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The time it takes a student to finish a electronics test has a uniform distribution between 50 and 70 minutes.
(1) What is the probability density function for this uniform distribution?
(2) Find the probability that a student will take more than 60 minutes to finish the test.
(3) Find the probability that a student will take no less than 55 minutes to finish the test.
(4) Find the probability that a student will take exactly one hour to finish the test.
(5) What is the median amount of time it takes a student to finish the test?
(6) What is the mean amount of time it takes a student to finish the test?
Index number acts as a barometer for measuring the value of money. What are the characteristics of an index number? State its utility.
Thompson Machine Works purchased several new, highly sophisticated machines. The production department needed some guidance with respect to qualifications needed by an operator. Four variables were listed.
The dying rate in an industrial process is department of many factors and varies according to the following distribution.
Create a 90% confidence interval for true mean amount of cholesterol in chicken eggs.
Determine the probability, P(Z
10 cartons are taken at random from an automatic filling machine.The mean net weight of the carton is11.8 kg and standard deviation of 0.15kg. Does the sample mean differ significantly from the intended weight of 12kgs?
The incubation time for Rhode Island Red chicks is normally distributed with a mean of 21 days and standard deviation of approximately 1 day.
Which statement about re-expressing data is not true? I. Unimodal distributions that are skewed to the right will be made more symmetric by taking the square root of the variable.
Design a contingency table that will hold your data. What are your degrees of freedom and critical value at a 0.05 confidence level? You do not need data to answer this.
A restaurant has an ice cream counter where it sells two main products, ice cream and frozen yogurt. The restaurant makes one order for ice cream and yogurt each week, and the store has enough space for 115 gallons of both products.
Multiple comparison procedures are going to be done using the Bonferroni method with α = 0.10. The value of t** is 2.2426. The smallest minimum significant difference (MSD) for finding a difference between groups is computed as 17.68. The correct ..
There are two car dealerships in a particular region. The mean monthly sales at the two dealerships are about the same. Though, one of the dealerships (dealership A) is boasting to corporate headquarters that his dealership's monthly sales are mor..
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