Over a period of years a toothpaste has received a mean

Assignment Help Econometrics

Reference no: EM13377999

Over a period of years, a toothpaste has received a mean rating of 5.9, on a 7-point scale, for overall customer satisfaction with the product. Because of a minor unadvertised change in the product, there is concern that the customer satisfaction may have changed. Suppose the satisfaction ratings from a sample of 60 customers have a mean of 5.60 and a standard deviation of 0.87. Do these data indicate that the mean satisfaction rating is different from 5.9? Test with alpha = 0.05 significance.

Reference no: EM13377999

Questions Cloud

Health administration question-answer each of the : health administration question-answer each of the questions below note that each question is of equal weight and that

1 assume you are a policymaker in washington dc : 1. assume you are a policymaker in washington dc. lobbyists for the preschoolers of america have put pressure on

Youve recently learned that the company where you work is : youve recently learned that the company where you work is being sold for 380000. the companys income statement

Sales at morton bakery over the past 10 weeks are given in : sales at morton bakery over the past 10 weeks are given in the table belowweekweek tnbspnbspnbspnbspnbspnbspnbspnbsp

Over a period of years a toothpaste has received a mean : over a period of years a toothpaste has received a mean rating of 5.9 on a 7-point scale for overall customer

New horizons airlines wants to forecast the mean number of : new horizons airlines wants to forecast the mean number of unoccupied seats per flight to germany next year. to

The weights of a population of parts made by a certain : the weights of a population of parts made by a certain machine are normally distributed with a mean of ten pounds and a

Tennessee just instituted a state lottery the initial : tennessee just instituted a state lottery. the initial jackpot is 100000. if the first week yields no winners the

Youve recently learned that the company where you work is : youve recently learned that the company where you work is being sold for 380000. the companys income statement

User Account

All Pages