Pre-Calculus

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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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Chebyshev's Theorem states that for any set of​ numbers, the
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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 the city of Longskank, the mean adult weight is 62kg and
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I have a final exam I need help with. Class QRB 501. It is
Hello, I have a final exam I need help with. Class QRB 501. It is 30 questions long and I only have 120 minutes to complete it. Can you help me? It is very time restricted so I need to know if that is… read more
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1. A credit card company decides to study the frequency with
1. A credit card company decides to study the frequency with which its cardholders charge for items from a certain chain of retail stores. The data values collected in the study appear to be normally … read more
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Question 1 Assume that the weight loss first month
Question 1 Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform dis… read more
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18. Assume that a sample is used to estimate a population mean
18. Assume that a sample is used to estimate a population mean mu. Use the given confidence level and sample data to find the margin of error. Assume that the sample is a simple random sample and the … read more
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"For John Only " Hi John.. I noticed you have answered
"For John Only " Hi John.. I noticed you have answered similiar questions to the ones I would like for you to help me with. Hopefully you will be able to. 1. The commissioner of the state police is re… read more
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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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1. What is the primary reason for applying a finite population correct
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25) How much money would we need to pay off a \$2,000 loan at
25) How much money would we need to pay off a \$2,000 loan at 8% interest, 4 years from now? A. \$3,220 B. \$2,721 C. \$1,978 D. \$2,632 26) When interest is compounded, the total time period is subdivided… read more
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1) If n = 100 and p = 0.02 in a binomial experiment, does
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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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Suppose your new Ostrich brand computer comes with a two year
Suppose your new Ostrich brand computer comes with a two year warranty. You do some research and find that the lifespan of these computers is distributed normally with a mean life of 32 months and a s… read more
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