Confidence interval by using normal distribution

Reference no: EM1397510

Let μ be the hourly wage (excluding tips) for workers who provide hotel room service in a large city. A random sample of a number (more than 30) of such workers yielded a 95% confidence interval for μ of $8.46 to $9.86 using the normal distribution with a known population standard deviation.

a) Find the value of x for this sample.

b.Find a 99% confidence interval for μ based on this sample.

Reference no: EM1397510

Questions Cloud

Find six surviving major groups of amniotes : What are the six surviving major groups of amniotes? How does an Indiana turtle survive the winter at the bottom of a pond?

Targets of security breaches can be larger-smaller companies : Study three recent information security breaches. Do the key targets appear to be larger or smaller companies? Is there particular industry which appears predominately targeted?

Describe the market outcome in graph : Now draw another graph to display how the change in the price of Japanese cars affects the price of American-made cars in the United States. Describe the market outcome in each graph and the link between the two graphs

Find out molecular formula of molar mass : Garlic smell is easily noticable due to the compound that is responsible for this is Allicin , when we analysed this compaound and find out molecular formula of molar mass= 486 grams

Confidence interval by using normal distribution : Let μ be the hourly wage (excluding tips) for workers who provide hotel room service in a large city. A random sample of a number (more than 30) of such workers yielded a 95% confidence interval for μ of $8.46 to $9.86 using the normal distributio..

Cephalic and caudal stimulation of the vagus nerve : There are two documents for lab procedures. You should start with "Rat CV Part 1", and then move on to "Soda Lime and Rebreathing".

An organization has a recruitment strategy : An organization has a recruitment strategy in which it over hires by 10% the number of employees it will actually want in any job category in order to ensure it meets its hiring needs

Find out mass of 2-butanol : Calculate the numbers of moles of 2-butanol that needed to dissolved in ethenol(125gms) just to form 12 m 2 butanol soln also find out mass of 2-butanol ?

Describe political opinion polls development : Numerous articles published in newspapers, magazines etc present statistical data as well as list margins of error for instance reports on political opinion polls development or decline of the housing markets manufacturing sectors etc.).

User Account

All Pages