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1) Two students are working independently on a problem. The probability for each student to solve the problem correctly is 3/7 and 4/8 respectively. What is the probability that at least one of the student will solve the problem correctly? Please answer in the form of a percentage
2) Happy Birthday!!
What is the probability of exactly 4 people in a group of 15 to have the same birthday?
Please answer in the form of a probability to the thousandths place (i.e. use decimal places).
3) If there are 133 balls in a bag labeled from 1 - 133, and you choose one, what is the probability it it will be an odd number or greater than 77?
Please answer in the form of a percentage to 1 decimal place.
Can Instant message replace e mail in the future" - Can Instant message be a primary source of internal communication? -How this instant message system will work? -What cost would be? etc...
Using the annual number of employees as weights, what is the weighted mean for annual utility plant investment per employee during this period?
A government survey conducted to estimate the mean price of houses in a metropolitan area is designed to have a margin of error of $10,000.
A firm is considering using the Internet to supplement its traditional sales methods. From the data of similar firms, it is estimated that one of every 1,000 Internet hits result in a sale. Suppose the firm has 2,500 hits in a single day. Write an..
For each set of data, calculate mean, median, mode, range, interquartile range, standard deviation, and coefficient of variation.
The vessel where the second reaction will take place. The times for the two reactions are independent. Find the standard deviation of the time required to complete the process.
A researcher is curious whether or not a person's level of education influences his or her personal outcome. Identify the most logical (i) response
let y1 and y2 be uncorrelated random variables. consider u1 y1 y2 and u2 y1-y2.a. find the covariance between u1 and
The two-parameter gamma distribution can be generalized by introducing a third parameter g, called a threshold or location parameter: replace x in (4.8) by x - g and This amounts to shifting the density curves in Figure 4.27 so that they begin the..
x and y are independent random variables with common moment generating functionlet w x y and z y - x. determine the
Toss a fair die repeatedly. Let Sn denote the total of the outcomes through the nth toss. Show that there is a limiting value for the proportion of the first n values of Sn that are divisible by 7, and compute the value for this limit. Hint : The des..
The manager wants to adjust the mean to reduce the reject rate. Compute the probability of underfilling for several values of the mean fill.
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