Answer:
The lower limit is 75.04
The upper limit is 78.96
Step-by-step explanation:
From the question we are told that
The sample size is 
The sample mean is 
The standard deviation is 
Given that the confidence level is 95% then the level of significance is mathematically represented as
The critical value for 
obtained from the normal distribution table is
Generally the margin of error is mathematically represented as
=> 
=> 
The 95% confidence interval is mathematically represented as
=> 
=> 
Answer:
It should be the last one, She made a sign error when multiplying.
Answer:
1 - expressions that are equal in value even though they are written in different ways, 2 - a(b + c) = ab + ac, or a(b + c) = ab - ac, 3 - a number that divides evenly into another number; a number multiplied to get a product, 4 - a single term; multiple terms connected by an addition or subtraction sign, 5 - a mathematical statement that shows two expressions are equal using an equal sign, 6 - an expression that uses variables to state a rule, 7 - a relation in which for any given input value, there is only one output value.
Answer:
alalalalalalalalaa
Step-by-step explanation:
Answer: 1.) √121= 11
Step-by-step explanation:
11•11=121
