Question

In a survey, 31 people were asked how much they spent on their child's last birthday...

In a survey, 31 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $44.8 and standard deviation of $16.7. Estimate how much a typical parent would spend on their child's birthday gift (use a 90% confidence level). Give your answers to 3 decimal places.

Express your answer in the format of ¯xx¯ ±±  E.
? $ ±± $ ?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Solution :

t /2,df = 1.697

Margin of error = E = t/2,df * (s /n)

= 1.697 * (16.7 / 31)

Margin of error = E = 5.090

The 90% confidence interval estimate of the population mean is,

E = 44.8 5.090

0 0
Know the answer?
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
Similar Questions
In a survey, 11 people were asked how much they spent on their child's last birthday...
In a survey, 11 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $40.4 and standard deviation of $20.1. Estimate how much a typical parent would spend on their child's birthday gift (use a 90% confidence level). Give your answers to 3 decimal places. Express your answer in the format of ¯xx¯ ±±  E. answer $___ ±± $____ answer
In a survey, 32 people were asked how much they spent on their child's last birthday...
In a survey, 32 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $42.6 and standard deviation of $11.8. 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 x +_ $___ +_ $_____
In a survey, 11 people were asked how much they spent on their child's last birthday...
In a survey, 11 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $38.2 and standard deviation of $16.4. Estimate how much a typical parent would spend on their child's birthday gift (use a 98% confidence level). Give your answers to 3 decimal places. Express your answer in the format of ¯ x ± E.
In a survey, 491 people were asked how much they spent on their child's last birthday...
In a survey, 491 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $39.84 and standard deviation of $9.06. Estimate how much a typical parent would spend on their child's birthday gift (use a z-interval at a 80% confidence level). Give your answers to 2 decimal places. Express your answer in the format of x ± E.
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 $46 and standard deviation of $6. 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. ±±
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 $36.2 and standard deviation of $17.2. Estimate how much a typical parent would spend on their child's birthday gift (use a 95% confidence level). Give your answers to 3 decimal places.
In a survey, 29 people were asked how much they spent on their child's last birthday...
In a survey, 29 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $31 and standard deviation of $14. 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, 10 people were asked how much they spent on their child's last birthday...
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 $38.8 and standard deviation of $13.7. Construct a confidence interval at a 90% confidence level. Express your answer in the format of ¯x ± Error.
STATISTICS In a survey, 10 people were asked how much they spent on their child's last...
STATISTICS 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 $31.2 and standard deviation of $14.7. Estimate how much a typical parent would spend on their child's birthday gift (use a 98% confidence level). Give your answers to 3 decimal places.
In a survey, 18 people were asked how much they spent on their child's last birthday...
In a survey, 18 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $48.8 and standard deviation of $19.5. Construct a confidence interval at a 98% confidence level. Express your answer in the format of ¯x ± Error. $ ± $
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT