Answer:
D
Step-by-step explanation:
See attached image.
Answer:
Yes, we can expect the given result
Step-by-step explanation:
The population proportion P = 0.60
the 95% confidence interval is ( 0.56, 0.76)
The 95% confidence that the true population proportion lies between the interval ( 0.56, 0.76)
Only 5% of 20 random samples i.e only 1 sample is not contain in the population proportion.
Answer:
The decision rule is
Fail to reject the null hypothesis
The conclusion is
There is no sufficient evidence to show that the designer's claim of a better shoe is supported by the trial results.
Step-by-step explanation:
From the question we are told that
The population mean is 
The sample size is n = 25
The sample mean is 
The standard deviation is 
Let assume the level of significance of this test is 
The null hypothesis is 
The alternative hypothesis is 
Generally the degree of freedom is mathematically represented as

=> 
=> 
Generally the test statistics is mathematically represented as

=> 
=> 
Generally from the student t distribution table the probability of obtaining
to the right of the curve at a degree of freedom of
is

From the value obtained we see that
hence
The decision rule is
Fail to reject the null hypothesis
The conclusion is
There is no sufficient evidence to show that the designer's claim of a better shoe is supported by the trial results.
Answer:
25.1325
Step-by-step explanation:
16/2= radius of 8. pi*r^2 for 8 is 201.06. 201.06/8(slices) = 25.1325