On a coordinate plane, a rectangle has points (1, 2), (1, negative 2), (negative 4, negative 2), (negative 4, 2).
2 answers:
You might be interested in
Complete Question
Answer:
a
b
Step-by-step explanation:
From the question we are told that
The sample size is n = 60
The first sample mean is
The second sample mean is
The first variance is
The first variance is
Given that the confidence level is 95% then the level of significance is 5% = 0.05
Generally from the normal distribution table the critical value of is
Generally the first standard deviation is
=>
=>
Generally the second standard deviation is
=>
=>
Generally the first standard error is
Generally the second standard error is
Generally the standard error of the difference between their mean scores is mathematically represented as
=>
=>
Generally 95% confidence interval is mathematically represented as
=>
=>