Question

At Burnt Mesa Pueblo, the method of tree-ring dating found at an archaeological excavation site that the mean year of birth (AD) for a tree was 1272 with a sample standard deviation of 37 years in a sample of size 9. Find a 90% confidence interval for the mean of all tree-ring dates from this site. Interpret the confidence interval in the context of the problem and find each of the following.

x-bar |

std dev |

n |

Confidence Level |

Margin of Error |

Point Estimate |

Lower Limit |

Upper Limit |

Please tell me which excel formulas you used. Thank you!

Answer #1

At Burnt Mesa Pueblo, the method of tree-ring dating gave the
following years A.D. for an archaeological excavation site
(Bandelier Archaeological Excavation Project: Summer 1990
Excavations at Burnt Mesa Pueblo). Find a 95% confidence interval
for the mean of all tree-ring dates from this archaeological site.
Give the lower bound
give the upper bound
1189 1271
1267 1272
1268 1316
1275 1317 1275

At Burnt Mesa Pueblo, archaeological studies have used the
method of tree-ring dating in an effort to determine when
prehistoric people lived in the pueblo. Wood from several
excavations gave a mean of (year) 1246 with a standard deviation of
38 years. The distribution of dates was more or less mound-shaped
and symmetrical about the mean. Use the empirical rule to estimate
the following.
(a) a range of years centered about the mean in which about 68%
of the data...

At Burnt Mesa Pueblo, archaeological studies have used the
method of tree-ring dating in an effort to determine when
prehistoric people lived in the pueblo. Wood from several
excavations gave a mean of (year) 1233 with a standard deviation of
36 years. The distribution of dates was more or less mound-shaped
and symmetric about the mean. Use the empirical rule to estimate
the following.
(a) a range of years centered about the mean in which about 68%
of the data...

The
method of tree ring dating gave the follwing years A.D. for an
archaeological excavation site. Assume that the population of x
values has an approximately normal distribution.
1250 1194 1278 1278 1268 1316 1275 1317 1275
(a) Use a calculator with mean and standard deviation keys to
find the sample mean year x and sample standard deviation s.
x=
s=
(b) Find a 90% confidence interval for the mean of all tree
ring dates from this archaeological site
lower...

The method of tree ring dating gave the following years A.D. for
an archaeological excavation site. Assume that the population of
x values has an approximately normal distribution.
1243 1271 1271 1320 1268 1317 1275 1317 1275
(a) Use a calculator with mean and standard deviation keys to
find the sample mean year x and sample standard deviation
s.
(b) Find a 90% confidence interval for the mean of all tree ring
dates from this archaeological site.
Lower limit
Upper...

The method of tree ring dating gave the following years A.D. for
an archaeological excavation site. Assume that the population of x
values has an approximately normal distribution. 1201 1320 1215
1243 1268 1316 1275 1317
(a) Use a calculator with mean and standard deviation keys to
find the sample mean year x(with the bar above it) and sample
standard deviation s. (Round your answers to the nearest whole
number.)
x( with the bar on top) = ____ A.D.
s...

The method of tree ring dating gave the following years A.D. for
an archaeological excavation site. Assume that the population of x
values has an approximately normal distribution.
1250 1299 1306 1278 1268 1316 1275 1317 1275
Find a 90% confidence interval for the mean of all tree ring
dates from this archaeological site. (Round your answers to the
nearest whole number.)
lower limit=
upper limit=

The method of tree ring dating gave the following years A.D. for
an archaeological excavation site. Assume that the population of
x values has an approximately normal distribution.
1278
1243
1278
1306
1268
1316
1275
1317
1275
(a) Use a calculator with mean and standard deviation keys to
find the sample mean year x and sample standard deviation
s. (Round your answers to the nearest whole number.)
x =
S=
(b) Find a 90% confidence interval for the mean of...

. Archaeological Excavation. Suppose the method
of tree ring dating gave the following dates A.D. for an
archaeological excavation site.
1241 1210 1267 1314
1211 1299 1246 1280
1291
Find a 98% confidence interval for the mean of all tree ring
dates from this archaeological site
Statistical Variables:
Confidence Interval Formula:
Critical Value:
Margin of Error:
Conclusion Statements:

The method of tree-ring dating gave the following
years A.D. for an archaeological excavation site. Assume that the
population of x values has an approximately normal
distribution.
1,2781,2501,2991,2921,2681,3161,2751,3171,275
(a)
Use a calculator with mean and standard deviation keys to find the
sample mean year x and sample standard deviation s. (Round
your answers to the nearest whole number.)
x
= A.D.s= yr
(b)
Find a 90% confidence interval for the mean of all tree-ring dates
from this archaeological site. (Round...

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