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

Author Question: A department store has determined that 25 of all its sales are credit sales. A random sample of 75 ... (Read 96 times)

SO00

  • Hero Member
  • *****
  • Posts: 568
on: Jun 24, 2018
A department store has determined that 25 of all its sales are credit sales. A random sample of 75 sales is selected.
 a. What is the probability that the sample proportion will be greater than .34?
  b. What is the probability that the sample proportion will be between .196 and .354?
  c. What is the probability that the sample proportion will be less than .25?
  d. What is the probability that the sample proportion will be less than .10?

Question 2

Assume z is a standard normal random variable. Then P(-1.5  z  1.09) equals _____.
 a. .4322
  b. .3621
  c. .7953
  d. .0711


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jgranad15

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .0359
b. .8411
c. .5
d. .0014

Answer to Question 2

c


SO00

  • Member
  • Posts: 568
Reply 2 on: Jun 24, 2018
Excellent

anyusername12131

  • Member
  • Posts: 327
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

A medical assistant holds a specimen container to receive a biopsy sample. A medical assistant holds a specimen container to receive a biopsy sample.
Sample Advance Directive Cont. Sample Advance Directive Cont.
Sample composition of maternal and paternal HLA haplotypes. Sample composition of maternal and paternal HLA haplotypes.
Sample time management planning chart for a massage student. Sample time management planning chart for a massage student.
A sample of 400 observations will be taken from an infinite population. The population ... A sample of 400 observations will be taken from an infinite population. The population ...
Sample Inclusion for Various s Sample Inclusion for Various s
Video: Cardiac conductile cells

For a complete list of videos, visit our video library