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

Author Question: A local university administers a comprehensive examination to the candidates for B.S. degrees in ... (Read 110 times)

sjones

  • Hero Member
  • *****
  • Posts: 520
on: Jun 24, 2018
A local university administers a comprehensive examination to the candidates for B.S. degrees in Business Administration. Five examinations are selected at random and scored. The scores are shown below. Grades 80 90 91 62 77
 a. Compute the mean and the standard deviation of the sample.
  b. Compute the margin of error at 95 confidence.
  c. Develop a 95 confidence interval estimate for the mean of the population. Assume the population is normally distributed.

Question 2

A sample of 144 commuters in Boston indicated that they commute an average of one hour and thirty minutes per day. The standard deviation of the sample was 36 minutes. Compute the 95 confidence interval for the average commute time of the population (in minutes).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fdliggud

  • Sr. Member
  • ****
  • Posts: 366
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. Mean = 80, S = 11.77 (rounded).
b. 14.61
c. 65.39 to 94.61

Answer to Question 2

84.12 to 95.88


sjones

  • Member
  • Posts: 520
Reply 2 on: Jun 24, 2018
:D TYSM

lcapri7

  • Member
  • Posts: 350
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

(c) snow in Nunavut, alter the local albedo, causing altered microclimates. High albedos are found (c) snow in Nunavut, alter the local albedo, causing altered microclimates. High albedos are found
Blue whale skeleton, outside the Long Marine Laboratory at the University of California, Santa Cruz Blue whale skeleton, outside the Long Marine Laboratory at the University of California, Santa Cruz
Mechanism of Action of Local Anesthetics Mechanism of Action of Local Anesthetics
In The Gross Clinic (1875), by Thomas Eakins, Professor Samuel Gross’s team of surgeons cuts through In The Gross Clinic (1875), by Thomas Eakins, Professor Samuel Gross’s team of surgeons cuts through
Body Part, Method of Examination, and Equipment Used During the General Physical Examination Cont Body Part, Method of Examination, and Equipment Used During the General Physical Examination Cont
Video: Sperm Formation

For a complete list of videos, visit our video library