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sveticcg [70]
3 years ago
13

A survey asked people if they were aware that maintaining a healthy weight could reduce the risk of stroke. A 97% confidence int

erval was found using the survey results to be (0.45, 0.67). What is the correct interpretation of this interval?
Mathematics
1 answer:
Natalija [7]3 years ago
5 0

Answer:

97% confidence interval for the survey is between a lower limit of 0.45 and an upper limit of 0.67

Step-by-step explanation:

Confidence Interval is given by the mean + or - error margin

The lower limit of the confidence interval is found by subtracting the error margin from the mean.

The upper limit is obtained by adding the error margin to the mean.

The interpretation is that the mean is between 0.45 and 0.67

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A new pencil is 19 centimeters long. Levi uses it for a month. The pencil now measures 8 centimeters.
pogonyaev

Answer:

11 cm

Step-by-step explanation:

Given:

Length of new pencil = 19 cm

Length of pencil after using a month = 8 cm

Question asked:

The pencil is centimeters shorter now than when it was new = ?

Solution:

Length of new pencil = 19 cm

Length of pencil after using a month =  8 cm

The pencil is centimeters shorter now than when it was new = 19 cm -  8 cm

                                                                                                     = 11 cm

Length of pencil has been used during a month = 11 cm

8 0
3 years ago
What is the equivalent fraction for 9/25
Hatshy [7]
Equivalent Fractions for 9/25:
9/25, 18/50, 27/75, 36/100, 45/125, 54/150, 63/175, 72/200, 81/225, 90/250, and so on ...
8 0
3 years ago
Read 2 more answers
For what value of p will the pair of linear equations have infinitely many solutions (p-3)x + 3y = p , px+ py = 12
sleet_krkn [62]

Answer: p = 6


Step-by-step explanation:

HI !


 px + 3y - ( p-3)=0


a₁ = p , b₁ = 3 , c₁ = - (p-3)


=====================


12x + py - p=0


a₂ = 12  , b₂ = p , c₂ = -p


since , the equations have infinite solutions , 


a₁/a₂ = b₁/b₂ = c₁/c₂


p/12 = 3/p =  p-3/p



--------------------------------------


p/12 = 3/p


cross multiply ,


p² = 36


p = √36

 p = 6


for the value of p = 6 , the equations will have infinitely many solutions





5 0
3 years ago
you have $895 in your checking account and write checks for $669, plus take $100 in cash out of your account. How much do you ha
Scilla [17]
To answer this we just need to set up a equation:- 

895 - 669 - 100 = 126.

SO, after these transactions you will have $126 left. 

Hope I helped ya!! 
7 0
3 years ago
What does the magnitude of a vector represent? a. the direction of the vector c. the length of the vector b. the difference betw
FinnZ [79.3K]
The magnitude of a vector is the length of the vector. It is also known as the modulus of the vector. For any vector of the form <a,b>, the length is equal to sqrt(a^2+b^2). Note how this follows from the pythagorean theorem.
5 0
3 years ago
Read 2 more answers
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