ZuoTi.Pro
Question

part 1. You want to obtain a sample to estimate how much parents spend on their...

part 1.

You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately σ=63.5σ=63.5 dollars. You would like to be 95% confident that your estimate is within 1 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?
n=


part 2.
In a survey, 10 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $46 and standard deviation of $15. Construct a confidence interval at a 99% confidence level.

Give your answers to one decimal place.

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

solution at )| 6= 63:5 dollars margin-cd-errors-E- 1 So on didanse ere tl zis Sample size hs ZG 匕. 2 Sample size zn ISu92Given that egree So 99 % Con 2,dence-interv al 4oru is A VIO 30. 6 6I.

0 0
Add a comment
Know the answer?
Add Answer to:
part 1. You want to obtain a sample to estimate how much parents spend on their...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • You want to obtain a sample to estimate how much parents spend on their kids birthday...

    You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately σ=32.1 dollars. You would like to be 98% confident that your estimate is within 1 dollar(s) of average spending on the birthday parties. How many moms do you have to sample? Do not round mid-calculation. n =

  • You want to obtain a sample to estimate how much parents spend on their kids birthday...

    You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately o = 45.1 dollars. You would like to be 98% confident that your estimate is within 2.5 dollar(s) of average spending on the birthday parties. How many parents do you have to sample? Get help: Video Written Example

  • In a survey, 39 people were asked how much they spent on their child's last birthday...

    In a survey, 39 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $40 and standard deviation of $4. Calculate, state, and interpret a 95% confidence interval to estimate the mean amount of money parents spend on their child's birthday gift. Round to the nearest 100th where necessary.

  • In a survey, 13 people were asked how much they spent on their child's last birthday...

    In a survey, 13 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $39 and standard deviation of $18. Estimate how much a typical parent would spend on their child's birthday gift (use a 95% confidence level). Give your answers to one decimal place. Provide the point estimate and margin or error.

  • In a survey, 25 people were asked how much they spent on their child's last birthday...

    In a survey, 25 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $36 and standard deviation of $16. Estimate how much a typical parent would spend on their child's birthday gift (use a 95% confidence level). Give your answers to one decimal place. Provide the point estimate and margin or error.

  • In a survey, 25 people were asked how much they spent on their child's last birthday...

    In a survey, 25 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $49 and standard deviation of $11. Estimate how much a typical parent would spend on their child's birthday gift (use a 98% confidence level). Give your answers to one decimal place. Provide the point estimate and margin or error.

  • In a survey, 16 people were asked how much they spent on their child's last birthday...

    In a survey, 16 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $38 and standard deviation of $13. Estimate how much a typical parent would spend on their child's birthday gift (use a 99% confidence level). Give your answers to one decimal place. Provide the point estimate and margin or error. ±±

  • In a survey, 22 people were asked how much they spent on their child's last birthday...

    In a survey, 22 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $46 and standard deviation of $12. Estimate how much a typical parent would spend on their child's birthday gift (use a 98% confidence level). Give your answers to one decimal place. Provide the point estimate and margin or error. ±± Do you add ( ) when answering?

  • In a survey, 15 people were asked how much they spent on their child's last birthday gift. The results were roughly bell...

    In a survey, 15 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $42 and standard deviation of $5. Estimate how much a typical parent would spend on their child's birthday gift (use a 90% confidence level).Give your answers to one decimal place. Provide the point estimate and margin or error.Do you add ( ) when answering?

  • In a survey, 21 people were asked how much they spent on their child's last birthday...

    In a survey, 21 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $36.4 and standard deviation of $13.4. Estimate how much a typical parent would spend on their child's birthday gift (use a 80% confidence level). Give your answers to 3 decimal places. Express your answer in the format of x̅ ± E.

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT