Answer:

Step-by-step explanation:
Z - score
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:

Calculate the Z value for the next car that passes through the checkpoint will be traveling slower than 65 miles per hour.
This is Z when X = 65. So



Answer:
Scientific notation can be used to turn 0.0000073 into 7.3 x 10-6.
First, move the decimal place until you have a number between 1 and 10. If you keep moving the decimal point to the right in 0.0000073 you will get 7.3.
Next, count how many places you moved the decimal point.
Step-by-step explanation:
Rotation 90 degrees counterclockwise about the origin.
$ 7 dollars a week for 4 weeks...
7 * 4 = $ 28 <==