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muminat
3 years ago
10

Mean and standard deviation of sample proportions

Mathematics
1 answer:
asambeis [7]3 years ago
8 0

Answer: D

Suppose that 35\%35%35, percent of students in a school can sing their national anthem correctly. The music teacher takes an SRS of 303030 students from the population of 750750750 students at the school and finds that 40\%40%40, percent of students sampled can sing their national anthem correctly. The teacher plans to take more samples like this.

Step-by-step explanation: Khan Academy Explanation

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3 years ago
A<br> is part of a line with one endpoint but goes on<br> forever in the other direction.
hjlf

Answer:

A ray

Step-by-step explanation:

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3 years ago
What is it called when writing a number by adding the value of each digit
Neko [114]

Answer:

Expanded form

Step-by-step explanation:

Expanded form or expanded notation is a system of writing numbers to see the value of each individual digits. The number are written in the form of tens, hundreds and ones etc. The expanded form of 44 will be 40 +4 where 4 is at ones place and 40 is at tens place.

5 0
3 years ago
Given the following image, find the angle of rotation and the number of times each figure can rotate.​
Dmitriy789 [7]

Rotated: The figure can be rotated  2  times.  Angle of Rotation:  180 ∘

7 0
2 years ago
A school is selling tickets to their Spring theater production. Student tickets cost $6 each and non-student tickets cost $9 eac
I am Lyosha [343]

Answer:

x=137

y=525-137

y=388

Step-by-step explanation:

Let the student tickets be x

Let the geral Admission tickets be y

x+y=525

y=525-x

4x+6y=2876 (subsitute for y)

4x+6(525-x)=2876

 

4x+3150-6x=2876

-2x=-274

x=137

y=525-137

y=388

Hence, about 137 childern tickets were sold and 388 gernal admission tickets were sold.

Paul.

3 0
3 years ago
Read 2 more answers
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