Instruction 8-14
After an extensive advertising campaign, the manager of a company wants to estimate the proportion of potential customers that recognise a new product. She samples 120 potential consumers and finds that 54 recognise this product. She uses this sample information to obtain a 95% confidence interval that goes from 0.36 to 0.54.
-Referring to Instruction 8-14,this interval requires the use of the t distribution to obtain the confidence coefficient.

Question

Quizplus · Accepted Answer

This interval does not require the use of the t distribution, as the sample size is sufficiently large (n=120) to use the standard normal distribution for obtaining the confidence coefficient.

Instruction 8-14 After an Extensive Advertising Campaign, the Manager of a Company