A test contains 35 questions worth a total of 100 points. There are seven-point questions and two-point questions. How many two-
2 answers:
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Answer: The open interval would be (31.4,42.5).
Step-by-step explanation:
Since we have given that
mean = 36.9
Standard deviation = 16.5
n = 48
At 98% confidence interval, z = 2.33
So, Interval would be
Hence, the open interval would be (31.4,42.5).