Question

In: Statistics and Probability

There are 68% of students drive to school in one university. Here is a sample of...

There are 68% of students drive to school in one university. Here is a sample of 20 students.

1) What is the probability that only 12 students drive to school?

2)What is the probability that no more than 15 students drive to school?

3) What is the probability that no more than 10 students drive to school?

4) What is the mean and standard deviation?

5) What is the percentage falling with 1 standard deviation? Does it satisfy the Empirical Rule?

Please explain with reasoning/steps please.

Solutions

Expert Solution

orchestra answered 2 years ago
Next > < Previous

Related Solutions

In a university 20% students belong to the school of business (B), 15% to the school...
In a university 20% students belong to the school of business (B), 15% to the school of engineering(E) and 30% belong to the school of social sciences(S). Of the school of business students 35% have taken a statistics course, of the school of engineering students 45% have taken a statistics course, and of the school of social sciences students, 20% have taken a statistics course. Between the three schools, what fraction of students have taken a statistics course (Q)? If...
68 % of students at a school weight between 54 kg and 86 kg. Assuming this...
68 % of students at a school weight between 54 kg and 86 kg. Assuming this data is normally distributed, what are the mean and standard deviation?
A large university is interested in learning about the average time it takes students to drive...
A large university is interested in learning about the average time it takes students to drive to campus. The university sampled 238 students and asked each to provide the amount of time they spent traveling to campus, the average and standard deviation were 21.5 and 4.32 respectively. This variable, travel time, was then used conduct a test of hypothesis. The goal was to determine if the average travel time of all the university's students differed from 20 minutes. Use a...
A random sample of 250 students at a university finds that these students take a mean...
A random sample of 250 students at a university finds that these students take a mean of 14.3 credit hours per quarter with a standard deviation of 1.5 credit hours. Estimate the mean credit hours taken by a student each quarter using a 98​% confidence interval.
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...
A random sample of 250 students at a university finds that these students take a mean...
A random sample of 250 students at a university finds that these students take a mean of 15.7 credit hours per quarter with a standard deviation of 1.5 credit hours. Estimate the mean credit hours taken by a student each quarter using a 98​% confidence interval.
At a Midwestern University the 450 students in the Business School were classified according to their...
At a Midwestern University the 450 students in the Business School were classified according to their major within the business school and their gender. The results are:    Female Male Total Accounting 68 56 124 Administration 91 40 131 Economics 5 6 11 Finance 61 59 120 Other 39 25 64 Total 264 186 450 Complete a table for marginal distribution. Complete a table for Conditional distribution
At a Midwestern University the 386 students in the Business School were classified according to their...
At a Midwestern University the 386 students in the Business School were classified according to their major within the business school and their gender. The results follow. Female Male Accounting 68 56 124 Administration 91 40 131 Economics 5 6 11 Finance 61 59 120 225 161 386 Find the probability that the selected student is a finance major and a male. b. Find the probability that the selected student is an administration major or a finance major. c. Find...
A total of 23 Gossett High School students were admitted to State University. Of those students,...
A total of 23 Gossett High School students were admitted to State University. Of those students, 7 were offered athletic scholarships. The school’s guidance counselor looked at each group’s summary statistics of their composite ACT scores, wondering if there was a difference between the groups (those who were not offered scholarships and those who were). The statistics for the 16 students who were not offered scholarships are x̅ = 24.7, s = 2.8 and for the 7 who were, x̅...
Question 12 Unsaved A sample of University of Colorado students each viewed one of two simulated...
Question 12 Unsaved A sample of University of Colorado students each viewed one of two simulated news reports about a terrorist bombing against the United States by a fictitious country. One report showed the bombing attack on a military target and the other on a cultural/educational site. Additionally, before viewing the news report, each student read one of two "primes." The first was a prime for forgiveness based on the biblical saying "Love thy enemy," while the second was a...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT