Abank has historically found that the average monthly charges in recent years on its credit card were $1,350. with an improving economy, they suspect that this has increased. a sample of 42 customers resulted in an average monthly charge of $1,376.54 with a standard deviation of $183.89. a. formulate hypotheses that can be used to determine whether the average monthly charge has increased. group of answer choices

Step-by-step explanation:

Let be the population mean for the monthly charges on credit card.

Given : A bank has historically found that the average monthly charges in recent years on its credit card were $1,350.

Since a null hypothesis shows that no statistical significance exists in two groups tested whereas alternative hypothesis is opposite of it.

Hypotheses that can be used to determine whether the average monthly charge has increased are :

Null hypothesis :

Alternative hypothesis :

24 units

step-by-step explanation:

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation: