A) Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the...
A) Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed.
c = 0.99, x equals = 12.4, s = 4.0, n =7
( ? , ? )
(Round to one decimal place as needed.)
B)
| The state test scores for 12 randomly selected high school
seniors are shown on the right. Complete parts (a) through (c)
below.
Assume the population is normally distributed. |
| 1424 | 1224 | 980 |
| 697 | 730 | 834 |
| 723 | 745 | 550 |
| 623 | 1440 | 942 |
B1) Find the sample mean.
x = ?
(Round to one decimal place as needed.)
B2) Find the sample standard deviation.
s = ?
(Round to one decimal place as needed.)
B3) Construct a 99% confidence interval for the population mean μ.
A 99% confidence interval for the population mean is
( ? , ? )
(Round to one decimal place as needed.)
Homework Answers
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A) Construct the indicated confidence interval
for the population mean μ using the t-distribution. Assume the...
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
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Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed c-0.98, x-12.4, s 0.91, n 13 Round to one decimal place as needed.)
Construct the indicated confidence interval for the population mean μ using the t distribution. Assume the...
Construct the indicated confidence interval for the population mean μ using the t distribution. Assume the population is normally distributed c:0.98, x=13.1, s:0 82, n; 13 Round to one decimal place as needed)
Construct the indicated confidence interval for the population mean muμ using the t-distribution. Assume the population...
Construct the indicated confidence interval for the population mean muμ using the t-distribution. Assume the population is normally distributed. cequals=0.990.99, x overbarxequals=12.412.4, sequals=2.02.0, nequals=88 The 99% confidence interval using a t-distribution is left parenthesis nothing comma nothing right parenthesis .,. (Round to one decimal place as needed.)
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X6.2.9-TConstruct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed c = 0.90, x̅ = 12.9, s = 4.0, n = 9 The 90% confidence interval using a t-distribution is 6.2.17-T In a random sample of 26 people, the mean commute time to work was 34.8 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 98% confidence interval for the population mean μ...
Construct the indicated confidence interval for the population mean muμ using the t-distribution. Assume the population...
Construct the indicated confidence interval for the population mean muμ using the t-distribution. Assume the population is normally distributed. cequals=0.99 x overbarxequals=13.6, sequals=0.56 nequals=15 Round to one decimal place as needed
Answers only is okay! Construct the indicated confidence interval for the population mean μ using the...
Answers only is okay! 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=3.0, n= 6 Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.95, x=14.5, s=0.55, n= 15 Use the given confidence interval to find the margin of error and the sample mean. (12.7,19.9The sample mean is In a random sample of 18 people, the mean...
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0 The state test scores for 12 randomly selected high school seniors are shown on the...
0 The state test scores for 12 randomly selected high school seniors are shown on the right Complete parts (a) through (c) below. Assume the population is normally distributed 1420 697 721 622 1225 722 745 1445 984 834 542 943 (a) Find the sample mean. (Round to one decimal place as needed.) (b) Find the sample standard deviation. (Round to one decimal place as needed.) (c) Construct a 99% confidence interval for the population mean . A 99% confidence...
Construct the indicated confidence interval for the population mean mu μ using the t-distribution. Assume the...
Construct the indicated confidence interval for the population mean mu μ using the t-distribution. Assume the population is normally distributed. c equals = 0.90 0.90, x overbar x equals = 14.1 14.1, s equals = 4.0 4.0, n equals = 6 6 The 90 90% confidence interval using a t-distribution is left parenthesis nothing comma nothing right parenthesis . , .
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0 The state test scores for 12 randomly selected high school seniors are shown on the right Complete parts (a) through (c) below. Assume the population is normally distributed 1420 697 721 622 1225 722 745 1445 984 834 542 943 (a) Find the sample mean. (Round to one decimal place as needed.) (b) Find the sample standard deviation. (Round to one decimal place as needed.) (c) Construct a 99% confidence interval for the population mean . A 99% confidence...
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