Question

9. Assume that in a statistics class the probability of receiving a grade of A equals 0.30 and the probability of receiving a

0 0
Add a comment Improve this question Transcribed image text
Answer #1

NO. eceiving a asade niA in Statisties dlasc aceiving asade al B in 3tatistics class prA )-0.80 and PCB)-0.30 n comalele info1A and B ame uualy exdlusive 2CAnB) By defination PCA 6 A and ane mutuelly an non-mutually exclvive CAnB Tr A and B doe indepA nd 3 indepenlenb est think this auettion-answer is inarreel r option incorrec

Add a comment
Know the answer?
Add Answer to:
9. Assume that in a statistics class the probability of receiving a grade of A equals 0.30 and the probability of receiving a grade of B equals 0.30. The probability that a randomly selected student...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • In a certain statistics class the probability is 0.76 that a randomly selected student will be...

    In a certain statistics class the probability is 0.76 that a randomly selected student will be female. The probability that the student is female and is getting a degree in Health Administration is 0.12. What is the probability that a randomly chosen student from the class is studying Health Administration, if we know that she's a woman? Report with accuracy to 2 decimals.

  • 6. Students in one statistics course need to earn a grade of at least C, otherwise...

    6. Students in one statistics course need to earn a grade of at least C, otherwise they need to repeat the course. It is also known that 85% of all students who attend class regularly will earn a grade of at least C, while only 30% of those students who do not attend class regularly will earn a grade of at least C. Historically, 80% of all students in this course attend class regularly. You must explicitly define any events...

  • A class of 50 students obtained the following grades in a statistics course: A 5 B...

    A class of 50 students obtained the following grades in a statistics course: A 5 B 25 15 D 5 If one student is selected at random, what is the probability that a. the student obtained a B? b. the student obtained either a B or a C? c. the student did not obtain a D? d. the student did not obtain either a B or a C?

  • Randomly selected students in a statistics class were asked to report the number of hours they...

    Randomly selected students in a statistics class were asked to report the number of hours they slept on weeknights and on weekends. At α = 0.05, the experimenter wants to know if there is sufficient evidence that there is a difference in the mean number of hours slept. Student                 1          2          3          4          5          6          7          8 Hours Sun-Thurs           8          5.5       7.5       8          7          6          6          8 Hours                                 Fri-Sat                  4          7          10.5     12        11        9          6          9 a.   State the hypotheses and identify the claim. b.   A student calculates the test statistic using this formula: Is this the correct formula to use for this situation? (Hint:...

  • statistics grades: In a statistics class of 35 students, there were 17 men and 18 women....

    statistics grades: In a statistics class of 35 students, there were 17 men and 18 women. Six of the men and seven of the women received an A in the course. A student is chosen at random from the class. (a) Find the probability that the student is a woman. (b) Find the probability that the student received an A. (c) Find the probability that the student is a woman or received an A. (d) Find the probability that the...

  • 3 points each nts. Pick two students randomly, 1. In a Math 2526 class, there are...

    3 points each nts. Pick two students randomly, 1. In a Math 2526 class, there are 10 female and 15 male students. PICK the probability that both are male students is: - 0.55 a) 0.25, b) 0.35, c). 0:35, d). 0.45 2. In a Math 2526 class, there are 10 female and 15 male students. Among 10 got grade A. Among 15 male students, also 3 got grade A. le students. Among 10 female students, 3 Let A= 'pick one...

  • Sick children: There are 21 students in Mrs. Bush's sixth-grade class.

    Sick children: There are 21 students in Mrs. Bush's sixth-grade class. On a cold winter day in February, many of the students had runny noses and sore throats. After examining each student, the school nurse constructed the following table. Round the answers to four decimal places, as needed. Sore ThroatNo Sore ThroatRunmy Nose No Runny68Nose25(a) Find the probability that a randomly selected student has a runny nose. (b) Find the probability that a randomly selected student has a sore throat. (c) Find the...

  • An AP Statistics teacher claims that the AP Statistics grade distribution is as follows: Grade A...

    An AP Statistics teacher claims that the AP Statistics grade distribution is as follows: Grade A B C D F % 20 40 20 15 5 Suppose that a sample of 100 students taking AP Statistics class yields the observed counts shown below: Grade A B C D F # of Students 25 35 15 17 8 Use a 0.10 significance level to test the claimed AP Statistics grade distribution is correct. (a) Identify the appropriate hypothesis test and explain...

  • 4 or 5 Total Assuming that a single student is randomly selected from the sample data:...

    4 or 5 Total Assuming that a single student is randomly selected from the sample data: (a) What is the probability that the student skips class sometimes, often or almost always and has an A average grade? (b) What is the probability that the student has an average grade of B or less? Yo What is the probability that the student skips class rarely or never, given that she/he has a B average grade? (d) Test at the 1% significance...

  • 3. Exam grades across all students across all sections of an introductory statistics class are approximately...

    3. Exam grades across all students across all sections of an introductory statistics class are approximately normally distributed with a mean of 72 and a standard deviation of 11. Use the normal distribution to find answer the following questions. a. What percent of students scored above a 90%? b. What percent scored below 60%? c. If the lowest 5% of students will be required to attend an extra study session, what grade is the cutoff for being required to attend...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT