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Q1: Fill in the missing components of the following frequency distribution constructed for a sample size of 50:Class Frequency Relative frequency Cumulative relative frequency7.85 less than 0.12less than 8.05 0.488.05 less than 0.24 less than 8.25 0.10 8.25 less than
Find the area under the normal distribution curve between z = -0.05 and z = 2.85.
A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ tesst, what is the probability that the sample mean scores will be between 85 and 125 points?
What is the new project completion time and what is the new total project cost - Identify what are the time and the path of this minimum cost schedule.
Suppose Ana has a pair of dice (the traditional six-sided kind). Let X= the difference of the largest minus the smallest number showing on the dice. Find the PMF for X.
Use decision analysis tools discussed in class to determine what action the firm should pursue in order to minimize expected loss; either manual analysis or software is acceptable. Please also calculate the minimum expected loss.
Find the indicated probabilities using Poisson distribution. Then determine if the events are unusual. A newspaper finds that the mean of typo error is five. Find the probability that a) exactly for errors found on a page, b)at most for errors ..
Do the independent variables correlate statistically significantly and practicallywith the dependent variable and is collinearity between the independent variables a concern?
question 1a marine biologist has evidence from other studies that the number of fish is declining in certain lakes
DeeDee Toys has an annual demand of 192,000 Pooh bears. The company manufactures its bears at a rate of 3200 per day. Carrying cost is $4 per bear per year. Setup cost for a production run of bears is $180. The company operates 240 days per year. ..
SPC is one of a number of tools which can be used to improve manufacturing quality standards - Outline two techniques which can be used to decide where to put SPC effort most effectively.
A more general exponential reliability model may be defined by R(t)=a^(-bt) where a>1, b>0 and a and b are parameters to be determined. Find the hazard rate function, and show how this model is equivalent to R(t)=e^-(lambda*t).
Consider a monthly time series dataset for which we believe that the model Xt = (at + b)st + Zt is appropriate where st is a seasonal function i.e., st+d = st and Zt is white noise. What would be a way to difference the data in order to elimin..
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