How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Mr. Glenn Your Own Question

Mr. Glenn
Mr. Glenn, Math and Stat Expert
Category: Calculus and Above
Satisfied Customers: 569
Experience:  Math Professor for at least 15 yrs
79514296
Type Your Calculus and Above Question Here...
Mr. Glenn is online now
A new question is answered every 9 seconds

A noted psychic was tested perception. The psychic was

Customer Question

A noted psychic was tested for extrasensory perception. The psychic was presented with 240 cards face down and asked to determine if each card were one of five symbols: a star, a cross, a circle, a square, or three wavy lines. The psychic was correct in 75 cases. Let p represent the probability that the psychic correctly identifies the symbol on the card in a random trial. Assume the 240 trials can be treated as a simple random sample from the population of all guesses the psychic would make in his lifetime.
Submitted: 1 year ago.
Category: Calculus and Above
Expert:  Mr. Glenn replied 1 year ago.

Hi

Thank you for using this site.

The answer is:

if p represent the probability that the psychic correctly identifies the symbol on the card in a random trial

then p = 75 / 240 or simply 5/16

*********************************************************************************If you are satisfied and happy with the answer, please choose a high rating. If you need more information, clarifications, or are not satisfied yet, choose 'Continue the conversation'. Bonuses are very much appreciated. Thanks! Kindly remember the ONLY WAY experts receive any credit at all for spending time with customers is if you click on OK, GOOD or EXCELLENT SERVICE even though you have made a deposit or are a subscription customer. YOU MUST COMPLETE THE RATING FOR THE EXPERT TO RECEIVE ANY CREDIT.So kindly do not forget to rate the answers, thanks!

*********************************************************************************You can request me in future by writing "For Mr. Glenn only".