A Company Hopes to Improve Its Engines, Setting a Goal $3 \%$

Multiple Choice

A company hopes to improve its engines, setting a goal of no more than $3 \%$ of customers using their warranty on defective engine parts. A random survey of 1400 customers found only 30 with complaints. Create a $95 \%$ confidence interval for the true level of warranty users among all customers.

A) Based on the data, we are $95 \%$ confident the proportion of warranty users is between $2.0 \%$ and $2.9 \%$ . Therefore, the company has met its goal.
B) Based on the data, we are $95 \%$ confident the proportion of warranty users is between $1.4 \%$ and $2.9 \%$ . Therefore, the company has met its goal.
C) Based on the data, we are $95 \%$ confident the proportion of warranty users is between $1.4 \%$ and $3.8 \%$ . Therefore, the company has not met its goal.
D) Based on the data, we are $95 \%$ confident the proportion of warranty users is between $1 \%$ and $3 \%$ . Therefore, the company has met its goal.
E) Based on the data, we are $95 \%$ confident the proportion of warranty users is between $0 \%$ and $2.9 \%$ . Therefore, the company has met its goal.