Answer:
The confidence interval is
Step-by-step explanation:
From the question we are told
The sample proportion
The margin of error is
The confidence interval for p is mathematically represented as
=>
=>
How many 34 foot pieces of string can be cut from a 5 foot piece of string? *plz answer ASAP
1 answer:
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2(x + 4) =
x + 4 which is the second option is the equivalent expression.
Explanation:
First, we need to calculate the value of two-fifths of x. It means 2 portions out of the five portions of x which equates to x.
Now we calculate the values of the two expresssions on the LHS.
1) 2 (two-fifths x + 2) = 2 (x + 2) =
x + 4.
2) (two-fifths x + 4) = 2(x + 4) =
x + 8.
Now we determine values of the four expressions on the RHS.
1) Two and two-fifths x + 1 = 2x + 1
2) Four-fifths x + 4 = x + 4
3) Four-fifths x + 2 = x + 2
4) Two and two-fifths x + 8 = 2x + 8.
Out of the various LHS and RHS values, the LHS value and
RHS value is the same. So option 2 is the answer.
Answer:
b. The sum of the squared deviations between each group mean and the mean across all groups
Step-by-step explanation:
Previous concepts
Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".
The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"
Solution to the problem
If we assume that we have groups and on each group from
we have
individuals on each group we can define the following formulas of variation:
And we have this property
As we can see the sum of squares between represent the sum of squared deviations between each group mean and the mean across all groups.
So then the best option is:
b. The sum of the squared deviations between each group mean and the mean across all groups