See the attached picture:
The acute angle inside the triangle is 57 degrees. The one labeled “1” is 123 degrees.
Answer:
X= -10
Step-by-step explanation:
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

