Suppose the monthly charges for cell phone plans are normally distributed with mean μ=$68 and standard deviation σ=​$20. ​(a) Draw a normal curve with the parameters labeled. ​(b) Shade the region that represents the proportion of plans that charge less than ​$48. ​(c) Suppose the area under the normal curve to the left of X=​$48 is 0.1587. Provide an interpretation of this result. ​(a) Choose the correct graph below.     A.                   2868108X         A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 28, 68, and 108. The curve’s peak is near the top of the graph at horizontal coordinate 68. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 28, 68, and 108.   B.                   486888X         A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 48, 68, and 88. The curve’s peak is near the top of the graph at horizontal coordinate 68. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 48, 68, and 88.   C.                   6888108X         A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 68, 88, and 108. The curve’s peak is near the top of the graph at horizontal coordinate 88. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 68, 88, and 108.   D.                   284868X         A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 28, 48, and 68. The curve’s peak is near the top of the graph at horizontal coordinate 48. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 28, 48, and 68. ​(b) Choose the correct graph below.     A.                           6888108X 48         A normal curve has a horizontal axis labeled “X” with four labeled coordinates, 48, 68, 88, and 108. The curve’s peak is near the top of the graph at horizontal coordinate 88. Four vertical line segments run from the horizontal axis to the curve at horizontal coordinates 48, 68, 88, and 108. The area under the curve to the left of the vertical line segment at horizontal coordinate 48 is shaded.   B.                           2868108X 48         A normal curve has a horizontal axis labeled “X” with four labeled coordinates, 28, 48, 68, and 108. The curve’s peak is near the top of the graph at horizontal coordinate 68. Four vertical line segments run from the horizontal axis to the curve at horizontal coordinates 28, 48, 68, and 108. The area under the curve to the left of the vertical line segment at horizontal coordinate 48 is shaded.   C.                     486888X         A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 48, 68, and 88. The curve’s peak is near the top of the graph at horizontal coordinate 68. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 48, 68, and 88. The area under the curve to the left of the vertical line segment at horizontal coordinate 48 is shaded.   D.                       284868X         A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 28, 48, and 68. The curve’s peak is near the top of the graph at horizontal coordinate 48. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 28, 48, and 68. The area under the curve to the left of the vertical line segment at horizontal coordinate 48 is shaded. ​(c) Select the correct choice below and fill in the answer box to complete your choice. ​(Type a whole​ number.)   A. The probability is 0.1587 that a randomly selected cell phone plan in this population is less than ​$nothing per month.   B. The probability is 0.1587 that a randomly selected cell phone plan in this population is more than ​$nothing per month.

Suppose the monthly charges for cell phone plans are normally distributed with mean

μ=$68

and standard deviation

σ=​$20.
​(a) Draw a normal curve with the parameters labeled.
​(b) Shade the region that represents the proportion of plans that charge

less

than

​$48.
​(c) Suppose the area under the normal curve to the

left

of

X=​$48

is 0.1587. Provide an interpretation of this result.

​(a) Choose the correct graph below.
 
 

A.

 
 
 
 
 
 
 
 
 

2868108X

 
  •  
  •  
  •  

A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 28, 68, and 108. The curve’s peak is near the top of the graph at horizontal coordinate 68. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 28, 68, and 108.

 

B.

 
 
 
 
 
 
 
 
 

486888X

 
  •  
  •  
  •  

A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 48, 68, and 88. The curve’s peak is near the top of the graph at horizontal coordinate 68. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 48, 68, and 88.

 

C.

 
 
 
 
 
 
 
 
 

6888108X

 
  •  
  •  
  •  

A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 68, 88, and 108. The curve’s peak is near the top of the graph at horizontal coordinate 88. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 68, 88, and 108.

 

D.

 
 
 
 
 
 
 
 
 

284868X

 
  •  
  •  
  •  

A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 28, 48, and 68. The curve’s peak is near the top of the graph at horizontal coordinate 48. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 28, 48, and 68.

​(b) Choose the correct graph below.
 
 

A.

 
 
 
 
 
 
 
 
 
 
 
 
 

6888108X

48
 
  •  
  •  
  •  

A normal curve has a horizontal axis labeled “X” with four labeled coordinates, 48, 68, 88, and 108. The curve’s peak is near the top of the graph at horizontal coordinate 88. Four vertical line segments run from the horizontal axis to the curve at horizontal coordinates 48, 68, 88, and 108. The area under the curve to the left of the vertical line segment at horizontal coordinate 48 is shaded.

 

B.

 
 
 
 
 
 
 
 
 
 
 
 
 

2868108X

48
 
  •  
  •  
  •  

A normal curve has a horizontal axis labeled “X” with four labeled coordinates, 28, 48, 68, and 108. The curve’s peak is near the top of the graph at horizontal coordinate 68. Four vertical line segments run from the horizontal axis to the curve at horizontal coordinates 28, 48, 68, and 108. The area under the curve to the left of the vertical line segment at horizontal coordinate 48 is shaded.

 

C.

 
 
 
 
 
 
 
 
 
 

486888X

 
  •  
  •  
  •  

A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 48, 68, and 88. The curve’s peak is near the top of the graph at horizontal coordinate 68. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 48, 68, and 88. The area under the curve to the left of the vertical line segment at horizontal coordinate 48 is shaded.

 

D.

 
 
 
 
 
 
 
 
 
 
 

284868X

 
  •  
  •  
  •  

A normal curve has a horizontal axis labeled “X” with three labeled coordinates, 28, 48, and 68. The curve’s peak is near the top of the graph at horizontal coordinate 48. Three vertical line segments run from the horizontal axis to the curve at horizontal coordinates 28, 48, and 68. The area under the curve to the left of the vertical line segment at horizontal coordinate 48 is shaded.

​(c) Select the correct choice below and fill in the answer box to complete your choice.
​(Type a whole​ number.)
 

A.

The probability is 0.1587 that a randomly selected cell phone plan in this population is less than

​$nothing

per month.

 

B.

The probability is 0.1587 that a randomly selected cell phone plan in this population is more than

​$nothing

per month.

 
Tired of numerous paper assignments?
Rely on us and receive professional paper writing assistance!
Professional paper Writing Assistance

Who We Are

We are a professional website for customized writing. If you searched a question and stumbled into our website, you are in the right place to receive assistance with your coursework.

Do you handle any type of coursework?

Yes. We have displayed prior orders to demonstrate our experience. We can answer this question for you as we have previously. Please fill out our Order Form so that we may ensure its flawlessness. Correctly completing the order form will help our staff with reference, requirements, and future communication.

Is it hard to Place an Order?

  1. Click on the “Order Now” tab at the top menu or “GET A FREE QUOTE” icon at the bottom and a new page will appear with an order form to be filled
  2. Fill in the initial requirements in the small order form located on the home page and press “continue” button to proceed to the main order form or press “order” button in the header menu. Starting from there let our system intuitively guide you through all steps of ordering process. Submit detailed paper instructions, upload necessary files if needed and provide your contact information – you are almost done!
  3. Proceed with the payment- click on “PROCEED TO CHECKOUT” at the bottom of the page. From there, the payment sections will show, follow the guided payment process and your order will be available for our writing team to work on it. All your payments are processed securely through PayPal. This enables us to guarantee a 100% security of your funds and process payments swiftly.
  4. Delivery- Once finished, your final paper will be available for download through your personal dashboard. You will also receive an email notification with a copy of your paper attached to it.