I am not sure if you gave all of the information but if you did A because A > B. Did I miss something?
Answer:
z = -0.4.
Step-by-step explanation:
Here's the formula for finding the z-score (a.k.a. standardized normal variable) of one measurement
of a normal random variable
:
,
where
is the z-score of this measurement,
is the value of this measurement,
is the mean of the random normal variable, and
is the standard deviation (the square root of variance) of the random normal variable.
Let the length of a trout in this lake be
inches.
.
, and
.
For this measurement,
. Apply the formula to get the z-score:
.
The price of the hot dogs is $1.50 and $1 for soft drinks.
$9(6 hot dogs)+$4(4 soft drinks)=$13
$4.50(3 hot dogs)+$4(4 soft drinks)=$8.50
Answer:
C) aₙ = aₙ₋₁ + 200
Step-by-step explanation:
Each term is 200 more than the previous term. So:
aₙ = aₙ₋₁ + 200