
Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are lefthanded. (b) Compute the probability ...

Suppose that you are in a class of 29 students and it is assumed that approximately 16% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are lefthanded. (b) Compute the probability ...

Suppose that you are in a class of 31 students and it is assumed that approximately 10% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are lefthanded. (b) Compute the probability ...

Suppose that you are in a class of 28 students and it is assumed that approximately 8% of the population is lefthanded. (Give your answers correct to three decimal place. Compute the probability that exactly five students are lefthanded

Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are lefthanded. Incorrect: 9.936 (b) Compute ...


Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are lefthanded. Answer .161 (b) Compute the ...

Suppose that you are in a class of 32 students and it is assumed that approximately 9% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are lefthanded. Incorrect: Your answer is ...

Posted by Nora 56 on Sunday, June 2, 2013 at 7:32pm. Sorry to repost but no one answered after I posted on the 2nd,please help, Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is lefthanded. (Give your answers correct ...

Can someone answer a question similar to a and b so I can use as an example. Consider the following binomial random variables. (a) The number of tails seen in 47 tosses of a quarter. (i) Find the mean. (Give your answer correct to one decimal place.) (ii) Find the standard ...

In a certain class 27% of the students are lefthanded. suppose that a random sample of 53 students is selected. Find the mean number of lefthanded students in the class. Round your answer to the nearest integer. Pls help!

In a certain class 27% of the students are lefthanded. suppose that a random sample of 53 students is selected. Find the mean number of lefthanded students in the class. Round your answer to the nearest integer.

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained. (c) Find the standard error of this sampling distribution. (Give your answer correct ...

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained. (b) Find the proportion of male college students whose height is greater than 69 ...

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained. (b) Find the proportion of male college students whose height is greater than 69 ...

A random sample of size 26 is to be selected from a population that has a mean ì = 46 and a standard deviation ó of 15. (a) This sample of 26 has a mean value of x, which belongs to a sampling distribution. Find the shape of this sampling distribution. skewed right ...


Left hand! right hand Female___!________ Male_____!_______ Total18 ! 122 The incomplete table above summarizes the number of lefthanded students and righthanded students by gender for the eighth grade students at Keisel Middle School. There are 5 times as many righthanded ...

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained (e) Find P(x > 70). (Give your answer correct to four decimal places.) (f) Find P(x...

The incomplete table below summarizes the number of lefthanded students and righthanded students by gender for the eighth grade students at Keisel Middle School. There are 6 times as many righthanded female students as there are lefthanded female students, and there are 8 ...

In the fourth grade class at Baker Elementary, 9 students are lefthanded. The fifth grade has 7 lefthanded students and the sixth grade has 6. The number of students in the fourth grade is 3 times the number of lefthanded students in the class. The sixth grade has 3 more ...

Suppose a simple random sample of size n=150 is obtained from a population whose size is N=20,000 and whose population proportion with a specified characteristic is p=0.8. Please answer questions (1) through (5) below. (1) Describe the sampling distribution of p^ (choose the ...

For every left handed person, there are 4 right handed persons. If there are 30 students in the class predict the number of students who are right handed.

Ten percent of Americans adults are lefthanded. A statistics class has 50 students in attendance. Find the standard deviation for the number of lefthanded students in such classes of 50 students

Could someone work one of these out so I can use as example. A sample of 59 nightschool students' ages is obtained in order to estimate the mean age of nightschool students. x = 25 years. The population variance is 20. (a) Give a point estimate for ì. (Give your answer ...

A sample of 65 nightschool students' ages is obtained in order to estimate the mean age of nightschool students. x bar = 25.2 years. The population variance is 28. (a) Give a point estimate for ì. (Give your answer correct to one decimal place.) Correct: Your answer is ...

for every lefthanded person there are about 4 righthanded persons. If there are 30 studentsa in a class write and solve a proportion to predict the number of students who are righthanded.


in a class there are 17 right handed students and 3 left handed students, what percent of the class is right handed?

Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (a) Construct a scatter diagram of the given bivariate data. (Do this on paper. Your instructor may ask you to turn in this work.) (b) Calculate the covariance. (Give ...

Can some one help me with this one??? Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (a) Construct a scatter diagram of the given bivariate data. (Do this on paper. Your instructor may ask you to turn in this work...

in a class there are 17 right handed students and 3 left handed students, what fraction of the class is lefthanded?

A sample of 51 nightschool students' ages is obtained in order to estimate the mean age of nightschool students. x = 26 years. The population variance is 19. (a) Give a point estimate for μ. (Give your answer correct to one decimal place.) (b) Find the 95% confidence ...

suppose we wish to construct a confidence interval for a population proportion p. if we sample without replacement from a relatively small population of size N, the margin or error E is modified to include the finite population correction factor as follows: E=Za/2 pq/n Nn/N1...

