Question

In: Statistics and Probability

construct an 80% confidence interval to estimate the population mean when x= 52 and s=14.8 for...

construct an 80% confidence interval to estimate the population mean when x= 52 and s=14.8 for the sample sizes below

a) n=15

b) n=45

c) n=55

Expert Solution

a )

52 1.345 ( 14.8 15 )

52 5.1398

( 46.86 , 57.14 )

At 80 %, CI for Mean is ( 46.86 , 57.14 )

------------------------------------------------------------------------------------------------

b )

52 1.301 ( 14.8 45 )

52 2.8705

( 49.13 , 54.87 )

At 80 %, CI for Mean is ( 49.13 , 54.87 )

----------------------------------------------------------------------------------------------------

c)

52 1.297 ( 14.8 55 )

52 2.589

( 49.41 , 54.59 )

At 80 %, CI for Mean is ( 49.41 , 54.59 )

orchestra answered 2 years ago

Construct an 80% confidence interval to estimate the population mean when x overbar=131 and s =...

Construct an 80% confidence interval to estimate the population mean when x overbar=131 and s = 28 for the sample sizes below. a) n=20 b) n=50 c) n=80

1. Construct an 80% confidence interval to estimate the population mean when x overbarx=128 and s...

1. Construct an 80% confidence interval to estimate the population mean when x overbarx=128 and s =27 for the sample sizes below. a)n=20 b)n=50 c)n=90 a) The 80% confidence interval for the population mean when n=20 is from a lower limit of ____ to an upper limit of _____. (Round to two decimal places as needed.) _______________________________________________________________________ 2. Determine the margin of error for a confidence interval to estimate the population mean with n=25 and s-12.5 for the following confidence...

Construct a 98% confidence interval to estimate the population mean when x overbar125 and s =...

Construct a 98% confidence interval to estimate the population mean when x overbar125 and s = 27 for the sample sizes below. a) n=20 b) n=50 c) n=80 a) The 98% confidence interval for the population mean when nequals20 is from a lower limit of _ to an upper limit of _.

Construct a 90% confidence interval to estimate the population mean when x=51 and s=12.4 for the...

Construct a 90% confidence interval to estimate the population mean when x=51 and s=12.4 for the sample sizes below. a) n=16 b) n=43 c) n=61 a) The 90% confidence interval for the population mean when n=16 is from a lower limit of to an upper limit of . b) The 90% confidence interval for the population mean when n=43 is from a lower limit of to an upper limit of. (Round to two decimal places as needed.) c)...

Construct a 98% confidence interval to estimate the population mean when x=65 and s=14.7 for the...

Construct a 98% confidence interval to estimate the population mean when x=65 and s=14.7 for the sample sizes below. a) n=19 b) n=43 c) n=58 a) The 98% confidence interval for the population mean when n=19 is from a lower limit of to an upper limit of . (Round to two decimal places as needed.) b) The 98% confidence interval for the population mean when n=43 is from a lower limit of to an upper limit of....

Construct a 95% confidence interval to estimate the population mean when x bar =124 and s...

Construct a 95% confidence interval to estimate the population mean when x bar =124 and s =29 for the sample sizes below. a) n=40 b) n=50 c) n=90 round to 2 decimale places as needed

Construct a 98% confidence interval to estimate the population mean with x =59 and s=13 for...

Construct a 98% confidence interval to estimate the population mean with x =59 and s=13 for the following sample sizes. a) n = 33 b) n = 42 c) n = 60 a) With 98% confidence, when n=33, the population mean is between the lower limit of ? and the upper limit of ?. (Round to two decimal places as needed.)

Construct a 95% confidence interval to estimate the population mean when Mean=125 and s = 26...

Construct a 95% confidence interval to estimate the population mean when Mean=125 and s = 26 for the sample sizes below. a)N=40 b)N=70 c) N=100 A.)The 95% confidence interval for the population mean when N=40is from a lower limit of_____to an upper limit of ______. B.) The 95% confidence interval for the population mean when N=70is from a lower limit of _____to an upper limit of ______. C.) The 95% confidence interval for the population mean when N=100is from a...

1. Construct a 95% confidence interval to estimate the population mean when x(bar) = 54 and...

1. Construct a 95% confidence interval to estimate the population mean when x(bar) = 54 and s= 13.1 for the sample size below. (a) n= 20, ( b) n= 40, (c) n= 57 The 95% confidence interval for the population mean when n equals= 20 is from a lower limit of __ to an upper limit of _____ (Round to two decimal places as needed.) 2. Construct a 95% confidence interval to estimate the population mean using the data below. x...

Construct a 90% confidence interval to estimate the population mean using the data below. x=19 s=4.2...

Construct a 90% confidence interval to estimate the population mean using the data below. x=19 s=4.2 n=14