How large a sample required to reduce standard deviation

Reference no: EM13113473

A survey of 94 students found that 23% were in favor of raising tution to build a new math building. The standard deviation of the sample proprortion is 5.3%. How large a sample (to the nearest person) would be required to reduce this standard deviation to 3.7%?

Reference no: EM13113473

Questions Cloud

Find mean-standard deviation of sample distribution of mean : Ppopulation with a mean of 240 and standard deviation of 18. Find the mean & standard deviation of sample distribution of the mean?

Determine the limiting and excess reactant : Silicon Carbide is a hard substance used as an abrasive. it is prepared by heating SiO2 and carbon at high temperatures SiO2 + 3C = SiC + 2 CO determine the limiting and excess reactant.

What conclusion can be drawn based on level of confidence : If university officials say that at least 70% of the voting student population supporting the fee increase, what conclusion can be drawn based on a 95% level of confidence?

Hypothesis testing at five percent level of significance : A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5.

How large a sample required to reduce standard deviation : he standard deviation of the sample proprortion is 5.3%. How large a sample (to the nearest person) would be required to reduce this standard deviation to 3.7%?

Sampling and x-bar distribution : A Company produces candy on a production line. When operating properly, the production process will produce an average of u=140 pounds of candy per hour with a standard deviation of o=20 pounds of candy per hour.

What is the energy difference between the two quantum states : Green light of a wavelength 516 nm is absorbed by an atomic gas. What is the energy difference between the two quantum states involved in the transition.

Waiters report for work to minimize total staff required : How many waiters and busboys should report for work at the start of each time period to minimize the total staff required for one day's operation.

What is the molar heat of vaporization of benzene : The vapor pressure of benzene (C6H6) is 120 torr at 27.0C, and its normal boiling point is 80.1C. What is the molar heat of vaporization of benzene.

User Account

All Pages