A computer takes 2 seconds to compute a particular definite integral accurate to 4 decimal places. Approximately how long does it take the computer to get 12 decimal places of accuracy using each of the LEFT, MID, and SIMP rules? Round your answers to one decimal place. (a) ...

A study shows that 10% of americans are lefthanded. Find the probability that at most one student is left handed in a class of 20 students.

The middle 69% of a normally distributed population lies between what two standard scores? (Give your answers correct to two decimal places.)0.31 and 1.69 was my answers and they are wrong????. .

Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (b) Calculate the covariance. (Give your answer correct to two decimal places.) 5.35 was my answer . (c) Calculate sx and sy. (Give your answers correct to three ...


Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (b) Calculate the covariance. (Give your answer correct to two decimal places.) (c) Calculate sx and sy. (Give your answers correct to three decimal places.) sx = sy...

What is the difference between "Give your answer correct to two decimal places." and "Round your answers to two decimal places." ?? Are they the same thing or do the answers differ?

Year 2003 2004 2005 2006 Populatation 22.12 22.49 22.86 23.41 A. divide the population for each year by the population in the preceeding year. Round to the two decimal places and show the Texas population increase that is approximately geometric. 1.01 B. Write the general term...

Year 2003 2004 2005 2006 Populatation 22.12 22.49 22.86 23.41 A. divide the population for each year by the population in the preceeding year. Round to the two decimal places and show the Texas population increase that is approximately geometric. 1.01 B. Write the general term...

Assume that 90% of the general population is righthanded. Suppose that 100 students are randomly selected. what is the probability that 84% or more is right handed

The middle 69% of a normally distributed population lies between what two standard scores? (Give your answers correct to two decimal places.) 0.69 and 0.31

Suppose a simple random sample of size n=150 is obtained from a population whose size is N=20,000 and whose population proportion with a specified characteristic is p=0.8. Please answer questions (1) through (5) below. (1) Describe the sampling distribution of p^ (choose the ...

Suppose the following data are selected randomly from a population of normally distributed values. 42 51 43 48 41 57 54 39 45 48 45 39 46 Construct a 95% confidence interval to estimate the population mean. Round the intermediate values to 2 decimal places. Round your answers ...

Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (a) Construct a scatter diagram of the given bivariate data. (Do this on paper. Your instructor may ask you to turn in this work.) (b) Calculate the covariance. (Give ...

A preliminary survey shows that 35% of college students smoke. In a class of 42 students, what is the probability that more than half the students smoke? Use Appendix B.1 for the zvalues. (Round the zvalue to 2 decimal places and the final answer to 4 decimal places.)


the probability that an imdividual is lefthanded is 0.30 in a class of 25 students, what is the the mean and standard deviation of the number of lefthanders in the class

Ms. shoemaker has 35 students in her classroom. Of those students 6/7 are right handed and 4/5 of te right handed students have brown eyes. How many right handed brown eyed students are in the class.

Consider the following set of data. (18, 12), (29, 48), (65, 29), (82, 24), (115, 56), (124, 13) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) . (b) Calculate the standard deviation of the six xvalues and the standard ...

Consider the following set of data. (18, 12), (29, 48), (65, 29), (82, 24), (115, 56), (124, 13) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) (b) Calculate the standard deviation of the six xvalues and the standard ...

In Mrs. Wallace's science class one half of the students are boys of the boys 1/8 or lefthanded what fraction of the students and Mrs. Wallace's science class are left handed

A population has a standard deviation ó of 28 units. (Give your answers correct to two decimal places.) (a) Find the standard error for the mean if n = 10. SD/Sqrt of N = 28/10^=.28

in a sample of 1000 people <525 men and 475 women>,113 are left handed<63 men and 50 women>.the results of the sample are shown in the table.find the probability that a randomly selected person is a left handed,given that she is a woman.<round to 3 decimal places

a university surveys a randomly selected group of 250 freshmen. In the group, 20 of the freshmen were lefthanded. If there are 8,000 in the freshman class, what is the best prediction fo the number of lefthanded freshmen students? THANK YOU!

Approximately oneseventh of the people in the United States are lefthanded. The population of the United States is about 300 million. Write and solve an equation to estimate howmany people in the United States are left handed.

A machine produces parts with lengths that are normally distributed with ó = 0.52. A sample of 16 parts has a mean length of 75.07. (a) Give a point estimate for ì. (Give your answer correct to two decimal places.) 75.07. (b) Find the 99% confidence maximum error of estimate...


