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A manufacture makes makes two models of an item. Model 1 which accounts for 89% of unit sales, and model 2, which accounts for 11% of unit sales. Because of defects the manufacture has to replace (or exchange) 11% of its model 1 and 13% of its model 2. If a model is selected at random, find the probability that it will be defective. Please round the answer to 2 or 3 decimal places.
P(defective)=
Hunter executives want you to determine which of the two advertising plans leads to the largest average sales levels for the new product.
Explain how fonts or formats might incorrectly be used to represent information, and give an alternative way of representing that same information that would be suitable for analysis by IBM SPSS.
1. What is the probability that McBurgers could provide a meal in less than 4 minutes? 2. What is the probability that McBurgers could provide a meal in more than 5 minutes?
If the child chooses the marbles at random, what is the chance that the child gets all of the red marbles? Marbles are not replaced.
1. Construct the exponentially smoothed series for fried dough and soft drinks using a = 0.30 and a = 0.70.
the average length of life of a brand of light bulb is 2000 hours with a population standard deviation of 120. a sample
Use Chebyshev's theorem to find what percent of the values will fall between 162 and 292 for a data set with a mean of 227 and standard deviation of 13.
The portfolio Manager of Pension planners has been asked to invest $1,000,000 of a large pension fund. The investment research development department has identified six mutual funds with varying investment strategies, resulting in different potent..
You are to gather a systematic sample from a local phone book with 75,000 names. If every kth name in the phone book is to be selected, what value of k would you choose to gather a sample size of 500?
In a poll to estimate presidential popularity, each person in a random sample of 1000 voters was asked to agree with one of the following statements:
A professor wants to determine if his class' anxiety decreases over the course of the semester. He uses a test to measure a random sample of all students enrolled at midterm and again at the end of the course.
x1, x2, x3 are zero mean Gaussian random variables with STD=4. Let x1 and x2 be independent and x3= a*x1+b*x2. Find the constants “a” and “b” such that the correlation between x1 and x3 is 0.3. What is the correlation between x3 and x2?
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