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
Sauron [17]
2 years ago
8

Suppose you are investigating the relationship between two variables, traffic flow and expected lead content, where traffic flow

is a predictor of lead content. You find the 95% CI for expected lead content when traffic flow is 15, based on a sample of n= 10 observations, is (461.7, 598.1).
Required:
What parameter is this interval estimating?
Mathematics
1 answer:
prisoha [69]2 years ago
8 0

Answer:

The answers is " Option B".

Step-by-step explanation:

CI=\hat{Y}\pm t_{Critical}\times S_{e}

Where,

\hat{Y}= predicted value of lead content when traffic flow is 15.

\to df=n-1=8-1=7

 95\% \ CI\  is\  (463.5, 596.3) \\\\\hat{Y}=\frac{(463.5+596.3)}{2}\\\\

     =\frac{1059.8}{2}\\\\=529.9

Calculating thet-critical valuet_{ \{\frac{\alpha}{2},\ df \}}=-2.365

The lower predicted value =529.9-2.365(Se)

463.5=529.9-2.365(Se)\\\\529.9-463.5=2.365(Se)\\\\66.4=2.365(Se)\\\\Se=\frac{66.4}{2.365} \\\\Se=28.076

When 99\% of CI use as the expected lead content: \to 529.9\pm t_{0.005,7}\times 28.076 \\\\=(529.9 \pm 3.499 \times 28.076)\\\\=(529.9 \pm 98.238)\\\\=(529.9-98.238, 529.9+98.238)\\\\=(431.662, 628.138)\\\\=(431.6, 628.1)

You might be interested in
Tyler has a lizard named Larry. Tyler wants to build a rectangular pen for Larry to run
QveST [7]

Answer:

You can go for 1x9, 2x8, 3x7, 4x6, 5x5.

5x5 is the best as it builds a square, which maximizes space.

20*2.50 = $50.

7 0
3 years ago
What is the value of 7(4 + x) when x = 5?
NikAS [45]

Step-by-step explanation:

❉ \underline{ \underline{ \sf{Given}}} :

  • x = 5

❉ \underline{ \underline{ \sf{To \: find}}}  :

  • value of 7 ( 4 + x )

Plug the value of x and simplify :

⟿ \sf{7(4 + 5)}

Add the numbers : 4 and 5

⟿ \sf{7 \times 9}

Multiply 7 by 9

⟿ \boxed{  \sf{63}}

\red{  \boxed{ \boxed{ \tt{⇾Our \: final \: answer : 63}}}}

Hope I helped ! ♪

Have a wonderful day / night ! ツ

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

8 0
2 years ago
Is this a function?<br> {(-1,3); (-2,-3); (2,0); (0,2)}
Molodets [167]
Yes, because the x’s aren’t repeated
8 0
2 years ago
Using the given points and line, determine the slope of the line. (1, 2) and (2, 1) slope = 2 slope = 1 slope = -1
Bas_tet [7]

Answer:

-1

Step-by-step explanation:

Slope formula: (y₂ - y₁) / (x₂ - x₁)

= (2 - 1) / (1 - 2)

= -1

8 0
2 years ago
Subtract.
3241004551 [841]

Answer:

405

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan’s father and paternal grandfather were all
    15·1 answer
  • Slope of (-2,2) and (3,4)
    15·1 answer
  • Please help me!!!!!!!!!!!
    14·1 answer
  • A car is priced at $12000. which is the better deal 10% off or $1500 cash back
    12·1 answer
  • you draw a card from a deck if you get a red card you win nothing if you get a spade you win 14 for any club you win 28 plus an
    6·1 answer
  • Solve the following system of equations:<br> x − 2y = 5<br> 2x − 4y = 10
    13·2 answers
  • In elections 32,000 people voted for Mayor Jackson. A total of 56,000 people voted in the election. What is the ratio of the who
    15·1 answer
  • A two-word Phrase that indicates a ratio or fraction
    10·2 answers
  • The perimeter of a flower garden with three sides is 46 feet. One side of the garden is 11 feet long. Another side of the garden
    6·1 answer
  • The graph below shows the numbers of cups of strawberry juice that are mixed with different numbers of cups of lemon-lime soda t
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!