Russian Walks to school Every day. Which one of the following is the best describe how long time russian takes to walk to school
2 answers:
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Answer: a) 0.74, b) (0.70, 0.778)
Step-by-step explanation:
Since we have given that
Total number of chemical companies n = 500
Number of companies certified = 370
So,
At 95% level of confidence, z = 1.96
So, interval would be
Hence, a) 0.74, b) (0.70, 0.778)