Aman claims to have extrasensory perception. as a test, a fair coin is flipped 10 times and the man is asked to pick the outcome in advance. (‘fair’ means here that heads and tails are equally likely.) he gets 7 correct. what is the probability he would have done just as well (that is guessed 7 or more correctly) by randomly guessing?

0.9375

Step-by-step explanation:

Given that a man claims to have extrasensory perception. As a test, a fair coin is flipped 10 times and the man is asked to pick the outcome in advance. (‘Fair’ means here that heads and tails are equally likely.) He gets 7 correct.

Suppose he has done only by guessing then probability would be:

Let X be no of head obtained by tossing a coin 10 times

X is binomial because each trial is independent and probability is 0.5

Reqd probability

= P(X=7) =

The probability he would have done just as well (that is guessed 7 or more correctly) by randomly guessing is 0.9375

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart