Author Question: On a given day, the price of a gallon of milk had a mean price of 2.16 with a standard deviation of ... (Read 130 times)

Marty

  • Hero Member
  • *****
  • Posts: 553
On a given day, the price of a gallon of milk had a mean price of 2.16 with a standard deviation
  of 0.07. A particular food store sold milk for 2.09 /gallon. Interpret the z-score for this gas
  station.
 
  A) The milk price of this food store falls 7 standard deviations below the mean milk price of
  all food stores.
  B) The milk price of this food store falls 7 standard deviations above the mean milk price of
  all food stores.
  C) The milk price of this food store falls 1 standard deviation above the mean milk price of
  all food stores.
  D) The milk price of this food store falls 1 standard deviation below the milk gas price of all
  food stores.

Question 2

A recent survey found that 61 of all adults over 50 wear glasses for driving. In a random
  sample of 70 adults over 50, what is the mean and standard deviation of the number who wear
  glasses? Round to the nearest hundredth when necessary.
 
  A) mean: 42.7; standard deviation: 6.53 B) mean: 27.3 ; standard deviation: 4.08
  C) mean: 27.3 ; standard deviation: 6.53 D) mean: 42.7; standard deviation: 4.08



Animal_Goddess

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

D

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

For a complete list of videos, visit our video library