How long will it take 4 workers to complete a task, given that it takes 10 days for 6 workers to complete the same task?
2 answers:
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Answer:
The test statistic is
Step-by-step explanation:
From the question we are told that
The population mean is
The The level of significance is
The sample size is n = 18
The null hypothesis is
The alternative hypothesis is
The sample mean is
The standard deviation is
Generally the test statistics is mathematically represented as
substituting values
Check picture below, radius = r = 15, thus
