To find the sample size for the true proportion

Reference no: EM1319146

To find the sample size for the true proportion.

The Ohio Department of Agriculture tested 203 fuel samples across the state in 1999 for accuracy of the reported octane level. For premium grade, 14 out of 105 samples failed (they didn't meet ASTM specification and the FTC Octane posting rule). How many samples would be needed to create a 99 percent confidence interval that is within 0.02 of true proportion of premium grade fuel-quality failures?

A. 4148
B. 2838
C. 1913
D. 744
E. 54

Reference no: EM1319146

Questions Cloud

Find the confidence interval for the proportion : A recent study of 75 workers found that 53 people rode the bus to work each day. Find the 95 percent confidence interval of the proportion of all workers who rode the bus to work.

Incompetent persons-subjective standard : Describe the similarities and differences. Also describe how quality of life considerations, the best interest standard, the subjective standard, and substituted judgment come into play as decisions are being reached.

To find the sample size for the true population mean : A manufacturer of dodge balls uses a machine to inflate its new balls to a pressure of 13.5 pounds (σ =0.1). When the machine is properly calibrated, the mean inflation pressure s 13.50 pounds, but uncontrollable factors can cause the pressure of ..

Two firms compete for consumers what the outcome : Two firms compete for consumers who have aggregate Demand x=100-2P. Both firms have constant marginal costillustrate both firms' best response functions & indicate Illustrate what the outcome is for each firms'.

To find the sample size for the true proportion : How many samples would be needed to create a 99 percent confidence interval that is within 0.02 of true proportion of premium grade fuel-quality failures.

Hypothesis test using single proportion : What is the null hypothesis? What is your decision if a = 0.01?

Find which numbers are solutions to the given equality : Find which numbers are solutions to the given equality.

Interaction graph about three effects tested : Interpret the interaction graph in terms of what it shows about the three effects tested.

Compare the additional income microsoft makes as it moves : Compare the additional income Microsoft makes as it moves from 20 million to 40 million copies of Vista with the additional income it makes as it moves from 40 million to 60 million copies of Vista.

User Account

All Pages