The average time for 100-meter race that Usain Bolt used is 9.6 seconds on average. He wants to test whether his speed has decreased or not. His speed was tested for 16 times, and the average time is 9.7 seconds. Assume the population standard deviation is 0.1 second. At a 5% significance level, the decision is to .

At a 5% significance level we reject the Null hypothesis

Step-by-step explanation:

From the question we are told that:

Distance

Mean

Sample size

Sample mean

Standard deviation

significance level

Generally the Hypothesis is mathematically given by

Generally the equation for t test statistics is mathematically given by

Therefore P-Value from table

Therefore

At a 5% significance level we reject the Null hypothesis

(x, y)→(x − 8, y − 7)

step-by-step explanation:

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