Complete the hypothesis test with alternative hypothesis ƒÊd ‚ 0 based on the paired data that follows and d = O  Y. Use ƒ¿ = 0.01. Assume normality. Oldest 188 174 192 196 65 Youngest 186 168 199 199 69 (a) Find t. (Give your answer correct to two decimal places.) 0...

the ratio of right handed to left handed students in the school was 3 to 14. if the total number in both categories was 714 how many right handed students were in the school? please help its due tomorrow! i totally forgot about the extra homework my teacher assigned.

Consider the following set of data. (18, 12), (29, 48), (65, 29), (82, 24), (115, 56), (124, 13) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) Incorrect: Your answer is incorrect. . (b) Calculate the standard deviation of ...

A history class is comprised of 5 female and 8 male students. If the instructor of the class randomly chooses 8 students from the class for an oral exam, what is the probability that 2 female students and 6 male students will be selected? Round your answer to decimal places.

210 kids in class. one out of 7 in left handed the rest in right handed. how many are right handed.

A psychology class is comprised of 4 female and 6 male students. If the instructor of the class randomly chooses 6 students from the class for an oral exam, what is the probability that 2 female students and 4 male students will be selected? Round your answer to 3 decimal places

URGENT! In a school, 8% of students are left handed. If 50 classes of 20 students are randomly selected, what is the probability of 10 classes have no left handed students? I know that this is a binomial distribution question, but I can't seem to do this question even though I...

A history class is comprised of 6 female and 9 male students. If the instructor of the class randomly chooses 5 students from the class for an oral exam, what is the probability that 2 female students and 3 male students will be selected? Round your answer to 3 decimal places...

The population (in millions) and the violent crime rate (per 1000) were recorded for 10 metropolitan areas. The data are shown in the following table. Do these data provide evidence to reject the null hypothesis that ƒÏ = 0 in favor of ƒÏ ‚ 0 at ƒ¿ = .05? (Give your ...

A married couple met at Juanita College in Huntingdon, Pennslvania. They are both lefthanded,and they have set up a scholarship for needy left handed students attending Juanita. Here is my answer does it make sense? A married couple who met at Juniata College in Huntington, ...


People can be lefthanded, righthanded or ambidextrous. The number of boys in Canadian secondary schools who are left handed is about 1/7 the number of boys who are righthanded. About 11% of boys are lefthanded. Write and solve an equation to determine what percent of boys ...

The voltage V across a charged capacitor is given by V(t) = 2e^0.16t volts, where t is in seconds (A) what is the voltage V(5) after 5 seconds? Find the time t when the voltage will be 1 volt Enter your answers to two decimal places V(5) approximately ___________ volts t ...

he world population at the beginning of 1990 was 5.3 billion. Assume that the population continues to grow at the rate of approximately 2%/year and find the function Q(t) that expresses the world population (in billions) as a function of time t (in years), with t = 0 ...

About 13% of the population is left handed. If two people are randomly selected what is the probability that both are left handed?

Thank you in advance for anyone able to help me with this... In a sample of 67 randomly selected students, 27 favored the amount being budgeted for next year's intramural and interscholastic sports. Construct a 98% confidence interval for the proportion of all students who ...

The world population at the beginning of 1990 was 5.3 billion. Assume that the population continues to grow at the rate of approximately 2%/year and find the function Q(t) that expresses the world population (in billions) as a function of time t (in years), with t = 0 ...

if 11% of the population is left handed, what is the porbability that as least one of the first 20 strangers you meet is left handed

Consider the following. P(A) = 0.27 and P(B) = 0.36, A and B are mutually exclusive events (a) Find the probability P(A). (Give your answer correct to two decimal places.) (b) Find the probability P(B). (Give your answer correct to two decimal places.) (c) Find the probability...

Consider the following. P(A) = 0.27 and P(B) = 0.36, A and B are mutually exclusive events (a) Find the probability P(A). (Give your answer correct to two decimal places.) (b) Find the probability P(B). (Give your answer correct to two decimal places.) (c) Find the probability...

A popmusic record firm wants the distribution of lengths of cuts on its record to have an average of 129 seconds and a standard deviation of 10 seconds so that disc jockeys will have plenty of time for commercials within each 5minute period. The population times for cuts is ...


Three hundred twelve viewers were asked if they were satisfied with TV coverage of a recent disaster. Gender Female Male Satisfied 90 53 Not Satisfied 124 45 (a) Find P(satisfied). (Give your answer correct to two decimal places.) (b) Find P(satisfied  female). (Give your ...

