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
charle [14.2K]
3 years ago
8

Suppose the weights of seventh graders at a certain school vary according to a Normal distribution, with a mean of 100 pounds an

d a standard deviation of 7.5 pounds. A researcher believes the average weight has decreased since the implementation of a new breakfast and lunch program at the school. She finds, in a random sample of 35 students, an average weight of 98 pounds.
What would the P?value tell the researcher in this situation?

a.) the probability that a random sample of students would have a mean of 100 pounds, if the true population mean is 98 pounds

b.) the probability that a random sample of students would have a mean of 98 pounds, if the true population mean is 100 pounds

c.)the probability that a random sample of students would have a mean less than or equal to 100 pounds, if the true population mean is 98 pounds

d.)the probability that a random sample of students would have a mean less than or equal to 98 pounds, if the true population mean is 100 pounds

Mathematics
1 answer:
vesna_86 [32]3 years ago
3 0

Answer:

Please see attachment

Step-by-step explanation:

Please see attachment

You might be interested in
Match the following. 1. an angle that measures more than 0° but less than 90° vertical angles 2. two angles that have a common v
agasfer [191]

Answer:

Match the following:

1. An angle that measures more than 0° but less than 90°:

Acute angle.

2. Two angles that have a common vertex and side but are not overlapping:

Adjacent angles.

3. Two angles whose sum is 90°

Complementary angles.

4. An angle that measures more than 90° but less than 180°:

Obtuse angle.

5. An angle that measures exactly 90°:

Right angle.

6. An angle that measures exactly 180°:

Straight angle.

7. Two angles whose sum is 180°:

Supplementary angles.

8. The point where two line segments, lines, or rays meet to form an angle:

Vertex.

9. Angles that are opposite from one another at the intersection of two lines:

Vertical angles.

Step-by-step explanation:

Match the following:

1. An angle that measures more than 0° but less than 90°:

Acute angle.

2. Two angles that have a common vertex and side but are not overlapping:

Adjacent angles.

3. Two angles whose sum is 90°

Complementary angles.

4. An angle that measures more than 90° but less than 180°:

Obtuse angle.

5. An angle that measures exactly 90°:

Right angle.

6. An angle that measures exactly 180°:

Straight angle.

7. Two angles whose sum is 180°:

Supplementary angles.

8. The point where two line segments, lines, or rays meet to form an angle:

Vertex.

9. Angles that are opposite from one another at the intersection of two lines:

Vertical angles.

5 0
2 years ago
Read 2 more answers
Temperature rose 9°f in 3 hours if the starting wad -5°f what was the final temperature
svetlana [45]
4F is the final temp.
3 0
3 years ago
47/100+3/10+47/100=/100
ira [324]

Answer:

The total is 97/100

Step-by-step explanation:

47/100+3/100=50/100 (aka 1/2)

50/100+47/100=97/100

5 0
2 years ago
When I solved this equation I got x=0.5
qwelly [4]

You might have made an error the first time you solved for x. I got x = -0.5.

When you have your log base 4, the way you cancel that out is by making 4 the base on both sides, so you get 4^(log4) to reduce to 1, and you're left with:

2x + 3 = 4^(1/2) ... Simplify

2x + 3 = 2

2x = -1

x = -1/2

If you plug that back in, everything checks out. Maybe double check your use of logarithm/exponent properties?

4 0
3 years ago
Simplify<br><br> -3-20 divided by (-2*1)<br><br> Is the answer 7?
Anna35 [415]
No the answer is -13. Please mark me brainliest!
8 0
3 years ago
Other questions:
  • A solid lies between planes perpendicular to the x-axis at x=0 and x=19. The cross sections perpendicular to the x-axis on the i
    6·1 answer
  • Which equation results from adding the equations in this system?
    12·2 answers
  • Eddie has saved up $45 to purchase a new camera from the local store. The sales tax on his county is 7% of the sticker price. Wr
    7·1 answer
  • A painter charges $15.92 per hour, plus an additional amount for the supplies. If he made $191.76 on a job where he worked 7 hou
    10·1 answer
  • Compare 7/8 with 14/16 using (&lt;,&gt;,=)
    6·2 answers
  • Use the net price rate to calculate the net price for 10 boxes of computer paper if the unit price is $13.59 and a single trade
    7·1 answer
  • Using the equation given identify the following:<br><br>y=-x-9<br><br>m=______ b=______<br>​
    5·1 answer
  • On a soccer team 40% of the goal are scored by a star player on the team.If 70 goals were scored all season, how many are scored
    7·2 answers
  • What is the volume of the rectangular prism shown ?
    11·1 answer
  • What is the total amount paid for a $60 meal with a 15% tip and 8% tax?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!