Answer:
z = 1
Step-by-step explanation:
15z + 35 = 50
15z = 50 - 35
15z = 15
z = 15/15
z = 1
To draw a histogram, you need two axes. The horizontal axis is the day and the vertical axis is the number of text messages. For the first day, there are 20 text messages. This is represented by a bar starting from the horizontal axis labeled Day 1 going up to the point where the vertical axis indicates 20 text messages. This is done for the rest of the data. Afterwards, a line is drawn from the vertex of the axes connected to the top of the first bar. Then from the top of the first bar, a line connects it to the top of the next bar. This is done for all the bars before producing a histogram.
In expanded form it is 4 + 0.7 + 0.02
Answer:
In a standard normal distribution;
The mean of the population is going to be zero and the population standard deviation is automatically one.
In a nonstandard normal distribution;
The mean of the population is not equal to zero and the population standard deviation is not equal to one.
Step-by-step explanation:
When looking at a normal distribution: There are three major keys we need to understand:
- The bell shaped curve is the first thing that comes to the mind. In the bell- shaped curve, the mean is locate in the middle.
- The total area under the curve is equal to 1.
- The bell shape is symmetrical.
The major difference between a standard normal distribution and a nonstandard normal distribution is that:
In a standard normal distribution, there are two additional things attached.
The mean of the population is going to be zero and the population standard deviation is automatically one.
In a nonstandard normal distribution;
The mean of the population is not equal to zero and the population standard deviation is not equal to one.
