Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certain area was 0 15 milligrams per liter (mg/L). A random sample of 10 precipitation dates in 2007 results in the following data table. Complete parts (a) through (c) below E Click the icon to view the data table (a) State the hypotheses for determining if the mean concentration of calcium precipitation has changed since 1990. 0.15 mg/L. v0. 15 mg/L i Data Table (b) Construct a 95% confidence interval about the sample mean concentration of calcium precipitation The lower bound is The upper bound is (Round to four decimal places as needed.) 0.075 0.081 0 067 0.237 0 126 0 171 0. 131 0.224 0.314 0 091 (c) Does the sample evidence suggest that calcium concentrations have changed since 1990? Print Done O A. Yes, because the confidence interval does not contain 0.15 mg/L O B. Yes, because the confidence interval contains 0.15 mg/L Nn haraea the ennfirdanca intanual containe n 15 mal Click to select your answer(s).

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Author:Carter
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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 3CYU
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Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certain area was 0.15 milligrams per liter (mg/L). A random sample of
10 precipitation dates in 2007 results in the following data table. Complete parts (a) through (c) below.
Click the icon to view the data table.
(a) State the hypotheses for determining if the mean concentration of calcium precipitation has changed since 1990.
Но
Ho:
0.15 mg/L
H1:
0.15 mg/L
i Data Table
(b) Construct a 95% confidence interval about the sample mean concentration of calcium precipitation.
The lower bound is
The upper bound is
(Round to four decimal places as needed.)
0.237
0.067
0.224
0.126
0.081
0.131
0.075
0.171
0.314
0.091
(c) Does the sample evidence suggest that calcium concentrations have changed since 1990?
Print
Done
A. Yes, because the confidence interval does not contain 0.15 mg/L.
B. Yes, because the confidence interval contains 0.15 mg/L.
An herauce the confidonce intenval contains0 15 mall
Click to select your answer(s).
3:11
acer
Co
Co
Transcribed Image Text:Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certain area was 0.15 milligrams per liter (mg/L). A random sample of 10 precipitation dates in 2007 results in the following data table. Complete parts (a) through (c) below. Click the icon to view the data table. (a) State the hypotheses for determining if the mean concentration of calcium precipitation has changed since 1990. Но Ho: 0.15 mg/L H1: 0.15 mg/L i Data Table (b) Construct a 95% confidence interval about the sample mean concentration of calcium precipitation. The lower bound is The upper bound is (Round to four decimal places as needed.) 0.237 0.067 0.224 0.126 0.081 0.131 0.075 0.171 0.314 0.091 (c) Does the sample evidence suggest that calcium concentrations have changed since 1990? Print Done A. Yes, because the confidence interval does not contain 0.15 mg/L. B. Yes, because the confidence interval contains 0.15 mg/L. An herauce the confidonce intenval contains0 15 mall Click to select your answer(s). 3:11 acer Co Co
Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certain area was 0.15 milligrams per liter (mg/L). A random sample of
10 precipitation dates in 2007 results in the following data table. Complete parts (a) through (c) below.
Click the icon to view the data table.
VU.15 mg/L
H1:
v0.15 mg/L
(b) Construct a 95% confidence interval about the sample mean concentration of calcium precipitation.
The lower bound is
Data Table
The upper bound is
(Round to four decimal places as needed.)
(c) Does the sample evidence suggest that calcium concentrations have changed since 1990?
0.237
0.075
0.081
0.067
0.126
0.171
0.131
0.224
0.314
0.091
A. Yes, because the confidence interval does not contain 0.15 mg/L.
B. Yes, because the confidence interval contains 0.15 mg/L.
Done
Print
C. No, because the confidence interval contains 0.15 mg/L.
D. No, because the confidence interval does not contain 0.15 mg/L.
Click to select your answer(s).
3:11
acer
backspan
esc
Transcribed Image Text:Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certain area was 0.15 milligrams per liter (mg/L). A random sample of 10 precipitation dates in 2007 results in the following data table. Complete parts (a) through (c) below. Click the icon to view the data table. VU.15 mg/L H1: v0.15 mg/L (b) Construct a 95% confidence interval about the sample mean concentration of calcium precipitation. The lower bound is Data Table The upper bound is (Round to four decimal places as needed.) (c) Does the sample evidence suggest that calcium concentrations have changed since 1990? 0.237 0.075 0.081 0.067 0.126 0.171 0.131 0.224 0.314 0.091 A. Yes, because the confidence interval does not contain 0.15 mg/L. B. Yes, because the confidence interval contains 0.15 mg/L. Done Print C. No, because the confidence interval contains 0.15 mg/L. D. No, because the confidence interval does not contain 0.15 mg/L. Click to select your answer(s). 3:11 acer backspan esc
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