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
Margaret [11]
2 years ago
6

Child Health and Development Studies (CHDS) has been collecting data about expectant mothers in Oakland, CA since 1959. One of t

he measurements taken by CHDS is the age of first time expectant mothers. Suppose that CHDS finds the average age for a first time mother is 26 years old. Suppose also that, in 2015, a random sample of 50 expectant mothers have mean age of 26.5 years old, with a standard deviation of 1.9 years. At the 5% significance level, we conduct a one-sided T-test to see if the mean age in 2015 is significantly greater than 26 years old. Statistical software tells us that the p-value = 0.034.
Which of the following is the most appropriate conclusion?

A.) There is a 3.4% chance that a random sample of 50 expectant mothers will have a mean age of 26.5 years old or greater if the mean age for a first time mother is 26 years old.

B.) There is a 3.4% chance that mean age for all expectant mothers is 26 years old in 2015.

C.) There is a 3.4% chance that mean age for all expectant mothers is 26.5 years old in 2015.

D.) There is 3.4% chance that the population of expectant mothers will have a mean age of 26.5 years old or greater in 2015 if the mean age for all expectant mothers was 26 years old in 1959.
Mathematics
1 answer:
liraira [26]2 years ago
3 0

Answer:

<em>A.) There is a 3.4% chance that a random sample of 50 expectant mothers will have a mean age of 26.5 years old or greater if the mean age for a first time mother is 26 years old.</em>

Step-by-step explanation:

The mean age for a first time mother is assumed 26 years old (null hypothesis) and <em>p-value</em> of the sample mean (26.5 years ) is found as 0.034.

This is the probability of having first time mother mean age 26.5 or greater <em>under the assumption of null hypothesis. </em>

You might be interested in
Suppose f(x) is a function such that if p
Sauron [17]

Answer:

I think in a function of f(x) P is also another variable like P is the price then Q is the quantity.

Step-by-step explanation:

4 0
3 years ago
What’s 4 times 15 divided by 8 plus 20 minus 5 divided by 3
jonny [76]
The answer is 25.83333333

Hope this helps!
4 0
3 years ago
I will mark brainliest
matrenka [14]
A: 2,5
B: 3,1
C: -2,4



Explanation:


When you’re moving right and up you would add however many numbers you moved up to the original points because going right on a graph makes the X a larger number, and going up makes it larger.
5 0
3 years ago
What’s the slop it’s on my final
Studentka2010 [4]
The slope is 1

All you need to do is look on the graph and count how many times you go up or down and to the side and then divide. Super simple!
6 0
2 years ago
Read 2 more answers
10 + 10 =20<br> the answer is 20
Mice21 [21]

Answer:

YEP! YOURE CORRECT!

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Fiona ran 6 laps around a track each lap was 500 meters how far did Fiona run? Circle all that apply
    15·2 answers
  • Which equation shows how the relationship between the circumference and the diameter of a circle is equivalent to π?
    8·1 answer
  • Find sin angle∠ A. <br> A. 3/5<br> B. 4/5<br> C. 1<br> D. 5/4
    6·1 answer
  • Which of these numbers are 11 units from 0 on the number line? A 0 B+11 C-11
    5·2 answers
  • X - 6y = 4 and 3.x – 18<br> How many solutions
    6·1 answer
  • What would the answer be for this equation? 3a^3b^2x2a^2b^5
    7·2 answers
  • Plz help me really really fast this is my last question to work on
    9·1 answer
  • WILL GIVE BRAINLIEST!!!!!!!<br><br> what's 1+1? ;)
    6·1 answer
  • Look at pic please help meh! &gt;
    8·2 answers
  • The water level in a lake was monitored and was noted to have changed −1 1/5 inches in one year. The next year it was noted to h
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!