11/21/2023 0 Comments Bell curve squeed![]() ![]() The standard deviation of the bell curve is predictable.Īssumptions and restrictions in a Bell Curve.The average or the mean of the bell curve is always located in its middle.It helps to identify the star performers of their team to better reward them on their performance and also identify the low performers so that they may help them develop and recognize the barriers their employees might be facing. The bell curve formula provides managers with a comprehensive system by grading their performance distributed along the bell curve. In the bell curve appraisal method managers have to forcibly rank the employees in their teams into the above categories. Generally, the rough distribution of a bell curve graph goes something like this: The lifetime of a light bulb is a random variable with a normal distribution of x = 300 hours, σ = 35 hours.Bell Curve in performance management, in case you are unfamiliar, is a system of performance appraisal and a method to evaluate performance of employees by force ranking them into a bell shaped graph varying from worst performers to best performers. Assuming a normal distribution, how many women ran more quickly than Joan? Joan's finishing time for the bolder boulder 10 km race was 1.77 standard deviations faster than the women in her age group. If the data set contains 40 data values, approximately how many of the data values will fall within the range of 6.5 to 13.5?ĭecide by calculation how many candidates out of a total of 1000 candidates for the position of CEO meet the eligibility requirements for the desired performance of this top management position with at least 67% probability - provided, of course, that the The mean is 10, and the standard deviation is 3.5. Is there evidence to show that this group has A random sample of 50 students was given the same test and showed an average score of 83.20. If one starts assembling at 4 pm, what is the probability that he will finish before the comĪ standardized test was administered to thousands of students with a mean score of 85 and a standard deviation of 8. The assembly time for the toy follows a normal distribution with a mean of 75 minutes and a standard deviation of 9 minutes. What is the range in minutes 68% of the batteries will last? What is the range in minutes? How long will approximately 99.7% of b ![]() The life expectancy of batteries has a normal distribution with a mean of 350 minutes and a standard deviation of 10 minutes. How many tubes do have a length: a) between 16.5 cm and 18.1 cm b) greater than 17 cm The arithmetic mean is 17.27 cm, and the standard deviation is 1.2 cm. The participants receiving the top 5% of the s Consider that the scores in the exam are normally distributed with a mean of 78 and a standard deviation of 7.5. In a college entrance exam, the participants are rated as excellent, very good, good, and fair. What is the value of x if it is z = +1.50? Suppose a distribution has a mean µ = 8 and standard deviation σ = 4. three claims in a given week, more than four claims in a given Assuming that a Poisson distribution can model the number of claims, find the probability it receives. An insurance company receives, on average, two claims per week from a particular factory. ![]()
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