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

Author Question: The weight of an object, measured to the nearest gram, is an example of _____. a. a continuous ... (Read 61 times)

dbose

  • Hero Member
  • *****
  • Posts: 597
on: Jun 24, 2018
The weight of an object, measured to the nearest gram, is an example of _____.
 a. a continuous random variable
  b. a discrete random variable
  c. either a continuous or a discrete random variable, depending on the weight of the object
  d. either a continuous or a discrete random variable, depending on the units of measurement

Question 2

The average U.S. daily internet use at home is two hours and twenty minutes. A sample of 64 homes in Soddy-Daisy showed an average usage of two hours and 50 minutes with a standard deviation of 80 minutes. We are interested in determining whether or not the average usage in Soddy-Daisy is significantly different from the U.S. average.
 a. State the null and alternative hypotheses to be tested.
  b. Compute the test statistic.
  c. The null hypothesis is to be tested using  = .05 . Determine the critical value(s) for this test.
  d. What do you conclude?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lgoldst9

  • Sr. Member
  • ****
  • Posts: 372
Reply #1 on: Jun 24, 2018
Answer to Question 1

b

Answer to Question 2

a. H0:  = 140 minutes
Ha:   140 minutes
b. Test statistic t = 3
c. t.025 = 1.998 and -t.025 = -1.998
d. Reject H0 and conclude that the average usage in Soddy-Daisy is significantly different from the national average of 140 minutes.


dbose

  • Member
  • Posts: 597
Reply 2 on: Jun 24, 2018
Excellent

dyrone

  • Member
  • Posts: 322
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Gram stain of S. aureus cells Gram stain of S. aureus cells
Estimating the molecular weight of a protein. The electrophoretic mobility of a protein on an SDS po Estimating the molecular weight of a protein. The electrophoretic mobility of a protein on an SDS po
Gram Positive Testing Gram Positive Testing
Laboratory mice demonstrate that genetic differences can have profound effects on the propensity to Laboratory mice demonstrate that genetic differences can have profound effects on the propensity to
Dead Weight Testers Experiment Dead Weight Testers Experiment
Measuring the client’s weight with a standard platform scale Measuring the client’s weight with a standard platform scale
Video: Kidney Stones

For a complete list of videos, visit our video library