Answer:
Decision rule : The p-value < so the null hypothesis is rejected
The test statistics is
The manger will not be manager be satisfied that the company is not under-filling since the company is under-filling its cups
Step-by-step explanation:
From the question we are told that
The sample size is n = 16
The sample mean is
The standard deviation is
The null hypothesis is
The alternative hypothesis is
The level of significance is
Generally the test statistics is mathematically represented as
=>
=>
The p-value is obtained from the z-table the value is
Given that the we reject the null hypothesis
Hence there is sufficient evidence to support the concern of the quality control manager. and the manger will not be satisfied that since the test proof that the company is under-filling its cups