Temp at midnight 5 °C & temp is decreasing at rate of 2°C per hour show on number line
1 answer:
You might be interested in
Answer:
B. 359
Step-by-step explanation:
Given that:
The margin of error (e) must be within 0.3 unit, The standard deviation (σ) = 2.9 and the the confidence level = 95% = 0.95
α = 1 =0.95 = 0.05
The z score of 0.025 corresponds to the z score of 0.0475 (0.5 - 0.025) which can be gotten from the normal probability table.
Therefore:
The formula for the margin of error is given by:
Therefore the smallest sample size (n) is 359