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
katrin2010 [14]
3 years ago
9

Which of the following statements are not true in developing a confidence interval for the population mean?

Mathematics
1 answer:
frutty [35]3 years ago
8 0

Answer:

b) The width of the confidence interval becomes narrower when the sample mean increases.

Step-by-step explanation:

The confidence interval can be calculated as:

\bar{x} \pm \text{Test Statistic}\displaystyle\frac{\sigma}{\sqrt{n}}

a) The width of the confidence interval becomes wider as the confidence level increases.

The above statement is true as the confidence level increases the width increases as the absolute value of test statistic increases.

b) The width of the confidence interval becomes narrower when the sample mean increases.

The above statement is false. As the sample mean increases the width of the confidence interval increases.

c) The width of the confidence interval becomes narrower when the sample size n increases.

The above statement is true as the sample size increases the standard error decreases and the confidence interval become narrower.

You might be interested in
Ben the camel drinks tea ( so classy ). he drinks 350 liters of tea every 2 days
ziro4ka [17]

Ben drinks 1,050 liters of tea every 6 days.

<h3>How many liters of tea does Ben drink every 6 days?</h3>

Convert the object's dimensions into centimeters before performing the volume calculation in liters. Next, determine a shape's volume using the volume formula. The metric unit for measuring volume or capacity is the liter (or liter). Liters are a standard unit of measurement frequently used to measure liquids.

Divide Bens daily tea usage by the number daily tea usage rate.

Ben the camel drinks tea ( so classy ).

He drinks 350 liters of tea every 2 days.

liters (Volume) = usage times /days

350 × (6/2)

= 350 × 3

= 1,050 liters of tea does Ben drink every 6 days.

As a result, Ben drinks 1,050 liters of tea every 6 days.

#SPJ4

7 0
1 year ago
Multiply.
Elena-2011 [213]

Answer:

5/1.6 -2.5=<u>0.625</u>

3 0
3 years ago
Read 2 more answers
Mara had 7 cookies.She ate some Now she has 4 cookies. How many cookies did she eat? Draw a tape diagram
Westkost [7]
Mara ate 3 cookies because you subtract
3 0
3 years ago
Read 2 more answers
Find the center-radius form of the equation of the circle described. Then graph the circle. Center (0,0), radius 8
Pani-rosa [81]
If the center is (0, 0), then there is no side to side or up or down motion. The center is at the origin. The standard form of a circle is (x-h)^2 + (y-k)^2 = r^2. Your h and your k are both 0's, so just fill in and square the radius:
x^2 + y^2 = 64
7 0
3 years ago
Lolo typed 1,125 words in 15 minutes. Let w repersent the number of words each minute. If Lolo typed the same number of words ea
satela [25.4K]

Answer:

1125/15= 75

75 words per minute

3 0
3 years ago
Other questions:
  • How many solutions exist for the given equation? 0.75(x+40)=3(4x+1)-2
    10·2 answers
  • Which is the angle measure represented by 7.5 rotations clockwise?
    6·2 answers
  • Mike says that 3/3 of his a fraction model is shaded blue. Ryan says that 6/6 of the Same model is shaded blue are the two fract
    7·1 answer
  • Is 2x+7y=-12 linear or nonlinear
    7·2 answers
  • What would the equation be for this line?
    9·1 answer
  • Stem Leaf 1 1 means 1.1
    12·1 answer
  • Solve for x <br> 37 points for answer :)
    10·1 answer
  • Complete the following table for the function y = 3x
    9·1 answer
  • The cost to produce x units of wire is C=30x +500, while the revenue is R = 40x. Find the interval where the product will at lea
    10·1 answer
  • 10.8 Cesar Santiago recorded his housing expenses for the month of September as follows: $575.16 for mortgage payment, $23.70 fo
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!