Determining probability for normal distribution

Assignment Help Basic Statistics

Reference no: EM1392041

According to an IRS study, it takes a mean of 330 minutes for taxpayers to prepare, copy and electronically file a 1040 tax form. This distribution of times follows the normal distribution and the standard deviation is 80 minutes. A consumer watchdog agency selects a random sample of 40 taxpayers:

What is the standard error of the mean in this example

What is the likelihood the sample mean is greater than 320 minutes

What is the likelihood the sample mean is between 320 and 350 minutes

What is the likelihood the sample mean is greater than 350 minutes

Reference no: EM1392041

Questions Cloud

Write thesis statement to get response from audience : Write the outline in complete sentence form. Write a thesis statement (which may be spoken); a purpose statement, indicating response from audience you want to get.

A company is planning for its financing needs : A company is planning for its financing needs and uses the basic fixed-order quantity inventory model. Which of the following is the total cost (TC) of the inventory given an annual demand of 10,000

Determine sampling distribution of sample mean : A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is

Kk-3 system coding in grope technology : how to write code for any particle shape using KK-3 system coding in grope technology

Determining probability for normal distribution : According to an IRS study, it takes a mean of 330 minutes for taxpayers to prepare, copy and electronically file a 1040 tax form. This distribution of times follows the normal distribution and the standard deviation is 80 minutes.

Assuming the basic fixed-order quantity inventory model : Assuming the basic fixed-order quantity inventory model fits this situation and no safety stock is needed, which of the following is the reorder point (R)?

Question on normal distribution and z-score : The amounts of money requested on home loan applications at a particular bank follow the normal distribution, with a mean of $80,000 and a standard deviation of $24,000. A loan application is received during the day.

Forecast the rental and leasing revenue : Shown below are rental and leasing revenue ?gures for of?ce machinery and equipment in the United States over a seven-year period according to the U.S. Census Bureau. Use these data to run a linear regression and then forecast the rental and leasi..

Calculate in polar form the sequence components : Calculate in polar form the sequence components of unbalanced lineto-neutral voltages and calculate in polar form the phase currents corresponding to the sequence components

User Account

All Pages