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In this video, we will review Ch. 9 material including creating and interpreting confidence intervals and determining necessary sample sizes.

In this video, we will review Ch. 9 material including creating and interpreting confidence intervals and determining necessary sample sizes.

In this video, we will determine the necessary sample size for a mean problem. We will also review how to calculate the critical value z sub alpha over 2.

In this abbreviated lecture video, we will cover Sections 9.1 and 9.2 We will learn about confidence intervals, margins of error, critical values, and how to calculate necessary sample sizes.

Calculating the sample size needed for a proportion problem