Here are summary statistics for randomly selected weights of newborn girls: nequals211, x overbarequals26.8 hg, sequals6.2 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 24.9 hgless thanmuless than27.9 hg with only 15 sample values, x overbarequals26.4 hg, and sequals1.9 hg? What is the confidence interval for the population mean mu? nothing hgless thanmuless than nothing hg (Round to one decimal place as needed.) Are the results between the two confidence intervals very different? A. Yes, because one confidence interval does not contain the mean of the other confidence interval. B. No, because the confidence interval limits are similar. C. Yes, because the confidence interval limits are not similar. D. No, because each confidence interval contains the mean of the other confidence interval.
Given that,
Point estimate = sample mean = = 26.8 hg
sample standard deviation = s = 6.2 hg
sample size = n = 211
Degrees of freedom = df = n - 1 = 211 - 1 = 210
At 99% confidence level
= 1 - 99%
=1 - 0.99 =0.01
/2
= 0.005
t/2,df
= t0.005, 210 = 2.599
Margin of error = E = t/2,df * (s /n)
= 2.599 * (6.2 / 211)
Margin of error = E = 1.1
The 99% confidence interval estimate of the population mean is,
- E < < + E
26.8 - 1.1 < < 26.8 + 1.1
(25.7 hg < < 27.9 hg)
B) Yes, because the confidence interval limits are not similar
Here are summary statistics for randomly selected weights of newborn girls: nequals211, x overbarequals26.8 hg, sequals6.2...
Here are summary statistics for randomly selected weights of newborn girls: n=191, x-equals32.7 hg, s=6.9 hg. Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 30.6 hgless thanmuless than34.4 hg with only 13 sample values, x =32.5 hg, and s=2.5 hg? What is the confidence interval for the population mean mu? ____<mu< _____hg (Round to one decimal place as needed.) Are the results between the two confidence...
Here are summary statistics for randomly selected weights of newborn girls: nequals=170 x overbarxequals=29.6 hg, sequals=7.1 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 27.6 hgless than<muμless than<31.2 hg with only 19 sample values, x overbarxequals=29.4 hg, and sequals=2.7 hg? What is the confidence interval for the population mean muμ? hgless than<muμless than< hg (Round to one decimal place as needed.) Are the results between...
Here are summary statistics for randomly selected weights of newborn? girls: nequals244?, x overbarequals31.8 ?hg, sequals7.3 hg. Construct a confidence interval estimate of the mean. Use a 99?% confidence level. Are these results very different from the confidence interval 29.3 hgless thanmuless than34.1 hg with only 15 sample? values, x overbarequals31.7 ?hg, and sequals3.1 ?hg? What is the confidence interval for the population mean mu??
Here are summary statistics for randomly selected weights of newborn girls: n=229, x = 33.2 hg, s = 7.3 hg. Construct a confidence interval estimate of the mean. Use a 90% confidence level. Are these results very different from the confidence interval 31.9 hg< <34.7 hg with only 14 sample values, x= 33.3 hg, and s = 2.9 hg? What is the confidence interval for the population mean u? ng<u< ng (Round to one decimal place as needed.) Are the...
Here are summary statistics for randomly selected weights of newborn girls: n = 163, x = 28.6 hg, S=6.9 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 27.6 hg < <30.0 hg with only 20 sample values, x = 28.8 hg, and s = 2.5 hg? What is the confidence interval for the population mean u? ng <u< hg (Round to one decimal place as...
Here are summary statistics for randomly selected weights of newborn girls: n=238, x= 30.7 hg, s=7.8 hg. Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 28.6 hg<<33.2 hg with only 17 sample values, x= 30.9 hg, and s= 3.6 hg? What is the confidence interval for the population mean u? ng<u<ng (Round to one decimal place as needed.) Are the results between the two confidence intervals...
Here are summary statistics for randomly selected weights of newborn girls: n = 155, x= 327 hg, s-6 8 hg Construct a confidence interval estimate of the mean Use a 95% confidence level. Are these results very different from the confidence interval 32.0 hg H34.2 hg with only 20 sample values, x 33.1 hg, and s 2.3 hg? What is the confidence interval for the population mean μ ? __hg < μ< __ hg (Round to one decimal place as needed.) Are the...
o Here are summary statistics for randomly selected weights of newborn girls: n=162. X = 33.5 hg, s= 7.6 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 32.3 hg < <35.3 hg with only 20 sample values, * = 33.8 hg, and s=3.2 hg? What is the confidence interval for the population mean u? ng <<ng (Round to one decimal place as needed.) Are the...
Here are summary statistics for randomly selected weights of newborn girls: nequals=193, x overbarxequals=30.5 hg, sequals=7.3 hg. Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 27.9 hgless than<muμless than<32.3 hg with only 14 sample values, x overbarxequals=30.1 hg, and sequals=13.1 hg? What is the confidence interval for the population mean muμ? nothing hgless than<muμless than<nothing hg (Round to one decimal place as needed.)
Here are summary statistics for randomly selected weights of newborn girls: n=238, x=26.6 hg, s=6.5 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 25.1 hg< mu <28.3 hg with only 17 sample values, x = 26.7 hg, and s=2.2 hg?