Question
64% of Americans will carve a pumpkin for Halloween. Suppose a random sample of 200 Americans...
64% of Americans will carve a pumpkin for Halloween. Suppose a random sample of 200 Americans is taken.
a) Describe the sampling distribution of pˆ (give the values for µpˆ and σ pˆ , rounded to 3 decimal places).
b) What is the probability that more than 70% of them carve a pumpkin?
c) What is the probability that fewer than 125 of them carve a pumpkin?
d) Would it be unusual for less than half of them to carve a pumpkin?
Homework Answers
Answer #1
Dear students , please like it.
Thanks.
Not the answer you're looking for?
Similar Questions
Suppose a simple random sample of size n=200 is obtained from a population whose size is...
Suppose a simple random sample of size n=200 is obtained from a
population whose size is N = 20000
and whose population proportion with a specified characteristic
is p equals 0.8.
(a) Describe the sampling distribution of
Determine the mean of the sampling distribution
Determine the standard deviation of the sampling
distribution
(b) What is the probability of obtaining x= 168or more
individuals with the characteristic? That is, what is P(p greater
than or equal to 0.84?
(c) What is...
A random sample of size 64 is taken from a population with mean µ = 17...
A random sample of size 64 is taken from a population with mean
µ = 17 and standard deviation σ = 16. What are the expected value
and the standard deviation for the sampling distribution of the
sample mean?
Suppose that a random sample of size 64 is to be selected from a population with...
Suppose that a random sample of size 64 is to be selected from a
population with mean 40 and standard deviation 5.
(a) What is the mean of the xbar sampling distribution? 40 What
is the standard deviation of the xbar sampling distribution?
.625
(b) What is the approximate probability that xbar will be within
0.5 of the population mean μ ?
(c) What is the approximate probability that xbar will differ
from μ by more than 0.7?
A random sample of size 64 is taken from a population with mean µ = 17...
A random sample of size 64 is taken from a population with mean
µ = 17 and standard deviation σ = 16. What are the expected value
and the standard deviation for the sampling distribution of the
sample mean?
17 and 2, respectively.
17 and 64, respectively.
17 and 16, respectively.
17 and 1, respectively.
A random sample of size 64 is taken from a population with mean µ = 17...
A random sample of size 64 is taken from a population with mean
µ = 17 and standard deviation σ = 16. What are the expected value
and the standard deviation for the sampling distribution of the
sample mean?
17 and 2, respectively.
17 and 64, respectively.
17 and 16, respectively.
17 and 1, respectively.
Let the random variable X follow a normal distribution with μ = 60 and σ^2=64. a....
Let the random variable X follow a normal distribution with μ =
60 and σ^2=64.
a.
Find the probability that X is greater than 70.
b.
Find the probability that X is greater than 45 and less than
74.
c.
Find the probability that X is less than 65.
d.
The probability is 0.2 that X is greater than what
number?
e.
The probability is 0.05 that X is in the symmetric interval
about the mean between which two numbers?
Suppose that a random sample of size 64 is to be selected from a population with...
Suppose that a random sample of size 64 is to be selected from a
population with mean 40 and standard deviation 5.
(a) What is the mean of the xbar sampling distribution? =40
What is the standard deviation of the xbar sampling distribution
(to 3 decimal places)? =0.625
For parts b & c round to 4 decimal places:
(b) What is the probability that xbar will be within 0.5 of the
population mean μ ?
(c) What is the probability...
About 29% of adults do not own a credit card. Suppose a random sample of 200...
About 29% of adults do not own a credit card. Suppose a random
sample of 200 adults is asked, "Do you own a credit card?".
a) describe the sampling distribution of phat of adults who own
a credit card.
b) Find the probability of the sample proportion greater than
0.35.
c) Find the sample proportions with the middle 93.5%.
Suppose that a random sample of size 64 is to be selected from a population with...
Suppose that a random sample of size 64 is to be selected from a
population with mean 40 and standard deviation 5.
(a) What are the mean and standard deviation of the sampling
distribution?
μx =
σx =
(b) What is the approximate probability that x will be
within 0.4 of the population mean μ? (Round your answer to
four decimal places.)
P =
(c) What is the approximate probability that x will differ
from μ by more than 0.8?...
Suppose a simple random sample of size n=200 is obtained from a population whose size is...
Suppose a simple random sample of size n=200 is obtained from a
population whose size is N=10,000 and whose population proportion
with a specified characteristic is p=0.6.
Complete parts (a) through
(c) below.
(a) Describe the sampling distribution of
ModifyingAbove p with caretp.
Determine the mean of the sampling distribution of
ModifyingAbove p with caretp.
mu Subscript ModifyingAbove p with caret equals
μp=___
(Round to one decimal place as needed.)
Determine the standard deviation of the sampling distribution
of
sigma...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 8 minutes ago
asked 8 minutes ago
asked 27 minutes ago
asked 29 minutes ago
asked 33 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