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
alexandr402 [8]
2 years ago
9

A school has two kindergarten classes. There are 21 children in Ms. Toodle's kindergarten class. Of these, 17 are "pre-readers"

children on the verge of reading. There are 19 children in Mr. Grimace's kindergarten class. Of these, 13 are pre-readers. Using the plus four confidence interval method, a 90% confidence interval for the difference in proportions of children in these classes that are pre-readers is -0.104 to 0.336.
1. Which of the following statements is correct?
a. This confidence interval is not reliable because the samples are so small.
b. This confidence interval is of no use because it contains 0, the value of no difference between classes.
c. This confidence interal is reasonable because the sample sizes are both at least 5.
d. This confidence interval is not reliable because these samples cannot be viewed as simple random samples taken from a larger population
Mathematics
1 answer:
pav-90 [236]2 years ago
3 0

Answer:

The correct answer is option (d).

Step-by-step explanation:

From the given example, the statement that is correct is, this confidence interval is not reliable because these samples cannot be viewed as simple random samples taken from a larger population.

This is because, In this scenario or setup, all the students are already part of the data. This is not a sample from a l population that is larger, but probably, the population itself.

You might be interested in
6n-3>-18 please show work
maxonik [38]
First off, add 3 to both sides of the equation.
6n - 3 + 3 > -18 + 3
Then, your equation should look like this: 6n > -15
Next, divide both sides by 6.
6n/6 > -15/6
Your answer is n > -5/2
6 0
3 years ago
Read 2 more answers
Someone help lol. bsbajajzisksnzjiskakzkz
Mazyrski [523]

Answer:

Nah I have grids

Step-by-step explanation:

6 0
2 years ago
Find the value of x. 55
Katena32 [7]

Answer:

90 - 55 = 35

its 35

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Can someone pls help me out
r-ruslan [8.4K]

Answer:

405 are not expected to be alive in the next year

7 0
3 years ago
What is 7.04 trillion in scientific notation​
slega [8]

Answer:

7.04 trillion = 7.04 x 10¹²

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • 1. Round to the nearest hundred, and then subtract 4,623-3,892
    12·1 answer
  • 4 and 5 please help :)
    15·2 answers
  • Pool is 25ft long and 15 ft wide and the width of the walkway is to be the same all around the pool. How wide do I make the walk
    14·1 answer
  • True false a line parallel to one side of a triangle and intersects the other two sides divides the other two sides proportional
    10·2 answers
  • What is the probability of spinning a 3 on a spinner numbered 1-5 and 2 on a spinner numbered 1-3?
    10·1 answer
  • Comparing symbols in a picture graph
    15·2 answers
  • PLZZZ HELPP 3+7 - 1/2 is an example of A. a numerical equation B. an algebraic equation C. a numerical expression D. an algebrai
    11·1 answer
  • A ramp 60 m long rises a vertical distance of 8m find the measure of the angle of elevation to the nearest degree
    13·1 answer
  • Round 56.14 to the nearest tenth
    14·1 answer
  • Please help!<br> maths functions
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!