How are your grades? In a recent semester at a local university, 300 students enrolled in...

How are your grades? In a recent semester at a local university, 300 students enrolled in both Statistics I and Psychology I. Of these students, 83 got an A in statistics, 75 got an A in psychology, and 49 got an A in both statistics and psychology. Round the answers to four decimal places, as needed.

A) Find the probability that a randomly chosen student got an A in statistics or psychology or both.
B) Find the probability that a randomly chosen student did not get an A in statistics.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

The final grades in business mathematics of 60 students at University of Maryland last semester are...

The final grades in business mathematics of 60 students at University of Maryland last semester are recorded below. Use the information provided below to answer the questions that follows. 68 54 75 82 68 62 76 73 79 73 60 71 59 75 60 61 65 75 77 66 78 63 78 66 78 75 77 69 74 68 78 61 75 64 79 83 71 79 68 67 78 76 65 71 73 65 73 57 78 62 76...

For students who first enrolled in two year public institutions in a recent semester, the proportion...

For students who first enrolled in two year public institutions in a recent semester, the proportion who earned a bachelor's degree within six years was 0.396 The president of a certain college believes that the proportion of students who enroll in her institution have a lower completion rate. (a) Determine the null and alternative hypotheses. (b) Explain what it would mean to make a Type I error. (c) Explain what it would mean to make a Type II error. (a)...

For students who first enrolled in two year public instituitons in a recent semester, the proportion...

For students who first enrolled in two year public instituitons in a recent semester, the proportion who earned a bachelor's degree within six years was 0.388. The president of a certain college believes that the proportion of students who enroll in her institution have a higher completion rate. A.) Determine the null & alternative hypotheses. B.) Explain what it would mean to make a Type I error. C.) Explain what it would mean to make a Type II error. A.)...

The table below shows the number of male and female students enrolled in nursing at a university for a certain semester.

The table below shows the number of male and female students enrolled in nursing at a university for a certain semester. A student is selected at random. Complete parts (a) through (d). Nursing majorsNon-nursing majorsTotalMales9810161114Females60017292329Total69627453443(c) Find the probability that the student is not female or a nursing major. P(not being female or being a nursing major)=_______ Round to the nearest thousandth as needed.) (d) Are the events "being male" and "being a nursing major" mutually exclusive? Explain. A. Yes, because one can't be male and...

In a certain semester, 500 students enrolled in both Calculus I and Physics I. Of these...

In a certain semester, 500 students enrolled in both Calculus I and Physics I. Of these students, 82 got an A in calculus, 73 got an A in physics, and 42 got an A in both courses. Which of the following probabilities is the smallest? The probability that a randomly chosen student... Got an A in both of the two courses Got an A in physics but not calculus Got an A in at least one of the two courses...

A sample of 300 students of undergraduate and 300 students of postgraduate classes of a university...

A sample of 300 students of undergraduate and 300 students of postgraduate classes of a university were asked to give their opinion towards autonomous colleges. 190 of the undergraduate and 210 of the postgraduate students favoured the autonomous status. i) At 5% significance level, would it be said that the opinions of the undergraduate and postgraduate students on autonomous colleges are independent? {The critical value of the requisite test statistic is 3.84} ( ii) What is the implication / interpretation...

Five students take statistics one semester and college algebra the next semester. Their overall course grades...

Five students take statistics one semester and college algebra the next semester. Their overall course grades (%) are listed in the table. Student Statistics College Algebra 1 80.0% 85.5% 2 72.6% 71.0% 3 99.0% 93.2% 4 91.3% 93.0% 5 68.9% 74.8% a. Which statistical procedure, listed in the Assessment, would be most appropriate to test the claim "student overall course grades are the same in both courses"? Options are: t-Test: Paired Two Sample for Means t-Test: Two-Sample Assuming Equal Variances...

a. Is the average GPA of all currently enrolled students at the University of Florida an...

a. Is the average GPA of all currently enrolled students at the University of Florida an example of a parameter or a statistic? b. Is the number of magazines read last year by a collection of people an example of a discrete or continuous variable? c. Are cat breeds an example of a quantitative or a qualitative variable? d. What is the difference between a simple random sample and a stratified random sample?

At the end of a semester, the students’ grades for Business Data Analysis 1 were tabulated...

At the end of a semester, the students’ grades for Business Data Analysis 1 were tabulated in the following 3×2 contingency table to see if there is any association between class attendance and grades received # of Days Absent Grade Received Pass Fail 0-3 135 110 4-6 36 4 7-25 9 6 (a) Calculate the probability that a student selected at random: i. Was absent for less than four days ii. Was absent for less than seven days iii. Passed...

The GPAs of all 5540 students enrolled at a university has a distribution with a mean...

The GPAs of all 5540 students enrolled at a university has a distribution with a mean of 3.02 and a standard deviaiton of 0.29. Let x-bar be the mean GPA of a random sample of 48 students selected from this university. a. Find the mean and standard deviation of x-bar and comment on the shape of its sampling distribution (1 point for each). b. What is the probability that the sample mean of such a sample will be greater than...

Subjects