Records show that students score an average of 850 points on an achievement test. A test prep company believe their students will have different scores. To test this hypothesis, they sample 1000 students and find a sample mean of 856 points. They perform the hypothesis test at a confidence level of 95%. a. State the null and alternative hypothesis mathematically b. What is the significance level? c. If 856 is a significantly significant score after being transformed into a z statistic, where will it lie in the distribution below? In area 1, area 2 or area 3?
Records show that students score an average of 850 points on an achievement test. A test prep company believe their students will have different scores. To test this hypothesis, they sample 1000 students and find a sample mean of 856 points. They perform the hypothesis test at a confidence level of 95%. a. State the null and alternative hypothesis mathematically b. What is the significance level? c. If 856 is a significantly significant score after being transformed into a z statistic, where will it lie in the distribution below? In area 1, area 2 or area 3?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.2: The Law Of Cosines
Problem 11E
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Records show that students score an average of 850 points on an achievement test. A test
prep company believe their students will have different scores. To test this hypothesis, they
sample 1000 students and find a sample mean of 856 points. They perform the hypothesis test
at a confidence level of 95%.
a. State the null and alternative hypothesis mathematically
b. What is the significance level?
prep company believe their students will have different scores. To test this hypothesis, they
sample 1000 students and find a sample mean of 856 points. They perform the hypothesis test
at a confidence level of 95%.
a. State the null and alternative hypothesis mathematically
b. What is the significance level?
c. If 856 is a significantly significant score after being transformed into a z statistic, where will
it lie in the distribution below? In area 1, area 2 or area 3?
it lie in the distribution below? In area 1, area 2 or area 3?
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