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Answer:
The 95% confidence interval for the true mean speed of thunderstorms is [10.712, 13.688].
Step-by-step explanation:
Given information:
Sample size = 10
Sample mean = 12.2 mph
Standard deviation = 2.4
Confidence interval = 95%
At confidence interval 95% then z-score is 1.96.
The 95% confidence interval for the true mean speed of thunderstorms is
Where, is sample mean, z* is z score at 95% confidence interval, s is standard deviation of sample and n is sample size.
Therefore the 95% confidence interval for the true mean speed of thunderstorms is [10.712, 13.688].
I<span> found the graph choices: </span>
<span>Given:</span>
8 rose bouquets
6 daffodil bouquets
total of 14 bouquets
enough flowers left to make maximum of 20 bouquets.
x = additional rose bouquets
y = additional daffodil bouquets
20 maximum bouquets - 14 made bouquets = 6 additional bouquets
x + y = 6
y = 6 - x
x = 6 - y
If x = 0 then y = 6
If x = 6 then y = 0
If x = 4 then y = 2
If x = 2 then y = 4
Pls. see attachment for the correct graph.
<span>Given:</span>
8 rose bouquets
6 daffodil bouquets
total of 14 bouquets
enough flowers left to make maximum of 20 bouquets.
x = additional rose bouquets
y = additional daffodil bouquets
20 maximum bouquets - 14 made bouquets = 6 additional bouquets
x + y = 6
y = 6 - x
x = 6 - y
If x = 0 then y = 6
If x = 6 then y = 0
If x = 4 then y = 2
If x = 2 then y = 4
Pls. see attachment for the correct graph.