Question
In: Statistics and Probability
Find the indicated confidence interval. Assume the standard error comes from a bootstrap distribution that is...
Find the indicated confidence interval. Assume the standard
error comes from a bootstrap distribution that is approximately
normally distributed.
a) A 99% confidence interval for a proportion p if the sample has n=400 with p^=0.80, and the standard error is SE=0.02.
b) A 95% confidence interval for a difference in proportions p1-p2 if the samples have n1=50 with p^1=0.67 and n2=90 with p^2=0.57, and the standard error is SE=0.08.
c) A 95% confidence interval for a difference in means μ1-μ2 if the samples have n1=80 with x¯1=248 and s1=53and n2=120 with x¯2=227 and s2=44, and the standard error is SE=7.16.
Solutions
orchestra answered 2 years agoRelated Solutions
Find the indicated confidence interval. Assume the standard error comes from a bootstrap distribution that is...
Find the indicated confidence interval. Assume the standard
error comes from a bootstrap distribution that is approximately
normally distributed.
A 90% confidence interval for a mean μ if the sample has n=100 with
x¯=22.1 and s=5.6, and the standard error is SE=0.56.
Round your answers to three decimal places.
The 90% confidence interval is Enter your answer; The 90%
confidence interval, value 1 to Enter your answer; The 90%
confidence interval, value 2 .
construct the indicated confidence interval for the population mean using the t distribution. Assume the population...
construct the indicated confidence interval for the population
mean using the t distribution. Assume the population js normally
distributed. c=0.99, x=12.1,s=0.76,n=17
The 99% confidence interval for a population proportion is [0.645, 0.737]. Find the standard error involved...
The 99% confidence interval for a population proportion is
[0.645, 0.737]. Find the standard error involved in this confidence
interval. (Z_{a/2}Za/2 = 2.58). Please show how you
arrive at your answer so I can understand how to calculate this. If
you know the excel commands, that would be helpful as well.
15. Construct the indicated confidence interval for the population mean mu using the t-distribution. Assume the...
15. Construct the indicated confidence interval for the
population mean mu using the t-distribution. Assume the population
is normally distributed. cequals0.98, x overbarequals13.8,
sequals0.74, nequals19 left parenthesis nothing comma nothing
right parenthesis (Round to one decimal place as needed.)
15. Construct the indicated confidence interval for the population mean mu using the t-distribution. Assume the...
15. Construct the indicated confidence interval for the
population mean mu using the t-distribution. Assume the population
is normally distributed. cequals0.98, x overbarequals13.8,
sequals0.74, nequals19 left parenthesis nothing comma nothing
right parenthesis (Round to one decimal place as needed.)
Construct the indicated confidence interval for the population mean mu using the t-distribution. Assume the population...
Construct the indicated confidence interval for the population
mean mu using the t-distribution. Assume the population is
normally distributed.
c=0.99, x bar=12.2, s=3.0, n=9
(?, ?)
Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population...
Construct the indicated confidence interval for the population
mean μ using the t-distribution. Assume the population is normally
distributed.c=0.99, x=13.1, s=0.52, n=15
(Round to one decimal place as needed.)
Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population...
Construct the indicated confidence interval for the population
mean μ using the t-distribution. Assume the population is normally
distributed.c=0.99, x=13.1, s=0.52, n=15
(Round to one decimal place as needed.)
Construct the indicated confidence interval for the population mean mu using the t-distribution. Assume the population...
Construct the indicated confidence interval for the population
mean mu using the t-distribution. Assume the population is
normally distributed. c=0.95, x=13.4, s=0.64, n=19
Construct the indicated confidence interval for the population mean mu using the t-distribution. Assume the population...
Construct the indicated confidence interval for the population
mean mu using the t-distribution. Assume the population is
normally distributed. c=0.90, x=14.7, s=2.0, n=9
The 90% confidence interval using a t-distribution is ?
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