This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The salaries at a corporation are normally distributed with an average salary of 19,000 and a ... (Read 116 times)

altibaby

  • Hero Member
  • *****
  • Posts: 562
on: Jun 24, 2018
The salaries at a corporation are normally distributed with an average salary of 19,000 and a standard deviation of 4,000.
 a. What is the probability that an employee will have a salary between 12,520 and 13,480?
  b. What is the probability that an employee will have a salary more than 11,880?
  c. What is the probability that an employee will have a salary less than 28,440?

Question 2

A small stock brokerage firm wants to determine the average daily sales (in dollars) of stocks to their clients. A sample of the sales for 36 days revealed average daily sales of 200,000 . Assume that the standard deviation of the population is known to be 18,000.
 a. Provide a 95 confidence interval estimate for the average daily sale.
  b. Provide a 97 confidence interval estimate for the average daily sale.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ashely1112

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .0312
b. .9625
c. .9909

Answer to Question 2

a. 194,120 to 205,880
b. 193,490 to 206,510


altibaby

  • Hero Member
  • *****
  • Posts: 562
Reply #2 on: Jun 24, 2018
Thank you


ashely1112

  • Sr. Member
  • ****
  • Posts: 347
Reply #3 on: Jun 24, 2018
No problemo


« previous next »
 

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

(a) Mean duration (days) and (b) average maximum depth (mm) of snow cover throughout northern latitu (a) Mean duration (days) and (b) average maximum depth (mm) of snow cover throughout northern latitu
Airflow through the large diameter upper intake manifold is distributed to smaller diameter ... Airflow through the large diameter upper intake manifold is distributed to smaller diameter ...
Average Distribution of Incoming Solar Radiation Average Distribution of Incoming Solar Radiation
Average Surface Air Pressure – July Average Surface Air Pressure – July
A random sample of 87 airline pilots recruited by an airline service had an average yearly ... A random sample of 87 airline pilots recruited by an airline service had an average yearly ...
The temperature of an average lightning bolt is 3.0 x 104 °C. What is the equiva The temperature of an average lightning bolt is 3.0 x 104 °C. What is the equiva
Video: Proteins

For a complete list of videos, visit our video library