tobyfoerst
24.10.2021 •
Mathematics
Let X be the thickness of a steel bolt produced in a manufacturing process. It is known that the thicknesses follow a normal distribution with a mean of 10 mm and a standard deviation of 1.6 mm. A. In order to meet specifications, the thickness needs to be between 9.2 mm and 10.8mm. What is the probability that a randomly selected bolt meets specifications
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Ответ:
Degrees of freedom
Step-by-step explanation:
Df denotes or means the Degrees of Freedom.
From the given question therefore, To solve the value of Df,
Value of Df = n - 1
That is 32 - 1 = 31.
Hence Degrees of Freedom or
Df = 31.