2. A random sample of 83 reconstructed clay vessels from the Turquoise Ridge archaeologica indicated the standard deviation of diameters to be approximately 5.5cm. How many (total) a many more clay vessels must be found and reconstructed to be 95% sure that the sample mea diameters is within 1cm of the population mean of all such reconstructed clay vessels? n = _ total, n = more

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2. A random sample of 83 reconstructed clay vessels from the Turquoise Ridge archaeological site
indicated the standard deviation of diameters to be approximately 5.5cm. How many (total) and how
many more clay vessels must be found and reconstructed to be 95% sure that the sample mean of
diameters is within 1cm of the population mean of all such reconstructed clay vessels?
n =
total, n =
more
E =1 (s/Vn)
-/(xcx-x'/(n-1)
(u/x3) = *
7.2: #3-4
3. Consumer Reports gave the following information about the life of size AA batteries in toys.
2.3
5.1
5.4
a. Find the mean and standard
4.2
5.3
6.1
5.7
5.5
1.3
1.8
1.5
2.5
1.6
1.8
1.9
5.2
deviation.
b. Find a 95% confidence interval for the mean life hours for all brand-name AA batteries used in toys.
C =
d.f. =
,te =
E =
interval:
to
4. How much do wild mountain lions weigh? Six adult wild mountain lions captured and released for the
first time in the San Andres Mountains had a mean weight of 91 lbs with a standard deviation of 30.7 lbs.
'nterval for the population average weight of all adult mountain lions in the
com/u/0/h
Transcribed Image Text:2. A random sample of 83 reconstructed clay vessels from the Turquoise Ridge archaeological site indicated the standard deviation of diameters to be approximately 5.5cm. How many (total) and how many more clay vessels must be found and reconstructed to be 95% sure that the sample mean of diameters is within 1cm of the population mean of all such reconstructed clay vessels? n = total, n = more E =1 (s/Vn) -/(xcx-x'/(n-1) (u/x3) = * 7.2: #3-4 3. Consumer Reports gave the following information about the life of size AA batteries in toys. 2.3 5.1 5.4 a. Find the mean and standard 4.2 5.3 6.1 5.7 5.5 1.3 1.8 1.5 2.5 1.6 1.8 1.9 5.2 deviation. b. Find a 95% confidence interval for the mean life hours for all brand-name AA batteries used in toys. C = d.f. = ,te = E = interval: to 4. How much do wild mountain lions weigh? Six adult wild mountain lions captured and released for the first time in the San Andres Mountains had a mean weight of 91 lbs with a standard deviation of 30.7 lbs. 'nterval for the population average weight of all adult mountain lions in the com/u/0/h
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