Question

Ten percent of American adults are left-handed. A statistics class has 30 students in attendance.                           &

  1. Ten percent of American adults are left-handed. A statistics class has 30 students in attendance.                                                                                                                          (6)
    1. Find the mean for the number of left-handed students in such classes of 30 students.
    1. Find the standard deviation for the number of left-handed students in such classes of 30 students.
    1. Would it be unusual to survey a class of 30 students and find that 8 of them are left-handed? Why or why not?
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
10% of American adults are left-handed. A statistics class has 150 students in attendance. a. Determine...
10% of American adults are left-handed. A statistics class has 150 students in attendance. a. Determine the probability that exactly 7 students will be left-handed. b. Find the mean and standard deviation. c. Determine the probability that at most 15 students will be left-handed d. Is it usual to have 5 left-handed students in the statistics class? Justify your answer.
"Eleven percent of students at a latge high school are left handed. A statistics teacher selects...
"Eleven percent of students at a latge high school are left handed. A statistics teacher selects a random sample of 100 students and records X= the number of left-handed students in the sample" 1) Caculate the mean and standard deviation of the sampling distribution of X.
Given that 10% of us are left-handed and some desks are amde for left-handed students. To...
Given that 10% of us are left-handed and some desks are amde for left-handed students. To determine the number ofsuch desks to order and place in our classrooms, we want to compute the probability of getting exactly 3 left-handed studetns in a class of 15. a) This a a binomial experiemnt. Explain why. b) Use the binomial probability formula to find the probability of getting 3 left-handed students in a class of 15 students, given that 10% of us are...
a.) A study of class attendance and grades among first-year students at a state university showed...
a.) A study of class attendance and grades among first-year students at a state university showed that in general students who attended a higher percent of their classes earned higher grades. Class attendance explained r2 = 64% of the variation in grade index among the students. What is the numerical value of the correlation between percent of classes attended and grade index? (Use 2 decimal places.) b.) An opinion pollster asks 100 college seniors how they view their job prospects....
On an examination in Statistics 12 students in one class had a mean grade of 78...
On an examination in Statistics 12 students in one class had a mean grade of 78 with a standard deviation of 6, while 15 students in another class had a mean grade of 74 with a standard deviation of 8. Using a significance level of 0.05, determine whether the first group is superior to the second group.
Statistics professor has 115 students in a statistics class and would like to estimate the number...
Statistics professor has 115 students in a statistics class and would like to estimate the number of hours each student studying for the last exam. A random sample of 41 students was found to study an average of 7.3 hours with a standard deviation of 1.9 hours. The 95% confidence interval to estimate the average number of hours studying for the exam is
The mean class grade for all health sciences statistics students from previous semesters was 85% with...
The mean class grade for all health sciences statistics students from previous semesters was 85% with a standard deviation of 7%. We want to know if the current class of statistics students is significantly different from the previous years’ population. The current mean class grade is 87% with a standard deviation of 5%. There are 30 students in the class. Use α = .10. a. What is the SEM? b. What is the critical value? c. What is the one-sample...
1 sample of students' scores was taken from a hybrid class and another sample taken from...
1 sample of students' scores was taken from a hybrid class and another sample taken from a standard lecture format class. Both classes were for the same subject. The mean course score in percent for the 24 hybrid students is 68 with a standard deviation of 9. The mean scores of the 24 students form the standard lecture class was 83 percent with a standard deviation of 7. find the Test Statistics to test the null hypothesis H0 : µ1...
Suppose that 15% of Avocado Park Students are currently homeless. Tony's morning statistics class has 32...
Suppose that 15% of Avocado Park Students are currently homeless. Tony's morning statistics class has 32 students in it. A. How large does the population of Avocado Park College need to be for the housing statuses of the students in Tony's morning statistics class to be considered independent? B. Is the number of homeless students in Tony's morning statistics class a binomial variable? How would you know? C. What is the probability that none of Tony's morning statistics students are...
1. A statistics professor is examining if using the book in his class has any impact...
1. A statistics professor is examining if using the book in his class has any impact on student test scores. For a sample of 30 Statistics students who were required to buy and read the book for class, final semester grades were measured at the end of the semester. The mean final grade for this class was 87. If the mean final grade for all the previous classes (where students had not been required to use the book) was 83...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT