Solution-Confidence interval for the difference between

Confidence interval for the difference between success rates

Assignment Help Basic Statistics

Reference no: EM132522185

A dean compares the percentage of students passing a common statistics final between two large classes. The dean randomly selects 40 students from Professor Lebowski's class and 40 students from Professor Colono's class. 24 of Professor Lebowski's students passed the exam and 19 of the students from Professor Colono's classes passed.

Construct a 95% confidence interval for the difference between the success rates of Professor Lebowski and Professor Colono.

a) (0.012, 0.433)
b) (-0.033, 0.401)
c) (-0.092, 0.342)
d) (-0.126, 0.302)
e) can't make interval

To examine the level of employee satisfaction in stores in NYC, researchers randomly selected eight store locations and surveyed all employees at these locations. What is the type of sampling method?

a) Simple random sampling
b) Stratified random sampling
c) Cluster sampling
d) Systematic sampling
e) Convenience sampling

Reference no: EM132522185

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Confidence interval for the difference between success rates

Reference no: EM132522185

Reference no: EM132522185

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