The function f(x) is graphed on the coordinate plane. What is f(−4) ?
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Answer: The number of days would be 7 days.
Step-by-step explanation:
Since we have given that
Variance = 30°
Standard deviation = √30 = 5.47
Mean = 4°
At 95% confidence, z = 1.96
So, number of days that the researcher select to measure the temperature would be
Hence, the number of days would be 7 days.