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When there is a worker error is 0.3, and the probability that an accident will occur when there is no worker error is 0.2. Find the probability of a worker error if there was an accident.
You are the shipping manager at the Postham Company. You are interested in the percentage of packages delivered damaged. A simple random sample of 500 packages yields 12 delivered damaged and 488 d
From a day's production of the three machines one article is selected at random. if it found that this article is defective, what is the probability that it was manufactured by machine X?
Students in the capstone business policy class are assigned to teams of three. In how many different ways could a team contain exactly one student from each concentration?
You are the shipping manager at the Postham Company. You are interested in the percentage of packages delivered damaged. A simple random sample of 500 packages yields 16 delivered damaged and 484 d
He asks listeners to phone in and vote "yes" if they agree the drinking age should be lowered and "no" if not. Of the 100 people who phoned in, 70 answered "yes." What is the margin of error for a 9
Samuel consumed 2151 calories of food on Monday, 2382 calories on Tuesday, and 1861 calories on Wednesday. In order for Samuel's average calorie intake to equal a daily average of 2200 calories, how
How many cars should be tested if Nikton wants to be 95% confident of being within 4 feet of the population mean braking distance?
A fair standard die is rolled until a four appears. X is the number of rolls that are necessary. What is the probability that X ≤ 2?
Although the packet claims a germination rate of 92%, only 171 or 200 test seeds sprout. Is this evidence that the seeds have lost viability during a year in storage?
They test the new brake system on a random sample of 36 cars and determine the sample mean braking distance (assume the population standard deviation is known to be 21 feet). Compute the 90% confide
The amount of snowfall falling in a certain mountian range is normally distributed with a mean of 105 inches, and a standard deviation of 16 inches. What is the probalility that the mean annual snow
Let denote the sample mean viewing time. What is the probability the sample mean will be within 0.25 hours of the population mean?
If, for the sake of argument, we assume that the proportion of customer delight is p = .48, calculate the probability of observing a sample proportion greater.
Using the sample data, construct a 99 percent confidence interval for the population mean. Does the 99 percent confidence interval include the value suggested by the NCAA? Interpret this result.
The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.3 inches. What is the probability that the average length
Suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear correlation between two variables. Find the critical values of r given the number of
Find the 98% confidence interval for the mean number of peaches per tree. How many trees does she need to sample to be accurate within 10 peaches per tree?
The mean hourly salary was $20.50, with a standard deviation of $3.50. If we select a crew member at random, what is the probability the crew member earns?
A regression equation is obtained for a collection of paired data. It is found that the total variation is 24.488, the explained variation is 15.405, and the unexplained variation is 9.083. Find the
As a result of the tougher admission standards adopted in 1995, compared to the proportion in 1993? To determine this, you test the hypotheses.
The paired data below consists of test scores and hours of preparation for 5 randomly selected students. The equation of the regression line is = 44.8447 + 3.52427x. Find the explained variation.