability that an 18- to 24-year-old spends
less than
95 minutes watching video on his or her smartphone per
month?
(Round to four decimal...
A study indicates that 18- to 24- year olds spend a mean of 115 minutes watching...
A study indicates that 18- to 24- year olds spend a mean of
115 minutes watching video on their smartphones per month. Assume
that the amount of time watching video on a smartphone per month is
normally distributed and that the standard deviation is 10 minutes.
Complete parts (a) through (d) below.
a. What is the probability that an 18- to 24-year-old spends
less than 100 minutes watching video on his or her smartphone per
month?
b.What is the probability...
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