A software company is interested in improving customer satisfaction rate from the 68% currently claimed. The company sponsored a survey of 254 customers and found that 185 customers were satisfied. What is the test statistic z ?
Added by Nuria K.
Step 1
First, we need to find the sample proportion of satisfied customers, which is the number of satisfied customers divided by the total number of customers surveyed. $$\hat{p} = \frac{185}{254}$$ Show more…
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