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A vendor's offers discounts to entice larger quantity purchases. The price breaks are as follows:
Should the firm purchase the new equipment? The firm is now considering stepping the new volume to 45,000 units the month to produce even better quality products and raise the selling price to $1.10
Let X and Y denote the x and y coordinates, respectively, of a point selected at random from the line segment D={(x, y):y=x,0<x<1}.
Assume that when job candidate comes to interview for job at the RJB Enterprises, the probability that the candidate will want the job (A) after the interview is 0.65. Also, the probability that RJB
Find out the area under the standard normal curves that corresponds to the following z-values.
If we are to be 95% confident about our estimate, with 3% margin of error, what is the number of people who recently got new employment we should survey?
The following is the sample of heights of men from a locality in inches:
Obtain (a) the 94% , (b) the 98% and (c) the 90% confidence intervals and the margins of error for the proportion of workers who recently relocated to other states in order to find jobs.
Let B and C be independent random variables, uniformly distributed over [0,10] and [0,9] respectively. Determine the probability that both roots of the equation X^2 + BX +C = 0 are real?
The average age of doctors in certain hospital is 43.0 years old. Assume the distribution of ages is normal and has standard deviation of 8.0 years. If 25 doctors are selected at random for committe
If you choose a random sample of 30 download times, determine the probability that the sample mean is between 0.74 and 0.89 second?
The time T in days between printer jams is exponentially distributed with parameter á = 1.2. Determine the expected time between printer jams? What is the standard deviation of the time between
Customer arrival rate as well as service time follows Poisson and exponential distributions, respectively. Determine the Kendall notation for this system?
The constraint for given resource is given by the following equation: 2X1 + 3X2 ? 20. If X1 = 5 and X2 = 3, how many units of this resource are unused?
A queuing system has an arrival rate of 5 customers per hour and a service rate of 8 customers per hour. What is the utilization factor (?) of the system?
For poll, 43% of 21,944 people polled answered "yes" to given question. Given that 43% if the best estimate of population percentage, why would we require a confidence interval? That is, what addit
What distribution is appropriate for simulating the event of rolling a single die?
According to a survey it takes 0.7 second to download home page website. Assume that the download time was normally distributed, with standard deviation of 0.2 second. If you choose a random sample
The table below describe the gas mileage (in miles per gallon) of 8 cars with as well as without using the fuel additive. At a = 0.10, is there enough evidence to conclude that fuel additive improve
A distribution with u=55 and o~=6 is being standardized so that new mean and standard deviation will be u=50 and o~=4. When the distribution is standardized what value will be obtained for a score o
Scores from the statistics exam are reported as deviation scores, which of the following deviation scores indicates a higher position in the class distribution?
A poopulation has u=40 and o=8. If each socre is divided by 2, the new standard deviation will be?
Determine the best point estimate of the mean weight of all women. Find 99% confidence interval estimate of the mean weight of all women.
In least squares regression what is the distribution of the random variable B the estimator of the slope?
And standard deviation of 3.9 kg. Discuss why you fail to reject the null hypothesis if the confidence interval contains 0.