Jump to content

Anyone in here good at statistics?


Razorback

Recommended Posts

Some questions -- this stuff is kinda mind boggling.

 

In a given school, 27% of the students use HP calculators. 73 of the school's students are selected at random and surveyed as to the maker of their calculator. Let x be the number of students who have an HP calculator.

 

1. What is the probability that exactly 20 of these randomly sampled students have an HP Calculator?

A. .0955 B. .1013 C. .1022 D. .1039

 

2. What is the probability that fewer than 17 of these randomly sampled students have an HP Calculator?

A. .2004 B. .2334 C. .2609 D. .2848

 

3. What is the probability that more than 30 of these randomly sampled students have an HP Calculator?

A. .0014442 B. .0030995 C. .0032308 D. .0063303

 

If anyone could shed some light it would be much appreciated. Thanks.

Link to comment
Share on other sites

Guest timmybgood
Originally posted by doggunracing:

-1 :D By the way, anyone else getting PELTED with snow? It's almost white-out here!

yea, i only had to walk from the library to larkins which is what, 100 yards? i turned into a snowman long before i reached larkins
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...