Answer:
x = 7
Step-by-step explanation:
9 get subtracted on both sides and then 16-9 is 7
The value of the text statistic. F is given as : 0.742 See explanation below.
<h3>What is a test statistic?</h3>
A test statistic is a numerical value determined by a statistical test.
It quantifies the distance between your observed data and the null hypothesis of no link between variables or no difference between sample groups.
<h3>What is the solution to the answer above?</h3>
Test Statistic F is given by:
= σ²₁/σ²₂
= 0.93²/1.08²
= (0.93/1.08)²
= 0.8611²
= 0.742
Learn more about Test Statistic at;
brainly.com/question/6589776
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Answer:
35-7/ 9-2
28/7
4
Step-by-step explanation:
We need to find out how many adults must the brand manager survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage.
From the given data we know that our confidence level is 90%. From Standard Normal Table we know that the critical level at 90% confidence level is 1.645. In other words, 
.
We also know that E=5% or E=0.05
Also, since, 
is not given, we will assume that =0.5. This is because, the formula that we use will have 
in the expression and that will be maximum only when =0.5. (For any other value of , we will get a value less than 0.25. For example if, is 0.4, then 
and thus, 
.).
We will now use the formula
We will now substitute all the data that we have and we will get
which can approximated to n=271.
So, the brand manager needs a sample size of 271
I believe that A and D would be the correct answer. Because both are 30,60,90 triangles and would be congruent. The other 2 triangles only have 1 angle and their side measures are at two different places meaning they cannot be congruent.
