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The auditor wishes to evaluate what proportion of bank's commercial loan files are incomplete. Auditor wants to be within 7% of true proportion when using 95% confidence level. How many files should auditor sample? No estimate of proportion is available, so use 0.5 for population proportion.
Jeweller desires to know how many of each item to make each week to maximize profit. Create the integer programming model for this problem (written in format similar to way Problems 1 and 2 were presented).
At α = .01, did yellow fire trucks have a considerably lower accident rate? Determine sample proportions and z test statistic.
You want to estimate today's mean temperature, so you make a series of measurements (taken as a sample) throughout the day. The mean of these measurements is 63 degrees Fahrenheit, and their standard deviation is 3.4 degrees Fahrenheit.
A state survey investigates either the proportion of 8percent for employees who commute by car to work is higher than it was five years ago.
a. Determine the sample proportion, p, of households with cellular telephones that can be used to access the Internet. b. If the population proportion is 0.40, determine the standard error of the proportion.
The goal at U.S. airports handling international flights is to clear these flights within 45 minutes. Let's interpret this to mean that 95 percent of the flights are cleared in 45 minutes
Recognize and describe potential threats (up to 3) to internal validity.
Write the example of statistics in news to explain the following statement which represents one of the objectives of statistics analysis: "Statistics assists us make decisions.
If an apartment is selected at random, what is the probability that it is not a 2 bedroom apartment on the 2nd floor?
The smallest defect in a computer chip will render the entire chip worthless. Therefore, tight quality control measures must be established to monitor the chips.
What would you predict the price per share to be if 95 million shares were offered?
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
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