What is the proportion of scores in a normal distribution between the mean (z = 0.00) and z = +0.52?
1 answer:
Answer:
20%
Step-by-step explanation:
We are asked to find the proportion of of scores in a normal distribution between the mean (z = 0.00) and z = +0.52.
We will use normal distribution table to find area under normal distribution curve corresponding to given score as:
Using normal distribution table, we will get:
Therefore, approximately 20% of scores in a normal distribution between the given z-scores.
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Answer:
There is a 4% probability that a customer buys three tires.
Step-by-step explanation:
We have those following percentages
60% buy four tires. This is also the probability that someone buys four tires.
22% buy two tires
14% buy fewer than two tires(one or none).
P% buy three tires
The sum of the percentages must be 100%.
So
There is a 4% probability that a customer buys three tires.