Question

Individuals in Avocado Park spend between 10 and 90 minutes grooming in a day. Assume that this distribution is uniform.

a.Draw a graph of the distribution of grooming times for residents of Avocado Park.Label appropriately.

b.What is the probability of a resident of Avocado Park spending more than an hour grooming in a day?

What is the probability of a resident of Avocado Park spending exactly 30 minutes grooming in a day?

d.What amount of time should a resident of Avocado Park be expected to spend grooming in a day?

What is the standard deviation of grooming times for residents of Avocado Park?

In a random sample of 54 residents of Avocado Park, what would you EXPECT the mean time they spend grooming in a day to be?

g.What is the probability that a random sample of 38 residents of Avocado Park spends MORE than a combined 24hours grooming in a day?

Answer #1

the average employee in ontario spends mu=24.0 minutes commuting
to work each day. Assume that the distribution of commute times is
normal with a standard deviation of sigma=8.0 minutes.
a)what proportion of ontario employees spend less than 25
minutes a day commuting?
b)what is the probability of randomly selecting an employee who
spends more than 20 minutes commuting each day?
c) what proportion of employees spend between 11 and 15 minutes
commuting?
d)what is the 50th percentile in this distribution...

The average employee in the U.S.A. spends μ = 23 minutes
commuting to work each day. Assume that the distribution of commute
times is normal with a standard deviation of σ = 8 minutes. (a)
What proportion of U.S. employees spend less than 15 minutes a day
commuting?
(b) What is the probability of randomly selecting an employee
who spends more than 35 minutes commuting each day?

Old Billie and her son Hadey are arguing about how much time
their fellow goats spend listening to music each day. Old Billie
contends that the goats spend between 0 and 80 minutes each day
listening to music, and she insists that no range of times is ay
more likely than any other. Hadey argues that it doesn't make sense
to believe that goats are just as likely to spend more time than
two hours listening to music as they...

Old Billie and her son Hadey are arguing about how much time
their fellow goats spend listening to music each day. Old Billie
contends that the goats spend between 0 and 80 minutes each day
listening to music, and she insists that no range of times is ay
more likely than any other. Hadey argues that it doesn't make sense
to believe that goats are just as likely to spend more time than
two hours listening to music as they...

Old Billie and her son Hadey are arguing about how much time
their fellow goats spend listening to music each day. Old Billie
contends that the goats spend between 0 and 80 minutes each day
listening to music, and she insists that no range of times is any
more likely than any other. Hadey argues that it doesn’t make sense
to believe that goats are just as likely to spend more than two
hours listening to music as they are...

1)During the period of time that a
local university takes phone-in registrations, calls come in at the
rate of one every two minutes.
a.Clearly state what the random
variable in this problem is?
b.What is an appropriate distribution
to be used for this problem and why?
c.What is the expected number of calls
in one hour?
d.What is the probability of receiving
three calls in five minutes?
e.What is the probability of receiving
NO calls in a 10-minute period?
f.What...

Suppose the average time a visitor spends at an Art Gallery is
35 minutes. Assume the visit lengths are normally distributed with
a standard deviation of 11 minutes. If a visitor is selected at
random, what is the probability that they spend:
(a) less than 20 minutes at the exhibit?
(b) more than 40 minutes at the exhibit?

on average,e U.S. adults spend 136 minutes per day using social
media. Use a normal distribution with a standard deviation of 14.2
minutes to answer: what is the probability that an adult uses
social media between 120 and 140 minutes a day, what is the
probability that an adult uses social media more than 160 minutes
per day, and how many minutes must an adult spend on social media
in a day to be in the top 5% of all...

(a)
The time spent (in minutes) per day on reading newspaper by an
adult can be approximated by a normal distribution with mean 15
minutes and standard deviation 3 minutes.
i.
Find the probability that the reading time per day for a
randomly selected adult is more than 18 minutes.
ii.
What is the shortest time spent in reading newspaper for an
adult per day that would still place him in the top 9%?
iii.
How many adults spent less...

1. According to an article published on the Web site,
Facebook users spend an average of 190 minutes per month checking
and updating their Facebook pages. Suppose that the current
distribution of time spent per month checking and updating a
member’s Facebook page is normally distributed with a mean of 190
minutes and a standard deviation of 53.4 minutes. For a randomly
selected Facebook member, determine the probability that the amount
of time that he or she spends per month...

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