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
Which number belongs to the solution set of the equation below? 8x=120
vlabodo [156]
8x = 120
x = 120/8
x = 15
4 0
3 years ago
What is the correct way to check the solved equation<br> 4,127÷3=1,375 remainder 2<br>​
Dafna11 [192]

the quickest way to do this would be to multiply 1,375 by 3 and then add 2.

1,375 * 3 = 4,125 + 2 = 4,127

correct!

6 0
3 years ago
Read 2 more answers
How do I do this and what is the correct answer?
mariarad [96]
B=3

Hope this helps.
Correct me if I’m wrong.
8 0
3 years ago
Read 2 more answers
QUESTIONS IN Picture TYSM Guys
babymother [125]

Option E:

The value of m that makes the inequality true is 5.

Solution:

Given inequality is 3m + 10 < 30.

Let us first simplify the expression.

3m + 10 < 30

Subtract 10 from both side of the equation.

3m < 20 – – – – (1)

<u>To find the value of m that makes the inequality true:</u>

Option A: 20

Substitute m = 20 in (1),

⇒ 3(20) < 20

⇒ 60 < 20

It is not true because 60 is greater than 20.

Option B: 30

Substitute m = 30 in (1),

⇒ 3(30) < 20

⇒ 90 < 20

It is not true because 90 is greater than 20.

Option C: 8

Substitute m = 8 in (1),

⇒ 3(8) < 20

⇒ 24 < 20

It is not true because 24 is greater than 20.

Option D: 10

Substitute m = 10 in (1),

⇒ 3(30) < 20

⇒ 90 < 20

It is not true because 90 is greater than 20.

Option E: 5

Substitute m = 5 in (1),

⇒ 3(5) < 20

⇒ 15 < 20

It is true because 15 is less than 20.

Hence the value of m that makes the inequality true is 5.

Option E is the correct answer.

5 0
3 years ago
What impact does negative rational numbers have on whether you add or subtract rational numbers
Artemon [7]
If the signs of the rational numbers are the same, you add them, i.e. ++ or --.
If they are different, you subtract them, i.e. +- or -+
7 0
3 years ago
Other questions:
  • Mr reinard bought 5 pounds of feed for his chickens for $10. how much did the feed cost per pound in dollars
    10·1 answer
  • What is the solution to this equation? 4x^2+98=0
    5·1 answer
  • Name a capital letter that appears to have parallel lines
    8·2 answers
  • Need help fast Thank
    9·1 answer
  • Solve for p. 2(p + 3) = 20
    11·2 answers
  • 11, 16, 12, 7, 23, 9, 5, 5 What is the median of the data?
    8·2 answers
  • chirstoper bought a new watch at the store when they were having a 20% off sale. if the regular price was $48, how much did chri
    9·2 answers
  • Through: (4,-4), slope= 1/4
    14·2 answers
  • Pls help you will get brainliest
    9·1 answer
  • Finbar invested money in a transportation stock whose growth is modeled by the function f(x) = 0.01(2)x, where x represents numb
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!