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A survey of 527 citizens found that 400 of them favor a new bill introduced by the city. We want to find a 95% confidence interval for the true proportion of the population who favor the bill. What is the lower limit of the interval?
a die is loaded and a 6 comes up with probability 1?4. if the die is tossed twelve times find the probability thata the
question the marketing manager of a larger supermarket chain would like to use shelf space to predict the sales of pet
a random sample of 15 accounting graduates indicated on average they had taken 139 credit units with a standard
If the manufacturer wanted the mean profit per coat (i.e., the expected profit) to be more than $30, what is the maximum reduction that can be offered per defect in the sample.
When the t distribution is used in constructing a confidence interval based on a sample size of less than 30, what assumption must be made about the shape of the underlying population?
The service times of the arrivals are independent exponential random variables with rate μ, and are independent of the arrival process. Customers depart the system when their service ends. Let N be the number of arrivals before the ?rst departure.
Use this information to develop a 95% confidence interval to estimate the production variance for the hourly wages of production workers in U.S. What is the value of upper limit of this confidence interval?
the loaves of rye bread distributed to local stores by a certain bakery have an average length of 30 centimeters and a
The time spent waiting for a heart transplant in Ohio and MIchigan for patients with A+ blood can be approximated by a normal distribution with a mean of 127 days and a standard deviation of 23.5 days. What is the longest time spent waiting for a ..
The paper towels have a normal distribution with a mean of 49.5 ml and a standard deviation of 4.3 . If 3% of the paper towels exceed a specified volume of absorption of a, what is the value of a?
the capital asset pricing model is a financial model that assumes returns on a portfolio are normally distributed.
If she were to order 80 pounds of pepperoni at a time, what would be the total daily costs, including the cost of the pepperoni?
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