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

Author Question: Two thousand numbers are selected randomly; 960 are even numbers. a. State the hypotheses to ... (Read 610 times)

ss2343

  • Hero Member
  • *****
  • Posts: 548
on: Aug 1, 2018
Two thousand numbers are selected randomly; 960 are even numbers.
 a. State the hypotheses to determine whether the proportion of odd numbers is significantly different from 50.
  b. Compute the test statistic.
  c. At the .10 level of significance using the p-value approach, test the hypotheses.

Question 2

A law enforcement agent believes that at least 88 of the drivers stopped for speeding on Saturday nights are under the influence of alcohol. A sample of 66 drivers who were stopped for speeding on a Saturday night was taken. Eighty percent of the drivers in the sample were under the influence of alcohol.
 a. State the null and alternative hypotheses.
  b. Compute the test statistic.
  c. Using the p-value approach, test the hypotheses at the .05 level of significance.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cloudre37

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Aug 1, 2018
Answer to Question 1

a . H0: p = .5
Ha: p  .5
b. z = 1.79
c. p-value = .0734 < .10; reject H0

Answer to Question 2

a . H0: p .88
Ha: p < .88
b. z = -2
c. p-value = .0228 < .05; reject H0


ss2343

  • Member
  • Posts: 548
Reply 2 on: Aug 1, 2018
Wow, this really help

xiaomengxian

  • Member
  • Posts: 311
Reply 3 on: Yesterday
Excellent

« previous next »
 

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.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

(a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr (a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr
Calories Expended during Selected Activities Calories Expended during Selected Activities
As their numbers grow and their resources and health improve, the elderly will enjoy life more and ... As their numbers grow and their resources and health improve, the elderly will enjoy life more and ...
Selected Adjuncts to Anesthesia Selected Adjuncts to Anesthesia
Ion channels in myocardial cells: (a) resting state before action potential (all channel gates ... Ion channels in myocardial cells: (a) resting state before action potential (all channel gates ...
State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below. State the transformations on the function f(x)= 4sin(x-pi)-2 and then graph two cycles below.
Video: Dissociative Disorders (Part 2)

For a complete list of videos, visit our video library