1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Maurinko [17]
2 years ago
8

Plz helpppp:Tammy conducted a survey to find the favorite subject of the students at her school. She asked 25 students from her

math class what their favorite subje
is. Tammy concludes that math is the favorite subject of the students at her school because 60% of the students in her class like math.
Use at least two sentences to explain why Tammy's sample may not be valid. Make sure to use facts to support your answer.
Mathematics
1 answer:
alexira [117]2 years ago
3 0

Answer: Tammy's sample may not be vaild because she surveyed the students only from her class and it is likely that other classes might not like the subject maths. She might get the accurate results by surveying a larger number of people in the school instead of just her class.

You might be interested in
Barb is making a bead necklace she strings won't Whitebead then three blue beads that one white bead and Soren write the numbers
storchak [24]
Can you repeat the question please?
4 0
2 years ago
A university offers 3 calculus classes: Math 2A, 2B and 2C. In both parts, you are given data about a group of students who have
ankoles [38]

Answer:

4 students

Step-by-step explanation:

The total number of students is given by:

|A|+|B|+|C|-|A\cap B|-|A\cap C|-|B\cap C| + |A\cap B \cap C| = N

Where N is the total number of students, A is the number of students that have taken Math 2A, B is the number of students that have taken Math 2B, and C is the number of students that have taken Math 2C:

|A|+|B|+|C|-|A\cap B|-|A\cap C|-|B\cap C| + |A\cap B \cap C| = N\\51+80+70-15-20-13 +  |A\cap B \cap C|  = 157\\ |A\cap B \cap C| =4

4 students in Group A have taken all three classes.

*The number of students that have taken two classes has be subtracted so those students do not get counted twice

4 0
3 years ago
Suppose that you wanted to predict the price of a house based on where the house was located (northeast, northwest, southeast, o
morpeh [17]

Answer: b. 3

Step-by-step explanation:

We know that , the indicator variable is a dummy variable in regression analysis which is used to denote either presence ( by 1 ) or absence ( by 0 ) of a nominal variable that can be responsible for the change in output.

Number of indicator variables = (all levels in the original variable)-1

Here , the given categories as per the location are northeast, northwest, southeast, or southwest.

i.e. all levels in the original variable = 4

Then, the umber of indicator variables we need = 4-1 =3

Hence, we need 3 indicator variables.

Thus , the correct answer is b. 3.

4 0
3 years ago
Find the difference between the square of 18 and the square of 9
NemiM [27]

Answer:

18 x 9 = 162

Step-by-step explanation:

7 0
2 years ago
The perimeter of the triangle is 34 cm. Solve for x.
Musya8 [376]
5x-2+x-3+x-3 = 34
7x-8 = 34
7x/7 = 42/7
x = 6
3 0
2 years ago
Read 2 more answers
Other questions:
  • Please help answer this question above
    14·2 answers
  • 30 POINTS!!!
    12·2 answers
  • The vertex of parabola is (2,-2) Another point on the parabola is (5,7). find another point on the parabola.
    8·1 answer
  • Whats the answer for (9x - 6)
    5·1 answer
  • 8/18 write fraction as decimal. Use bar notation if necessary
    11·1 answer
  • Is z = 23 a solution to 23/z =1
    9·1 answer
  • Solve for X when......................
    12·1 answer
  • Non-examples of least Common Multiple
    6·2 answers
  • Explain get 100 points
    10·2 answers
  • package of 11 wristbands costs $405.94. At this rate, what is the cost of 1 wristband in dollars and cents?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!