Instruction 8-7
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 8-7,this interval requires the use of the t distribution to obtain the confidence coefficient.

Question

Quizplus · Accepted Answer

The interval given in the question is already calculated and provided, so we don't need to determine which distribution was used to obtain it. However, based on the information given in the question, we can see that the sample size (120) is relatively large and the sample proportion (54/120 = 0.45) is not close to 0 or 1. These conditions suggest that we can use the normal distribution instead of the t distribution to obtain the confidence interval. Therefore, the correct answer is B, false.

Instruction 8-7 After an Extensive Advertising Campaign,the Manager of a Company Wants