The test statistic for a hypothesis test ___________________ ___________________ ___.
A) determines the observed level of significance
B) is based on the significance level and determines the boundary for the rejection region
C) represents the number of standard deviations between the sample mean and the population mean according to the alternative hypothesis
D) represents the number of standard deviations between the sample mean and the population mean according to the null hypothesis
Question 2
The sample ____________ measures both the direction and strength of the linear relationship between two variables.
A) variance
B) covariance
C) z-score
D) correlation coefficient
Pressure-flow hypothesis for phloem transport
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