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1. The amount of time working Bellingham Technical College
1. The amount of time working Bellingham Technical College students work per week is approximately normally distributed with a mean of 18.5 hours and a standard deviation of 4.2 hours.(a) What is the … read more
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The depth of the snow in my yard is normally distributed,
The depth of the snow in my yard is normally distributed, with a mean of 2.5 inches and a standard deviation of 0.25 inches.What value is one standard deviation below the mean? in inchesWhat value is … read more
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Answer the following questions using the z-score chart or by
Answer the following questions using the z-score chart or by using a spreadsheet.5. For a mean of 153 and standard deviation of 25, find P of 130 is less or equal to X is less or equal to 170. 6. IQ s… read more
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The length of time a full length movie runs from opening to
The length of time a full length movie runs from opening to credits is normally distributed with a mean of 1.9 hours and standard deviation of 0.3 hours. Calculate the following: a) A random movie is … read more
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Suppose x has a distribution with a mean of 80 and a
Suppose x has a distribution with a mean of 80 and a standard deviation of 9. Random samples of size n = 36 are drawn. (a) Describe the x bar distribution. x bar has a normal distribution. x bar has a… read more
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If random variable X is normally distributed with mean 80
if random variable X is normally distributed with mean 80 and standard deviation 10, find the probability of the following A( P(X<95)= B( P(X>75)= C (P70< X <100)=… read more
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A lumber machine cuts are normally distributed, with a mean
A lumber machine cuts are normally distributed, with a mean of 96 inches and a standard deviation of 0.5 inches. you randomly select 40 board. Find the probability their mean length is between 95.85 i… read more
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In an experiment, we flip a biased coin 100 times. The
In an experiment, we flip a biased coin 100 times. The probability, that we get a head is p=0.2. Let X be the random variable that counts the number of heads in this experiment. Let Y be a random vari… read more
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Question 1 Assume that the weight loss first month
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Please not that a proper conclusion specific to the problem
Please not that a proper conclusion specific to the problem at hand must be provided for each answer. (Example: If a question asks, what is the probability of selecting a worker at random and finding … read more
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FOR SCOTT ONLY, Scott think you can have this for me today?
FOR SCOTT ONLY, Scott think you can have this for me today? Seems pretty simple just matching things up...Also are you free tonight to do the math lab stuff for this week same time as usual like 6:15 … read more
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1. For a particular sample of 80 scores on a psychology exam,
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For a normal distribution find a value of Z such that 10% of
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What is the mean annual snowfall during 49 randomly picked years?
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The specifications call for a shaft to be 1.000 inch in diameter.
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Suppose your new Ostrich brand computer comes with a two year
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Given that x is a normally distributed random variable with
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The amount of time spent by North American adults watching television
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