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
Nady [450]
3 years ago
11

In a survey of 603 adults, 98 said that they regularly lie to people conducting surveys. Create a 99% confidence interval for th

e proportion of adults who regularly lie to people conducting surveys. Use Excel to create the confidence interval, rounding to four decimal places.

Mathematics
1 answer:
marysya [2.9K]3 years ago
5 0

Answer:

The population proportion is estimated to be with 99% confidence within the interval (0.1238, 0.2012).

Step-by-step explanation:

The formula for estimating the population proportion by a confidence interval is given by:

\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}

Where:

\hat{p} is the sample's proportion of success, which in this case is the people that regularly lie during surveys,

z_{\alpha /2} is the critical value needed to find the tails of distribution related to the confidence level,

n is the sample's size.

<u>First</u> we compute the \hat{p} value:

\hat{p}=\frac{successes}{n}=\frac{98}{603}=0.1625

<u>Next</u> we find the z-score at any z-distribution table or app (in this case i've used StatKey):

z_{\alpha /2}=2.576

Now we can replace in the formula with the obtained values to compute the confidence interval:

\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}=0.1625\pm 2.576\times\sqrt{\frac{0.1625\times(1-0.1625)}{603}}=(0.1238, 0.2012)

You might be interested in
I need help with this math equation?
Licemer1 [7]

Step-by-step explanation:

the answer to your question is 12m

4 0
3 years ago
There is a game at the carnival that costs $20 to play. There are two outcomes: either you win $100 , or you lose.
Alex_Xolod [135]

Answer:

I would say that the answer is a. because I would go with the lowest one knowing that if I roll anything other than six, I lose this game is designed for you to nearly lose, so I would go with the lowest choice which is a. since i have a lower chance at winning.  

Step-by-step explanation: please mark this brainliest and I will be glad to help anytime.


4 0
3 years ago
What is -3/11 divided by -5/6
Masja [62]

Answer:

0.00909090909

Step-by-step explanation:

8 0
3 years ago
Simplify. -15-(-3)+6 
miv72 [106K]
-15 - (-3) + 6

-15 - (-3) = -15 + 3 = 3 - 15 = - 12

-12 + 6 = 6 - 12 = -6

Your answer is -6
3 0
3 years ago
Read 2 more answers
Given g (2) = -2x + 5 - 1.
Verizon [17]

Answer:

Step-by-step explanation:

Domain : all real numbers

Range : All real numbers

x - intercept : none

y- intercept : (0,2)

End behavior : Points diagnally to the right

5 0
2 years ago
Other questions:
  • Felicia has a box of 16 cookies. if she divides all of the cookies up evenly among the 7 children she watches at the day care, h
    10·2 answers
  • If h(x) = x – 7 and g(x) = x2, which expression is equivalent to (g•h)(5)?
    6·2 answers
  • I have a question. In my class we are doing a new unit and I don't understand it. We are solving systems of equations by graphin
    13·2 answers
  • Help with this question please number 8
    5·1 answer
  • The French club is holding a car wash fundraiser. They are going to charge $20 per car, and expect between 30 and 100 cars. Iden
    12·1 answer
  • I need help! I’m not good at math and I don’t know how to do this
    11·1 answer
  • Use the following written description to write the equation for the situation.
    11·2 answers
  • Carla has a scooter worth $3,890. Her computer is worth $600. She owes $700 on her scooter and $497 on her credit card. Her pers
    14·2 answers
  • Matthew plots an integer on a number line that has an absolute value of 119. Gabrielle plots a different integer on the same num
    12·2 answers
  • Can someone help me pls
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!