A political candidate has asked you to conduct a poll to determine what percentage ofpeople support him. If the candidate only wants a 10% margin of error at a 90%confidence level, what size of sample is needed?Hint: Video [] You measure 47 dogs' weights, and find they have a mean weight of 79 ounces.Assume the population standard deviation is 10.5 ounces. Based on this, what is themaximal margin of error associated with a 90% confidence interval for the truepopulation mean dog weight.Give your answer as a decimal, to two placesounces

Question
Asked Nov 12, 2019
23 views

I need help finding the answer on the TI84 Plus CE and on paper ?. Thank you

A political candidate has asked you to conduct a poll to determine what percentage of
people support him. If the candidate only wants a 10% margin of error at a 90%
confidence level, what size of sample is needed?
Hint: Video []
help_outline

Image Transcriptionclose

A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 10% margin of error at a 90% confidence level, what size of sample is needed? Hint: Video []

fullscreen
You measure 47 dogs' weights, and find they have a mean weight of 79 ounces.
Assume the population standard deviation is 10.5 ounces. Based on this, what is the
maximal margin of error associated with a 90% confidence interval for the true
population mean dog weight.
Give your answer as a decimal, to two places
ounces
help_outline

Image Transcriptionclose

You measure 47 dogs' weights, and find they have a mean weight of 79 ounces. Assume the population standard deviation is 10.5 ounces. Based on this, what is the maximal margin of error associated with a 90% confidence interval for the true population mean dog weight. Give your answer as a decimal, to two places ounces

fullscreen
check_circle

Expert Answer

Step 1

Note:

Hey there! Thank you for the question. As you have posted two different questions together, according to our policy, we have solved the first one for you. If you need help with the other question, please re-post it.

Step 2

Introduction:

The 100 (1 – α) % confidence interval for the population proportion, π is: (p – (/2­) (π (1 – π)/n), p + (/2­) (π (1 – π)/n)).

Here, n is the sample size, p is the sample proportion, and /2 is the critical value of the z-distribution, above which,...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Other

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: Find the indicated value: z0.005

A: Given, Z0.005That means Z∝ = Z0.005

question_answer

Q: 15L

A: According to the provided question, suppose 3 block towers are made which is 3 block tall, 6 block t...

question_answer

Q: I have attached a picture of the question. Please only answer section A, B, and C.

A: Parts a and b:Part a:Denote μ as the true mean score after the new study skills program. The nationa...

question_answer

Q: Use the spinner below to find the probability of getting the following number after 1 spin.P(multipl...

A: According to the given figure, there are 12 numbers available, from 1 to 12.Thus,The multiples of 4 ...

question_answer

Q: The age of children in kindergarten on the first day of school is uniformly distributed between 4.8 ...

A: Solution: We are given:The age of children in kindergarten on the first day of school is uniformly d...

question_answer

Q: Is it correct to say that in the long run, if you computed many, many confidence intervals using the...

A: The 99% confidence level gives the long-run of confidence intervals. That is, the large number of sa...

question_answer

Q: can affect a problem 's optimal solution. How can a change in resource availability affect a solutio...

A: Let us define, X1: The number of air conditioners scheduled to be produced.X2: The number of fans sc...

question_answer

Q: 8.52 A B

A: The formula for the sample size is as follows:

question_answer

Q: A telephone company claims that private customers pay on average $17.10 per month for long-distance ...

A: The provided sample mean is  = 22.10 and the Sample standard deviation is s = 6.71, and the sample s...