The average price x is determined to be 120 per liter what

Reference no: EM13471298

The average gasoline price (µ) of one of the major oil companies in Europe has been $1.25 per liter with a population standard deviation of the population (σ) of $0.14. Recently, the company has undertaken several efficiency measures in order to reduce prices. Management is interested in determining whether their efficiency measures have actually reduced prices. A random sample of 49 of their gas stations is selected and the average price (x¯) is determined to be $1.20 per liter. What formula would you use to determine whether the new efficiency measures were effective? (a = 0.05)

F = s12 ÷ s22

t = (x¯ - μx-bar) ÷ s/√n

z = (x¯ - μx-bar) ÷ σ/√n

y = b0 + b1x

Reference no: EM13471298

Questions Cloud

Use the empirical rule to test for normality see the : using the telephone numbers listed in your local directory as your population randomly obtain 20 samples of size 3.

Use the ruler in your reference materials to mark necessary : ms.smith is planning her classroom. she knows she has approximately 12 linear meters of available wall space. she likes

Assume for a moment two different images imagine 1 dr : imagine for a moment two different images imagine 1 dr. hubbard giving a lecture last wednesday and imagine 2 the use

Define the term domestic false flag operations and the term : define the term domestic false flag operations and the term domestic sting operations. what is the difference between a

The average price x is determined to be 120 per liter what : the average gasoline price micro of one of the major oil companies in europe has been 1.25 per liter with a population

Directions write a three-page research paper not including : directions write a three-page research paper not including the cover and reference pages that addresses several

Retributive justice is a philosophy that the punishment : answer the questions below. your written responses should be at least one half of one page in length and should utilize

Determine the name of probability distribution of x obtain : the phone lines to an airline reservation system are occupied 40 of the time. assume theevents that the lines are

Edwin went to the library to learn more regarding a : edwin went to the library to learn more about a particular theory which attempts to explain the types of communication

User Account

All Pages