How large would sample size have to be-cut margin of error
A survey was conducted of the age in years of 50 randomly selected customers. The mean was 27.47 years with a standard deviation of 10.69 years.
About how large would the sample size have to be to cut the margin of error by a factor of 4?
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Amy's Weathervane Company manufactures weathervanes. The 2011 operating budget is based on the production of 5,000 weathervanes with 1.25 machine-hour allowed per weathervane. Variable manufacturing overhead is anticipated to be $150,000.
A confidence interval for the price of gasoline from a random sample. If we had the same stats from a sample of 80 stations, what would the 95% confidence interval rating be?
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The mean was 27.47 years with a standard deviation of 10.69 years. About how large would the sample size have to be to cut the margin of error by a factor of 4?
If the company meets its target net income number, by what percentage could its sales fall before it is operating at a loss? That is, what is its margin of safety ratio? (Round your answer to 1 decimal place, e.g. 25.4.)
You have credit sales for the year of 1,000,000. return and allowances are 100.000.You write-off an amount for 50,000 during the year. subsequent to this.
A meteorologist who sampled 13 thunderstorms found that the average speed at which they traveled across a certain state was 15 miles per hour. The standard deviation of the sample was 1.7 miles per hour. Find the 99% confidence interval of the me
A company has inventory of 15 units at a cost of $11 each on August 1. On August 5, they purchased 11 units at $14 each. On August 15, they sold 20 units. Using the FIFO perpetual inventory method, what is the cost of the 20 units that were sold?
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