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ELEN [110]
3 years ago
15

A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 46.046.0 and

56.056.0 minutes. Find the probability that a given class period runs between 50.2550.25 and 51.2551.25 minutes. Find the probability of selecting a class that runs between 50.2550.25 and 51.2551.25 minutes.
Mathematics
1 answer:
Gala2k [10]3 years ago
7 0

Answer:

The probability of selecting a class that runs between 50.2550.25 and 51.2551.25 minutes is 0.10

Step-by-step explanation:

The Uniform Distribution, also known as Rectangular Distribution, is a type of Continuous Probability Distribution. It has a continuous random variable restricted to a finite interval and its probability function has a constant density during this interval.

The formula of probability if given by:

f(x)=

\left \{ {{\frac{1}{b-a}; \ a \leq x \leq b  } \atop {0}; \ x \ otherwise } \right.

In this exercise a= 46.0 and b= 56.0

The probability of selecting a class that runs between 50.2550.25 and 51.2551.25 minutes is:

\int\limits^{51.25}_{50.25} {\frac{1}{56-46} } \, dx = \int\limits^{51.25}_{50.25} {\frac{1}{10} } \, dx = \frac{1}{10} \times (51.25 - 50.25)=\frac{1}{10}=0.1

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3 years ago
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Answer:

There is sufficient evidence to support the claim that the mean temperature is different from 42 deg

Step-by-step explanation:

From the given information, we are being told that:

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i. e  mean  μ = 42

The owner of the brewery does not agree with the refrigerator manufacturer, and claims he can prove that the true mean temperature is incorrect.

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From above;

The null and the alternative hypothesis can be computed as:

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The conclusion in non technical terms is that :

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4 0
3 years ago
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3 0
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