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Simora [160]
2 years ago
9

A sample of ????=25 diners at a local restaurant had a mean lunch bill of $16 with a standard deviation of ????=$4 . We obtain a

95% confidence interval as (14.43,17.57) . Which action will not reduce the margin of error?
Mathematics
1 answer:
zaharov [31]2 years ago
6 0

Answer:

"Decreasing the sample size."

Step-by-step explanation:

The margin of error is :

ME=z\times \frac{\sigma }{\sqrt{n}}

Therefore, as n decreases, margin of error increases.

In the question we are asked " Which action will not reduce the margin of error."

Therefore, the correct option for which action will not reduce the margin of error is "Decreasing the sample size."

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Please help!<br> f(x)=x^2. What is g(x)
lorasvet [3.4K]

Answer:

D

Step-by-step explanation:

The standard form for a parabola is ax^2+bx+c. In this equation, b=0 and c=0. For g(x), you would plug in your y-value that was given (which is 4) and you would plug in your x-value that that given (which is 1). Use PEMDAS. The correct answer is the one that is true.

A. g(x) = (4x)^2

4 = (4(1))^2

4 = 16. (not true)

B. g(x) = 1/4 x^2

4 = 1/4 (1)^2

4 = 1/4 (not true)

C. g(x) = 16x^2

4 = 16(1)^2

4 = 16 (not true)

D. g(x) = 4x^2

4 = 4(1)^2

4 = 4. (true --> correct answer)

4 0
2 years ago
If PQ = 6x - q and PR = 15x - 29, then QR =?
Pepsi [2]
\begin{gathered} PQ=6x-1 \\ PR=15x-29 \\ QR=? \\ QR=PR-PQ \\ QR=15x-29-(6x-1) \\ QR=15x-29-6x+1 \\ QR=9x-28 \\ 2PQ=PR \\ 2(6x-1)=15x-29 \\ 12x-2=15x-29 \\ 12x-15x=-29+2 \\ -3x=-27 \\ x=\frac{27}{3} \\ x=9 \\ QR=9(9)-28 \\ QR=81-28 \\ QR=53 \\ \text{The value of QR is 53} \end{gathered}

5 0
1 year ago
Y 2 - x +4<br> x+y&lt;0<br><br> someone plz help me
olga nikolaevna [1]
Are these two separate questions?
8 0
3 years ago
PLZ HELP I NEED MY GRADES UPPPPP!!
Damm [24]

Answer:

it is at -2 degrees

Step-by-step explanation:

sorry for being late but if anyone in the future sees this hears the answer!

have a good one!

6 0
2 years ago
Read 2 more answers
Can some one plz help I don't know how to do this
prohojiy [21]
This is a hard one so what you do is make a number line and put -5x, -9, and -24 hope this helps
4 0
3 years ago
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