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Dmitry_Shevchenko [17]
3 years ago
15

Lana and Jeff each randomly surveyed 15 students about their favorite types of movies. Are these samples representative of the s

chool population? Explain.
No, the samples are not large enough to be representative.
Yes, both samples are random, so they are representative.
No, the samples might include some of the same people, so they are not representative.
Yes, the samples do not include the same people, so they are representative.
Mathematics
2 answers:
Harman [31]3 years ago
5 0

I think it’s the second one.

Katyanochek1 [597]3 years ago
3 0

Answer:

last one is correct I believe

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Help i am in need of help
makvit [3.9K]

You can start by writing equations with the given information

1) You know that together, Mindy and Troy ate 9, so you can write

M+T=9

2) Then, it says that Mindy ate 3, so M=3

3) Troy ate 1/4 of the total cake, however we don't know what the amount of the total cake is, so we can represent it as x, T=1/4x

4) Plug in these equations into the first equation, 3+1/4x=9

5) Solve for X, Subtract 3 from both sides to get 1/4x=6

6) Divide 1/4 on both sides, x=(6÷1/4)

x=24

Hope this helped :)

8 0
3 years ago
Read 2 more answers
Solve the equation or formula for the variable specified.<br> df+7h=5
Eva8 [605]
Please include the specified variable to solve for in this equation.
5 0
3 years ago
16x – 8= 14x + 10<br> What’s x and why
Gala2k [10]

Answer:

I got 9

Step-by-step explanation:

I did subtraction and then added and then divided by 16x on both sides

8 0
3 years ago
8 times 4/3 times a = 8
stepladder [879]

Answer:

\frac{3}{4}

Step-by-step explanation:

8 \times  \frac{4}{3}  \times a = 8

8a = 8 \div  \frac{4}{3}

8a = 8 \div  \frac{4}{3}

8a = 6

a =  \frac{3}{4}

pm me if you want know more

8 0
3 years ago
Suppose you did a survey of male shoes size and the mean of that survey was size 10 with a standard deviation of 1.5. What is th
astra-53 [7]
Given:
Population mean,  μ = 10
Population standard deviation, σ = 1.5
Random variable, x = 11.

By definition, the z-score is
z = (x - μ)/σ
   = (11 - 10)/1.5
   = 0.667

Answer: 0.667
4 0
3 years ago
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