72% of all students at a college still need to take another math class. If 34 students are randomly selected, find the probability thata. Exactly 23 of them need to take another math class. b. At most 23 of them need to take another math class. c. At least 22 of them need to take another math class. d. Between 21 and 25 (including 21 and 25) of them need to take another math class.  Round all answers to 4 decimal places.

Question

72% of all students at a college still need to take another math class. If 34 students are randomly selected, find the probability that

a. Exactly 23 of them need to take another math class. 
b. At most 23 of them need to take another math class. 
c. At least 22 of them need to take another math class. 
d. Between 21 and 25 (including 21 and 25) of them need to take another math class. 

Round all answers to 4 decimal places.

Expert Answer

Want to see the step-by-step answer?

See Answer

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

See Answer
*Response times vary by subject and question complexity. Median response time is 34 minutes and may be longer for new subjects.

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Typing errors in a text are either nonword errors (as when "the" is typed as "teh") or word errors t...

A: The sample size, n is provided as 10. The probability of error caught is 0.7. Therefore, the probabi...

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 14.4 year...

A: Given information:Mean, µ=14.4Standard deviation, σ=3.8Sample size, n=23

Q: Find the standard deviation of the distribution in the following situations. (a) MENSA is an organiz...

A: a)It is given that the mean is 100.The IQs in the top 2% of the population represents the area of 0....

Q: Find the following probabilities  a.) P(Z ≤ -1.25) b.) P(Z > 1.45)

A: a)Here probability of Z is less than or equal to –1.25 represents the area to the left of –1.25.

Q: The age of a first-grader on September 1 at Garden Elementary School has the following distribution:...

A: a)The probability that she is over 6.5 years old can be calculated:

Q: A random sample of 226 Chinese Americans has finished an average of 12.6 years of formaleducation wi...

A: The provided data is,

Q: Statistics Question

A: Hypotheses:Denote μ1, μ2 as the true average number of days spent in the hospital for childbirth, by...

Q: Find k such that P(-k < Z < k) = .6970  it might help to sketch the situation

A: To value of k can be determine as:By using Z-table,

Q: Use the standard normal distribution (aka z distribution where mu = 0 and sigma = 1) to determine th...

A: The middle 95% of the data is,