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For this assignment, you will use the dataset provided to conduct an independent samples t-test to determine if average salt water concentrations (expressed as grams

For this assignment, you will use the dataset provided to conduct an independent samples t-test to determine if average salt water concentrations (expressed as grams of salt per kilogram of water, or g/kg) are significantly different between the Atlantic and Pacific Oceans. The dataset provided includes daily salt water concentrations for each ocean over a one month (31 day) period. Use this data to conduct an independent samples t-test (two-samples t-test). Then copy and paste the SPSS output tables for the independent samples t-test to a Word document, and develop a summary in which you address the following:

  • Indicate whether or not Levene's test was significant and explain how you know
  • Identify which t-test statistic you will use, based on Levene's test (equal variances assumed, or equal variances not assumed)
  • Based on this t-test statistic and its p-value, indicate whether or not there is a significant difference between the salt water concentrations in the two locations, and explain how you know
    image text in transcribed
Group Statistics Std. Std. Error Ocean N Mean Deviation Mean Salinity Atlantic 31 32.74 2.543 457 Pacific 30 35.77 1.633 .298 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of Significance Mean Std. Error the Difference F Sig t df One-Sided p Two-Sided p Difference Difference Lower Upper Salinity Equal variances 4.610 .036 -5.508 59 <.001 .549 assumed equal variances not .545 independent samples effect sizes standardizera point confidence interval estimate lower upper salinity cohen d hedges correction glass delta a. the denominator used in estimating sizes. uses pooled standard deviation. deviation plus a factor. sample of control group>

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