Question: 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
    For this assignment, you will use the dataset provided to conduct an

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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