Strength of concrete: The compressive strength, in kilopascals, was measured for concrete blocks from five different batches of concrete, both three and six days after pouring. The data are as follows. Can you conclude that the mean strength after three days differs from the mean strength after six days? Let μ1 represent the mean strength after three days and =μd−μ1μ2 . Use the =α0.10 level and the P -value method with the table. Block 1 2 3 4 5 After 3 days 1356 1337 1344 1310 1348 After 6 days 1352 1355 1355 1324 1380 State the appropriate null and alternate hypotheses. test statistic: Estimate the P-value. Identify the form of the interval based on the Critical Values for the Student's t Distribution Table. Determine whether to reject H0 State the conclusion: There enough evidence to conclude that the mean strength after three days differs from the mean strength after six days.
Strength of concrete: The compressive strength, in kilopascals, was measured for concrete blocks from five different batches of concrete, both three and six days after pouring. The data are as follows. Can you conclude that the mean strength after three days differs from the mean strength after six days? Let μ1 represent the mean strength after three days and =μd−μ1μ2 . Use the =α0.10 level and the P -value method with the table. Block 1 2 3 4 5 After 3 days 1356 1337 1344 1310 1348 After 6 days 1352 1355 1355 1324 1380 State the appropriate null and alternate hypotheses. test statistic: Estimate the P-value. Identify the form of the interval based on the Critical Values for the Student's t Distribution Table. Determine whether to reject H0 State the conclusion: There enough evidence to conclude that the mean strength after three days differs from the mean strength after six days.
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 10CR
Related questions
Question
Strength of concrete: The compressive strength, in kilopascals, was measured for concrete blocks from five different batches of concrete, both three and six days after pouring. The data are as follows. Can you conclude that the mean strength after three days differs from the mean strength after six days? Let
μ1
represent the mean strength after three days and
=μd−μ1μ2
. Use the
=α0.10
level and the
P
-value method with the table.
Block | |||||
1
|
2
|
3
|
4
|
5
|
|
After
3
|
1356
|
1337
|
1344
|
1310
|
1348
|
After
6
|
1352
|
1355
|
1355
|
1324
|
1380
|
State the appropriate null and alternate hypotheses.
test statistic:Estimate the P-value. Identify the form of the interval based on the Critical Values for the Student's t Distribution Table.
Determine whether to reject H0
State the conclusion:
There enough evidence to conclude that the mean strength after three days differs from the mean strength after six days.
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