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A car dealership likes to estimate the mean of balance owed by those who financed their auto purchase. The population standard deviation is estimated to be $3000. If 95% confidence interval isused and interval of $1200 is desired, what should be the sample size? Need to know the steps of how to get to answer so I can learn it not just answer.
1. gas in a 1500 in3 cylinder at 2000 lbin2 gauge is reduced in volume to 1000 in3 while heated from 75degf to 250
Use Chebyshev's theorem to find what percent of the values will fall between 201 and 345 for a data set with a mean of 273 and standard deviation of 18.
assume that a procedure yields a binomial distribution with a trial repeated n times. use the binomial probabilities
Suppose that a point is chosen at random on a slick of unit length and that the stick is broken into two pieces at that point
Based on her experience, the probability of a cauliflower being eaten by the rabbits before harvest is 0.40.
One of these has a history of selling an average of 200 items, with a standard deviation of 20. If he wants to maximize his profits, how many should he order?
q1.if n 10 and p 0.70 then calculate the mean standard deviation and variance of the binomial distribution.q2.suppose
A collection of tickets comes in four colors: red, blue, white, and green. There are twice as many reds as blues, equal numbers of blues and whites.
A fair die is rolled nine times. What is the probability that an odd number (1,3 or 5) will occur less than 3 times?
State appropriate null and alternative hypotheses. Report the test statistic, its degrees of freedom, and the P-value. What do you conclude?
It is estimated that the number of text messages sent daily by a high school student is normally distributed with a mean of 200 and a population standard deviation of 50. What is the probability that a randomly chosen student sent less than 210 te..
It takes 1.5 hours to make a finished unit, and the expected hourly wage rate is $14 per hour - Prepare a direct labor budget by quarters for the 6 months ending June 30, 2011.
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