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Statistics Resources

Bjorn Talooz, a Norwegian exchange student, would like to estimate the amount of money he spends daily. A sample of 10 days shows the mean average expenditure to be $6.24 per day. Use σ=$2.28 for...

The Russel Caddel Beef Company wants to estimate the average weight of a steer in its current herd. A random sample of 51 cows showed the mean weight to be 400 lbs. The population standard deviation...

Every year the ETS administers the Major Field Test in Psychology (MFTP) to graduating psychology majors. In 2003 Baylor University wondered how its students compared to the national average...

The population mean for NFL football players' weights is μ=265 lbs., with σ=28.8 lbs. Assume a normal distribution. A coach randomly selects 10 players. What is the probability that the...

The population of U.S. residents who ride elevators has a μ=175 lbs with σ=35 lbs. If your building has an elevator with a maximum load of 2,000 lbs. What is the probability that...

A random sample is obtained from a population with μ=100 and σ=20 Calculate the standard error for a sample of size n = 4 Calculate the standard error for a sample of size n = 16 Calculate the standard...

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