The actual distance from Pittsburgh, PA to Philadelphia PA is 304 miles. On a map the distance is 14 inches. Complete the scale
2 answers:
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Complete Question
An F5 tornado is classified as having mean wind speeds greater than 261 mph. In an effort to classify a recent tornado, 20 wind speed measurements were randomly selected from within the path of the tornado. Suppose the mean wind speed for this tornado really is greater than 261 mph with a sample standard Deviation 41.09 mph. Based on the data, if we fined little to no evidence against the null hypothesis that the mean wind speed is 261 mph, we have made _______________.
Answer:
Step-by-step explanation:
From the question we are told that:
Sample size
Population mean
Sample mean
Sample standard deviation
Generally the equation t test statistics is mathematically given by
Therefore
Pvalue from table is
According to the described situation, it is found that:
1. ,
.
2. Since the interval does not include 32, hence you can reject the null hypothesis and there is enough evidence to conclude that the actual mean flight time of all balloons differ from the advertised 32 hours.
<h3>What are the hypothesis tested?</h3>At the null hypothesis, it is tested if the mean flight time is of 32 minutes, that is:
At the alternative hypothesis, it is tested if it differs of 32 minutes, hence:
The confidence interval is of (28.5, 31.4), that is, is does not include 32, hence you can reject the null hypothesis and there is enough evidence to conclude that the actual mean flight time of all balloons differ from the advertised 32 hours.
More can be learned about an hypothesis test at brainly.com/question/26454209