The waiting time (in minutes) at the cashier of two supermarkets. Chains with different checkout systems are compared. The following statistical test was performed: Two Sample t-test data: Sales by Store t = -6.4535, df = 94, p-value = 2.364e-09 alternative hypothesis: true difference in means is less than 0.95 percent confidence interval: -Inf -12.00525 sample estimates: mean in group SuperSavings 97.28212 mean in group KioskoSavings 113.44896 Which of the following sentences is correct? (significance level is 5%) Select one or more than one: a. The absolute value of the test statistic is greater than 1.96. b. An alternative one-sided hypothesis test is used. c. The p-value is greater than 0.05. d. The test shows that the waiting time is longer in SuperAhorro than in KioskaAhorro. e. The test result shows that the waiting time is shorter in SuperAhorro than in KioskoAhorro.
The waiting time (in minutes) at the cashier of two supermarkets. Chains with different checkout systems are compared. The following statistical test was performed:
Two Sample t-test data: Sales by Store
t = -6.4535, df = 94, p-value = 2.364e-09 alternative hypothesis: true difference in means is less than 0.95 percent confidence interval: -Inf -12.00525
sample estimates:
Select one or more than one:
a. The absolute value of the test statistic is greater than 1.96.
b. An alternative one-sided hypothesis test is used.
c. The p-value is greater than 0.05.
d. The test shows that the waiting time is longer in SuperAhorro than in KioskaAhorro.
e. The test result shows that the waiting time is shorter in SuperAhorro than in KioskoAhorro.
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