Confidence interval for the true population of people

Reference no: EM1394710

A grocery store takes a random sample of 200 customers. The average check-out time is 4 minutes with a standard deviation of two minutes.

1) A random sample of 244 observations has a mean of 10, a median of 12 and a mode of 33. The population deviation is known to equal 2.8. the 95.44% confidence interval for the population mean is?

2) The following random sample was collected: 22 33 44 6 The 80% confidence interval for the mean is?

3) A random sample of 200 people was taken. Sixty percent of the people favor President Obama. The 95% confidence interval for the true population of people who favor Obama is?

Reference no: EM1394710

Questions Cloud

What is the equation of budget line : What is the equation of his budget line and sketch the budget line and two possible indifference curves that Herbert

Devastating neurological disease from lack of normal enzyme : Tay Sachs disease is inherited as an autosomal recessive. It is a devastating neurological disease that results from the lack of a normal enzyme "A" whose job is to metabolize lipids that are found in brain cells.

Examine the corporate governance of audits : Examine the corporate governance of audits including the professional, regulatory, and corporate managerial requirements. Use technology and information resources to research issues in auditing.

Why the ph of the solution is slowly increased : Calculate the number of 5.70m NaOH must be added to 666 ml of a buffer that contains .0205m C2H4O2 and .0260m C2H3NaO2 to increase the ph to 5.75.

Confidence interval for the true population of people : A random sample of 200 people was taken. Sixty percent of the people favor President Obama. The 95% confidence interval for the true population of people who favor Obama is?

How science is frequently perceived as objective : Science is frequently perceived as "objective," while politics, arts, and religion have been perceived as "subjective." What does this actually mean to us?

Determine the boiling point of an aqueous solution : Determine the boiling point of a 1.5m aqueous solution of fructose.

Public economics - taxation : Public Economics - Taxation, What if Matt had put his money in a Roth IRA instead and tax rate Matt faces in this problem will be the same in all years from now through retirement unless stated.

Explain debited to owner''s capital and credited to cash : A debit posting to Advertising Expense of $300 was omitted. A $3,200 cash drawing by the owner was debited to Owner's Capital and credited to Cash

User Account

All Pages