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A researcher wants to test the difference in the amount of active cultures of 2 types of yogurt. This is the data from the study where 5 random samples of each type were measured. Calculate the mean, standard error of the mean and 95% confidence interval for each type of yogurt. What would you conclude about the difference between the types of yogurt from this data?
Yogurt A Active Culture Concentration (million cultures/gram) Yogurt B Active Culture Concentration (million cultures/gram)
90 119
86 89
71 96
92 122
88 97
Standard Deviation: 8.35 Standard Deviation: 14.9
From Data Set 1, for a first age at marriage of 33.44, the proportion of area beyond the z-score associated with this age is 0.05.
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For each variable in the data set provided, classify the variable as Nominal, Ordinal, Interval or Ratio. Explain why you made the decision for each.
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