4. an organizational psychologist measures levels of job satisfaction in a sample of 30 participants. to
measure the variance of job satisfaction, it is calculated that the ss = 120 for this sample.
a. what are the degrees of freedom for the variance?
n= degrees of freedom (df): value - 1
the degrees of freedom of an estimate of variance is equal to n-1
the "n” refers to the number of observations
formula:
1) sample size of n = 30 / value or ss/n = variance
2) ss = 120/30 = 4 (df)
3) 30-1= 29 degrees of freedom

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315