The amount of time it takes an ice cube to melt varies inversely to the air temperature. At 30 degrees Celsius, the ice will mel
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Answer:
The value is
Step-by-step explanation:
From the question we are told that
The null hypothesis is
The level of significance is
From the z table the critical value of considering the two tails of the normal curve( This is because this a two tailed test ) is
Hence the critical value is