Question

University officials hope that changes they have made have improved the retention rate. Last year, a sample of 19681968 freshmen showed that 16491649 returned as sophomores. This year, 16741674 of 19381938 freshmen sampled returned as sophomores. Determine if there is sufficient evidence at the 0.050.05 level to say that the retention rate has improved. Let last year's freshmen be Population 1 and let this year's freshmen be Population 2. Step 2 of 3 : Compute the value of the test statistic. Round your answer to two decimal places

          University officials hope that changes they have made have
improved the retention rate. Last year, a sample
of 19681968 freshmen showed
that 16491649 returned as sophomores. This
year, 16741674 of 19381938 freshmen sampled
returned as sophomores. Determine if there is sufficient evidence
at the 0.050.05 level to say that the retention rate has
improved. Let last year's freshmen be Population 1 and let this
year's freshmen be Population 2.
Step 2 of 3 :  
Compute the value of the test statistic. Round your answer to
two decimal places

Show more…

Added by Alfonso T.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert T. L.

04/08/2023

Step 1

First, we need to find the proportions for each population: Population 1: $p_1 = \frac{1649}{1968}$ Population 2: $p_2 = \frac{1674}{1938}$ Show more…

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University officials hope that changes they have made have improved the retention rate. Last year, a sample of 19681968 freshmen showed that 16491649 returned as sophomores. This year, 16741674 of 19381938 freshmen sampled returned as sophomores. Determine if there is sufficient evidence at the 0.050.05 level to say that the retention rate has improved. Let last year's freshmen be Population 1 and let this year's freshmen be Population 2. Step 2 of 3 : Compute the value of the test statistic. Round your answer to two decimal places

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