The cost of rental for a two-bedroom apartment in a particular suburb is normally distributed with a mean of $2600 per month and a standard deviation of $450.
What is the probability that a randomly selected two-bedroom apartment in this suburb will cost less than $2300 per month?
X=2300
U=2600
Standard Deviation 450
2300-2600/450 = -0.67 on Z table is 0.2514 the probability that the random selected 2 bedroom apartment will cost les than $2300
per month is 0.2514%.
If monthly rents for a random sample of 9 apartments in this suburb is selected, what is the probability that the
mean rent for this sample is greater than $2400?
X=2400
U=2600
Q= 450 2400-2600/450= -0.44 on Z table is 0.3300%
the probability that mean rent of 9 apartment in a selected suburb will cost greater than $2400 is 0.3300..
An appropriate, well labelled diagram
must be included for each part.
Only 5% of apartments will cost more than $
x per month. Find x. i cannot figured tjis one out plus need correction if am right..
A local radio station wants to survey the population in their listening area on a particular issue. They ask people to call in and give their opinion regarding the issue.
From these calls the radio station draws a conclusion stating that the population in their listening area has this belief.
Explain the pitfalls in this type of sampling.
It a biased sample.
second it going to be one side based on the response from people.
Not accurate the response on the issue might not include the entire population.
sample error.
What is the probability that a randomly selected two-bedroom apartment in this suburb will cost less than $2300 per month?
X=2300
U=2600
Standard Deviation 450
2300-2600/450 = -0.67 on Z table is 0.2514 the probability that the random selected 2 bedroom apartment will cost les than $2300
per month is 0.2514%.
If monthly rents for a random sample of 9 apartments in this suburb is selected, what is the probability that the
mean rent for this sample is greater than $2400?
X=2400
U=2600
Q= 450 2400-2600/450= -0.44 on Z table is 0.3300%
the probability that mean rent of 9 apartment in a selected suburb will cost greater than $2400 is 0.3300..
An appropriate, well labelled diagram
must be included for each part.
Only 5% of apartments will cost more than $
x per month. Find x. i cannot figured tjis one out plus need correction if am right..
A local radio station wants to survey the population in their listening area on a particular issue. They ask people to call in and give their opinion regarding the issue.
From these calls the radio station draws a conclusion stating that the population in their listening area has this belief.
Explain the pitfalls in this type of sampling.
It a biased sample.
second it going to be one side based on the response from people.
Not accurate the response on the issue might not include the entire population.
sample error.
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