Answer:
b=1
Step-by-step explanation:
<u>First, let's regroup, terms,</u>
<u>Add 11 to both sides,</u>
<u>Simplify, 7+11 = 18,</u>
<u>Now, divide both sides by 3,</u>
<u>Simplify, 18/3 = 6,</u>
Subtract 5 from both sides,
Hope it helps! :)
Answer:
4
Step-by-step explanation:
The z-score is calculated by the following formula
z=(x-μ)/σ
where
μ=Population mean
σ=Population standard deviation
If the z-score for a specific sample mean is discussed then z-score is computed as
z=xbar-μ/σxbar.
where
μ=Population mean
σxbar=Sample standard deviation
As the population mean and mean of sampling distribution of mean are equal so, μ is used in above equation.
Now, the z-score is given
1.5=xbar-μ/σxbar
σxbar=xbar-μ/1.5.
Also we know that z-score corresponds to a score that is 6 points above mean which means that xbar-μ=6.
σxbar=6/1.5
σxbar=4.
Thus, the required sample standard deviation is 4.
Answer:
84
Step-by-step explanation:
First you multiply 2 and 7
Ans 14
Then you multiply 14 and 6
Ans 84
Answer: (C)
<u>Solution:</u>
Jack bought 3 bars for $4.26 thus the cost of each bar can be defined as:
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Answer:
can you comment the real question because this is just gibrish
Step-by-step explanation: