Question

Here are summary statistics for randomly selected weights of newborn​ girls: nequals173​, x overbarequals31.6 ​hg, sequals7.6...

Here are summary statistics for randomly selected weights of newborn​ girls: nequals173​, x overbarequals31.6 ​hg, sequals7.6 hg. Construct a confidence interval estimate of the mean. Use a 99​% confidence level. Are these results very different from the confidence interval 29.1 hgless thanmuless than33.7 hg with only 18 sample​ values, x overbarequals31.4 ​hg, and sequals3.4 ​hg?

Homework Answers

Answer #1

Solution :

degrees of freedom = n - 1 = 173 - 1 = 172

t/2,df = t0.005,172 = 2.605

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

= 2.605 * ( 7.6 / 173)

Margin of error = E = 1.5

The 99% confidence interval estimate of the population mean is,

- E < < + E

31.6 - 1.5 < < 31.6 + 1.5

30.1 hg < < 33.1 hg

Yes, because the confidence interval limits are not similar

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Here are summary statistics for randomly selected weights of newborn​ girls: nequals243​, x overbarequals27.3 ​hg, sequals7.7...
Here are summary statistics for randomly selected weights of newborn​ girls: nequals243​, x overbarequals27.3 ​hg, sequals7.7 hg. Construct a confidence interval estimate of the mean. Use a 99​% confidence level. Are these results very different from the confidence interval 25.2 hgless thanmuless than30.2 hg with only 18 sample​ values, x overbarequals27.7 ​hg, and sequals3.6 ​hg?
Here are summary statistics for randomly selected weights of newborn​ girls: nequals165​, x overbarequals29.1 ​hg, sequals7.2...
Here are summary statistics for randomly selected weights of newborn​ girls: nequals165​, x overbarequals29.1 ​hg, sequals7.2 hg. Construct a confidence interval estimate of the mean. Use a 99​% confidence level. Are these results very different from the confidence interval 26.0 hgless thanmuless than31.2 hg with only 12 sample​ values, x overbarequals28.6 ​hg, and sequals2.9 ​hg? What is the confidence interval for the population mean mu​? nothing hgless thanmuless than nothing hg ​(Round to one decimal place as​ needed.)
Here are summary statistics for randomly selected weights of newborn​ girls: nequals185​, x overbarequals32.4 ​hg, sequals6.1...
Here are summary statistics for randomly selected weights of newborn​ girls: nequals185​, x overbarequals32.4 ​hg, sequals6.1 hg. Construct a confidence interval estimate of the mean. Use a 95​% confidence level. Are these results very different from the confidence interval 31.6 hgless thanmuless than33.8 hg with only 15 sample​ values, x overbarequals32.7 ​hg, and sequals1.9 ​hg?
Here are summary statistics for randomly selected weights of newborn​ girls: nequals174​, x overbarequals30.8 ​hg, sequals7.5...
Here are summary statistics for randomly selected weights of newborn​ girls: nequals174​, x overbarequals30.8 ​hg, sequals7.5 hg. Construct a confidence interval estimate of the mean. Use a 95​% confidence level. Are these results very different from the confidence interval 28.5 hgless thanmuless than32.1 hg with only 15 sample​ values, x overbarequals30.3 ​hg, and sequals3.2 ​hg? What is the confidence interval for the population mean mu​? 0 hgless thanmuless than 0 hg ​(Round to one decimal place as​ needed.) Are the...
Here are summary statistics for randomly selected weights of newborn​ girls: n=159​, x=32.1 ​hg, s=6.8hg. Construct...
Here are summary statistics for randomly selected weights of newborn​ girls: n=159​, x=32.1 ​hg, s=6.8hg. Construct a confidence interval estimate of the mean. Use a 99​% confidence level. Are these results very different from the confidence interval 30.8 hg <μ<34.4 hg with only 18 sample​ values, x=32.6hg, and s=2.6hg?
Here are summary statistics for randomly selected weights of newborn​ girls: n = 160​, x =...
Here are summary statistics for randomly selected weights of newborn​ girls: n = 160​, x = 30.7 ​hg, s = 6.6 hg. Construct a confidence interval estimate of the mean. Use a 99​% confidence level. Are these results very different from the confidence interval 29.4 hg < u < 32.4 hg with only 17 sample​ values, x = 30.9 ​hg, and s = 2.1 ​hg?
Here are summary statistics for randomly selected weights of newborn​ girls: n=239, x=33.2hg, s=6.6 hg. Construct...
Here are summary statistics for randomly selected weights of newborn​ girls: n=239, x=33.2hg, s=6.6 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 31.3hg <μ<34.5 hg with only 15 sample​ values, x=32.9 hg, and s=2.1 hg?
Here are summary statistics for randomly selected weights of newborn​ girls: n=244, x=31.8 hg, s=7.3hg. Construct...
Here are summary statistics for randomly selected weights of newborn​ girls: n=244, x=31.8 hg, s=7.3hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 29.8 hg < mean < 34.0 hg with only 16 sample values, x= 31.9 hg, and s= 2.9 hg? What is the confidence interval for the population mean ?
Here are summary statistics for randomly selected weights of newborn​ girls: n=212​, x bar=31.5 hg, s=7.5...
Here are summary statistics for randomly selected weights of newborn​ girls: n=212​, x bar=31.5 hg, s=7.5 hg. Construct a confidence interval estimate of the mean. Use a 99​% confidence level. Are these results very different from the confidence interval 29.5 hg <μ<34.134.1 hg with only 16 sample​ values, x bar=31.8 hg, and s=3.1 hg? hg <μ< HG
Here are summary statistics for randomly selected weights of newborn​ girls: n=165​, x=32.9 ​hg, s=7.2 hg....
Here are summary statistics for randomly selected weights of newborn​ girls: n=165​, x=32.9 ​hg, s=7.2 hg. Construct a confidence interval estimate of the mean. Use a 90​% confidence level. Are these results very different from the confidence interval 31.1 hg< μ < 33.5 hg with only 16 sample​ values, x=32.3 ​hg, and s=2.8 ​hg?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT