Question

The professor estimates that 80% of students will pass this semester. What is the probability that 3 of the next 4 students will pass? (Must show work) What is the probability that there will be 3 cracks in the next 20 feet of sidewalk? The average is 1 crack per 10 feet of sidewalk. (Must show work) Given a normal probability distribution with a mean of 10, standard deviation of 2, and x=13, calculate z. (Must show work)

Name: the professor estimates that 80 of students will pass this semester what is the probability that 3 of the next 4 students will pass must show work what is the probability that there will be 3 cracks i
Uploaded: 2023-04-17T14:55:31-08:00
Duration: 1 min 8 s
Channel: Adi S
Description: the professor estimates that 80 of students will pass this semester what is the probability that 3 of the next 4 students will pass must show work what is the probability that there will be 3 cracks i

          The professor estimates that 80% of students will pass this
semester. What is the probability that 3 of the next 4 students
will pass? (Must show work) 
 
     What is the
probability that there will be 3 cracks in the next 20 feet of
sidewalk?  The average is 1 crack per 10 feet of sidewalk.
 (Must show work)
 
   Given a normal
probability distribution with a mean of 10, standard deviation
of 2, and x=13, calculate z. (Must show work)

Added by Jack B.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Adi S

04/17/2023

Step 1

Probability of 3 out of 4 students passing: We can use the binomial probability formula: P(X=k) = (n choose k) * p^k * (1-p)^(n-k) where n is the number of trials, k is the number of successes, p is the probability of success, and (n choose k) is the binomial Show more…

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The professor estimates that 80% of students will pass this semester. What is the probability that 3 of the next 4 students will pass? (Must show work) What is the probability that there will be 3 cracks in the next 20 feet of sidewalk? The average is 1 crack per 10 feet of sidewalk. (Must show work) Given a normal probability distribution with a mean of 10, standard deviation of 2, and x=13, calculate z. (Must show work)