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The manufacturer of a laser printer reports the mean number of pages a cartridge will print before it needs replacing is 12,250. The distribution of pages printed per cartridge closely follows the normal probability distribution and the standard deviation is 770 pages. The manufacturer wants to provide guidelines to potential customers as to how long they can expect a cartridge to last.
How many pages should the manufacturer advertise for each cartridge if it wants to be correct 95 percent of the time? (Round z value to 2 decimal places. Round your answer to the nearest whole number.)
explain what will happen to the width of a confidence interval increase decrease or remain the same as a result of
The Aloha Banking Co. is studying ATM use in suburban Honolulu. A sample of 30 ATM's showed they were used the following number of times yesterday.
What is the long run expected number of cars in the system - Find the long run probability that a caller is put on hold?
Population was computed to be 126.9 grams and the standard deviation was 1.20 grams. which food results in more uniform weight.
Click on the euro in the first column in order to generate a historical trend of the direct exchange rate of the euro. Click on 5y to review the euro's exchange rate over the last 5 years. Briefly explain this trend (whether it is mostly upward or..
a researcher is interested in estimating the mean length of walleye in a lake with a 95 confidence interval. assuming
Your poster should highlight the problem and its motivation, your approach and principal contributions, the results of your experiments, and any major take-aways for the future - development of your statistical analysis, including a mathematical f..
Many law enforcement agencies use voice-stress analysis to help determine whether persons under interrogation are lying. If the sound frequency of a person's voice changes when asked a question
in new york city the average response time for calls to the first depatrment is a bout 5 minutes with a standarrd
A random sample of 50 households revealed a mean of $112,000 and a standard deviation of $40,000. What is the standard error of the mean?
a numerical measure of linear association between two variables is thea. coefficient of variationb. variancec. standard
Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify.
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