To find the sample size for the true population mean

Assignment Help Basic Statistics

Reference no: EM1319148

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 individual dodge balls to vary. For quality control purposes, the manufacturer wishes to estimate the mean inflation pressure to within 0.025 pounds of its true value with a 99 percent confidence. What sample size should be used?

A. 677
B. 107
C. 62
D. 44
E. 30

Reference no: EM1319148

Questions Cloud

Advertising is higher than usual also the consumer price : Help wanted advertising is higher than usual also the consumer price index is up more than expected.Inflation has slowed markedly also the Dow Jones average is at record levels.

Test of single population proportion : Since 38% is less than 40%, does this mean that immediate production cutbacks are needed or can this difference of 2 percentage points be attributed to sampling?

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.

User Account

All Pages