Jacob is training for a marathon. His plan is to run the same distance for 3 days a week, then increase that distance by the sam
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Answer:
The correct option is A
Step-by-step explanation:
From the question we are told that
The population is
The level of significance is
The sample data is 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds
The Null hypothesis is
The Alternative hypothesis is
The critical value of the level of significance obtained from the normal distribution table is
Generally the sample mean is mathematically evaluated as
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The standard deviation is mathematically evaluated as
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Generally the test statistic is mathematically evaluated as
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Looking at the value of t and we see that
hence we fail to reject the null hypothesis
What this implies is that there is no sufficient evidence to state that the sample data show as significant increase in the average birth rate
The conclusion is that the mean is