Conditions and Formulas Are you confident?. 1 proportion z-interval what variable(s) need to be defined? write the formula.

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Presentation transcript:

Conditions and Formulas Are you confident?

1 proportion z-interval what variable(s) need to be defined? write the formula

1 proportion z-interval

1 sample t-interval state the conditions/assumptions

1 sample t-interval data was collected using a random sample normality if data is given, using boxplot, histogram, etc. to verify sample is approximately normal/no outliers if sample size is greater than 40, Central Limit Theorem guarantees an approximately normal sampling distribution assume population 10 times sample size

1 sample t-interval what variable(s) need to be defined? write the formula

1 sample t-interval

1 proportion z-interval state the conditions/assumptions

1 proportion z-interval data was collected using a random sample the population is at least 10 times the sample size np > 10, n(1 – p) > 10 indicates the sample size is large enough