« previous next »

Author Question: The mean systolic blood pressure for a random sample of 28 women aged 18-24 is 115.2 mm Hg and the ... (Read 100 times)

theo

  • Hero Member
  • *****
  • Posts: 698
on: Jul 24, 2018
The mean systolic blood pressure for a random sample of 28 women aged 18-24 is 115.2 mm Hg and the standard deviation is 13.1 mm Hg.
 
  Construct a 90 confidence interval for the standard deviation , of the systolic blood pressures of all women aged 18-24. Round to the nearest hundredth when necessary.
  A) (11.23, 15.99 ) B) (10.22, 18.34 ) C) (10.59, 16.54 ) D) (10.75, 16.94 )

Question 2

The time (in years) until the first critical-part failure for a certain car is exponentially distributed with a mean of 3.4 years. Find the probability that the time until the first critical-part failure is less than 1 year.
 
  A) 0.966627 B) 0.033373 C) 0.745189 D) 0.254811


carolinefletcherr

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Sample inventory order form. Sample inventory order form.
Sample Items from the Brief Multidimensional Measure of Religiousness/Spirituality (BMMRS) Sample Items from the Brief Multidimensional Measure of Religiousness/Spirituality (BMMRS)
Teaching women about the safety of drug use during pregnancy is an essential component of nursing ... Teaching women about the safety of drug use during pregnancy is an essential component of nursing ...
A technician-made adapter used to test exhaust system back pressure. A technician-made adapter used to test exhaust system back pressure.
Actions of glucagon in liver that lead to a rise in blood glucose Actions of glucagon in liver that lead to a rise in blood glucose
Blood and Nerve Supply of Bone Blood and Nerve Supply of Bone
Video: Introduction to Pre-eclampsia

For a complete list of videos, visit our video library