Determine the critical t-scores for each of the following conditions: . One-tail test,a-0.05, n 21 Two-tail test, a 0.02, n 10. Two-tail test, α = 0.05, n = 28 . Two-tail test, α 0.01, n 40 . a. b. c, d. Suppose the average size of a new house built in a certain county in 2010 was 2,272 square feet. A random sample of 25 new homes built in this county was selected in 2014. The average square footage was 2.190 with a standard deviation of 225 square feet. Using home in the county has changed since 2010? Estimate the p- value for this test. a 0.02, does this sample provide enough evidence to conclude that the average house size of a new a. b. Consumers with credit scores below 600 have a very difficult time getting approved for car or mortgage loans. In 2012, 24% of Americans had a credit score below 600, Due to the recent financial crisis, the federal government is concerned that this proportion has increased. To test this hypothesis, a random sample of 250 Americans was chosen in 2014. From this sample, 67 people had credit scores less than 600. using α-0.10, answer the following questions: Does the sample provide support for the government's concern that the proportion of Americans with credit scores below 600 has increased since 2012? Determine the p- value for the test. a. b.
Determine the critical t-scores for each of the following conditions: . One-tail test,a-0.05, n 21 Two-tail test, a 0.02, n 10. Two-tail test, α = 0.05, n = 28 . Two-tail test, α 0.01, n 40 . a. b. c, d. Suppose the average size of a new house built in a certain county in 2010 was 2,272 square feet. A random sample of 25 new homes built in this county was selected in 2014. The average square footage was 2.190 with a standard deviation of 225 square feet. Using home in the county has changed since 2010? Estimate the p- value for this test. a 0.02, does this sample provide enough evidence to conclude that the average house size of a new a. b. Consumers with credit scores below 600 have a very difficult time getting approved for car or mortgage loans. In 2012, 24% of Americans had a credit score below 600, Due to the recent financial crisis, the federal government is concerned that this proportion has increased. To test this hypothesis, a random sample of 250 Americans was chosen in 2014. From this sample, 67 people had credit scores less than 600. using α-0.10, answer the following questions: Does the sample provide support for the government's concern that the proportion of Americans with credit scores below 600 has increased since 2012? Determine the p- value for the test. a. b.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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Transcribed Image Text:Determine the critical t-scores for each of the following conditions:
.
One-tail test,a-0.05, n 21
Two-tail test, a 0.02, n 10.
Two-tail test, α = 0.05, n = 28 .
Two-tail test, α 0.01, n 40 .
a.
b.
c,
d.
Suppose the average size of a new house built in a certain county in 2010 was 2,272 square feet. A random
sample of 25 new homes built in this county was selected in 2014. The average square footage was 2.190 with a
standard deviation of 225 square feet.
Using
home in the county has changed since 2010?
Estimate the p- value for this test.
a 0.02, does this sample provide enough evidence to conclude that the average house size of a new
a.
b.
Consumers with credit scores below 600 have a very difficult time getting approved for car or mortgage loans. In
2012, 24% of Americans had a credit score below 600, Due to the recent financial crisis, the federal government
is concerned that this proportion has increased. To test this hypothesis, a random sample of 250 Americans was
chosen in 2014. From this sample, 67 people had credit scores less than 600. using α-0.10, answer the
following questions:
Does the sample provide support for the government's concern that the proportion of Americans with credit
scores below 600 has increased since 2012?
Determine the p- value for the test.
a.
b.
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