A tropical storm has been moving at 15 miles per hour for the past two days. Bess recorded that the storm moved 135 miles yester
1 answer:
Answer:
Bess has been keeping track of the storm for 14 hours.
Step-by-step explanation:
The tropical storm has been moving at 15 miles per hour.
Bess recorded that the storm moved 135 miles yesterday and 75 miles today. Total distance covered by storm is
The relationship between distance speed and time is defined as
Therefore, Bess has been keeping track of the storm for 14 hours.
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Answer: 95% confidence interval for the difference between the proportions would be (1.31, 1.39).
Step-by-step explanation:
Since we have given that
Number of alluvial wells = 349
Number of quaternary wells = 143
Number of alluvial wells that had concentrations above 0.1 = 182
Number of quaternary wells that had concentrations above 0.1 = 112
Average of alluvial wells = 0.27
Standard deviation = 0.4
Average of quaternary wells = 1.62
Standard deviation =1.70
So, 95% confidence interval gives
alpha = 5% level of significance.
So, 95% confidence interval becomes,
Hence, 95% confidence interval for the difference between the proportions would be (1.31, 1.39).