It is also a quadrilateral
Complete Question
It has been found from experience that the mean breaking strength of a particular brand of thread is 9.72 oz with a standard deviation of 1.4 oz. Recently a sample of 36 pieces of thread showed a mean breaking strength of 8.93 oz. Can one conclude at a significance level of (a) 0.05, (b) 0.01 that the thread has become inferior?
Answer:
At both
and
the conclusion is that the thread has become inferior
Step-by-step explanation:
From the question we are told that
The population mean is 
The standard deviation is 
The sample size is n = 36
The sample mean is 
The null hypothesis is 
The alternative hypothesis is 
Generally the test statistics is mathematically represented as

=> 
=> 
So
The p-value obtained from the z- table is

So at 

So we reject the null hypothesis,hence we conclude that the thread has become inferior
So at 

So we reject the null hypothesis,hence we conclude that the thread has become inferior
Answer:
5.5
Step-by-step explanation:
Median = middle number of number set
Arrange from least to greatest:
1 2 3 4 5 6 7 8 9 10
Middle numbers: 5 and 6
Find avergae of 5 and 6: (5+6)/2 = 5.5
Thus, median = 5.5
Answer:
I dont know?
Step-by-step explanation:
Not math?