A store manager is looking at past jewelry sales to determine what sizes of rings to keep in stock. The list shows the ring size
2 answers:
You might be interested in
Answer:
And we can find this probability using the normal standard distribution or excel and we got:
Step-by-step explanation:
For this case we assume the following complete question: "The pucks used by the National Hockey League for ice hockey must weigh between 5.5 and 6 ounces. Suppose the weights of pucks produced at a factory are normally distributed with a mean of 5.86 ounces and a standard deviation of 0.13ounces. What percentage of the pucks produced at this factory cannot be used by the National Hockey League? Round your answer to two decimal places. "
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability using the normal standard distribution or excel and we got:
Answer:
0.025
Step-by-step explanation:
-This is a conditional probability problem.
-Let L denote lens defect and C charging defect.
#We first calculate the probability of a camera having a lens defect;
#Calculate the probability of a camera having a charging defect:
The the probability that a camera has a lens defect given that it has a charging defect is calculated as:
Hence, the probability that a camera has a lens defect given that it has a charging defect is 0.025
Answer:
The quantity of Jennie's skin cell were not burned is 119.601 × .
Step-by-step explanation:
Given as :
The percentage of Jennie's skin cell were burned = 3 %
The quantity of Jennie's skin cell were burned = 3.7 ×
Let The quantity of Jennie's skin cell were not burned = x
Let Total quantity of whole skin cell = n
<u>Now, According to question</u>
The quantity of Jennie's skin cell were burned = Total quantity of whole skin cell × percentage of Jennie's skin cell were burned
i.e 3.7 × = n × 3 %
Or, 3.7 × = n ×
Or, n = 3.7 × ×
Or, n =
i.e n = 1.233 ×
Or, Total quantity of whole skin cell = n = 1.233 ×
<u>Now, Again</u>
∵ percentage of Jennie's skin cell were burned = 3 %
So, percentage of Jennie's skin cell were not burned = 100 % - 3 % = 97 %
so , The quantity of Jennie's skin cell were not burned = 97 % of Total quantity of whole skin cell
Or, x = × n
Or, x = × 1.233 ×
∴ x = 119.601 ×
So, The quantity of Jennie's skin cell were not burned = x = 119.601 ×
Hence, The quantity of Jennie's skin cell were not burned is 119.601 × . Answer