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Hypotheses in words Alternative hypothesis: Those who take Memory Booster will have a significantly different memory score from that of the general population. Null hypothesis: Those who take Memory Booster will have the same memory score as that of the general population. c. Statistical hypotheses HA: MB `" 7 H0: MB = 7 Step 2. Set the significance level ( ( = .05 Determine tcrit. 2.365 Step 3. Compute the appropriate statistical test. Memory after taking Memory Booster (X)  EMBED Equation.3  Deviation  EMBED Equation.3 Squared Deviation ( EMBED Equation.3 ) 28800981168-2488009811880078-119811"X = 64 N= 8SS = " ( EMBED Equation.3 ) 2 = 8 EMBED Equation.3 = 8    Step 4. 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Determine whether the value of the test statistic is in the critical region. Draw a picture. Label tcrit and tobt. Is tobt in the critical region? __yes____ Should you reject or retain the H0? reject    tcrit = -2.365 tcrit = +2.365 tobt = 2.65 Step 5. Report the statistical results. t(7) = 2.65, p < .05. Step 6. Write a conclusion. People who took Memory Booster had significantly higher memory scores (M = 8) than the general population ( = 7). Step 7. Compute the estimated d.  Step 8. Compute r2 and write a conclusion.  Approximately 50% of the variance in scores on the memory test can be attributed to Memory Booster. or Taking Memory Booster accounts for 50.08% of the variance in scores on the memory test.  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