In testing the difference between the means of two normally distributed populations, the number of degrees of freedom associated with the unequal-variances t-test statistic usually results in a non-integer number. It is recommended that you:
a. round to the nearest integer.
b. change the sample sizes until the number of degrees of freedom becomes an integer.
c. assume that the population variances are equal, and then use df = n1 + n2 - 2.
d. None of these choices.
Question 2
Seasonal variation is one of the four different components of a time series. These are cycles that occur over short repetitive calendar periods and, by definition, have duration of less than one year.
Indicate whether the statement is true or false
Gangrene of the toes and foot as a result of an infection often means eventual amputation.
Voltmeter hook-ups for voltage-drop testing of a GM-type cranking circuit.
DNA Hypermethylation of Number of Known Genes
Difference between the house and the senate
Meiosis Halves the Chromosome Number
How gene drive alleles can spread through populations