The population (in millions) and the violent crime rate (per 1000) were recorded for 10 metropolitan areas. The data are shown in the following table. Do these data provide evidence to reject the null hypothesis that ƒÏ = 0 in favor of ƒÏ ‚ 0 at ƒ¿ = .05? (Give your ...

I need someone to tell me how to set these up please? 1. A box contains 4 quarters. 2 of the quarters have the American eagle on the back. Suppose you draw 2 quarters at random with replacement. a. What's the probability that both have the American eagle on the back? b. What's...

The state bridge design engineer has devised a plan to repair North Carolina's 4420 bridges that are currently listed as being in either poor or fair condition. The state has a total of 13,168 bridges. Before the governor will include the cost of this plan in his budget, he ...

Three hundred twelve viewers were asked if they were satisfied with TV coverage of a recent disaster. Gender Female Male Satisfied 90 53 Not Satisfied 124 45 (a) Find P(satisfied). (Give your answer correct to two decimal places.) (b) Find P(satisfied  female). (Give your ...

the population of deer in a certain area of cabarrus county grows proportional to itself. the population of deer in 2000 was found to be 45, and by 2008 the population had grown to 65. Find the growth constant k(rounded to 6 decimal places), and the expected deer population in...

Consider the following set of data. (25, 6), (25, 51), (62, 34), (84, 15), (112, 57), (122, 14) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) 40.17 (b) Calculate the standard deviation of the six xvalues and the standard ...

The population (in millions) and the violent crime rate (per 1000) were recorded for 10 metropolitan areas. The data are shown in the following table. Do these data provide evidence to reject the null hypothesis that ƒÏ = 0 in favor of ƒÏ ‚ 0 at ƒ¿ = .05? (Give your ...

1. For the following research question, specify the parameter and give the null and alternative hypotheses. "Is there a difference in the proportions of male and female college students who smoke cigarettes? 2. For the following research question, specify the parameter and ...

Onefifth of the population is lefthanded. A random sample of 20 people is selected. a) What is the probability that no more than 6 of the next 20 people are lefthanded. b) What is the probability that at least 4 of the next 20 people are lefthanded.


Consider the following. P(A) = 0.31 and P(B) = 0.41, and P(A and B) = 0.1271 (a) What is P(A  B)? (Give your answer correct to two decimal places.) (b) What is P(B  A)? (Give your answer correct to two decimal places.) (c) Are A and B independent? yes no cannot be determined

Consider the following. P(A) = 0.31 and P(B) = 0.41, and P(A and B) = 0.1271 (a) What is P(A  B)? (Give your answer correct to two decimal places.) (b) What is P(B  A)? (Give your answer correct to two decimal places.) (c) Are A and B independent? yes no cannot be determined

Consider the following. P(A) = 0.27 and P(B) = 0.36, A and B are mutually exclusive events (a) Find the probability P(A). (Give your answer correct to two decimal places.) (b) Find the probability P(B). (Give your answer correct to two decimal places.) (c) Find the probability...

A single die is rolled. (a) What is the probability that the number on top is a 3. (Give your answer correct to two decimal places.) (b) What is the probability that the number on top is an odd number. (Give your answer correct to two decimal places.) (c) What is the ...

A single die is rolled. (a) What is the probability that the number on top is a 3. (Give your answer correct to two decimal places.) (b) What is the probability that the number on top is an odd number. (Give your answer correct to two decimal places.) (c) What is the ...

A single die is rolled. (a) What is the probability that the number on top is a 3. (Give your answer correct to two decimal places.) (b) What is the probability that the number on top is an odd number. (Give your answer correct to two decimal places.) (c) What is the ...

A politician claims that she will receive 65% of the vote in an upcoming election. The results of a properly designed random sample of 100 voters showed that 49 of those sampled will vote for her. Is it likely that her assertion is correct at the 0.05 level of significance? (a...

Consider a normal population with ì = 49 and ó = 6. Calculate the zscore for an x of 44.2 from a sample of size 22. (Give your answer correct to two decimal places.) 3.75 is what I got.. and I have only one more try on this one.

A class survey in a large class for firstyear college students asked, "About how many minutes do you study on a typical weeknight?" The mean response of the 463 students was x = 118 minutes. Suppose that we know that the study time follows a Normal distribution with standard ...

Complete the following hypothesis test: Ho: ì = 52, Ha: ì < 52, á = 0.01 using the data below. 43 48 44 48 42 60 54 44 50 35 48 58 (a) Find t. (Give your answer correct to two decimal places.) 2.05 . (ii) Find the pvalue. (Give your answer correct to four decimal ...


Consider the following. (Give your answers correct to four decimal places.) (d) Find P(z > 2.44). I got .9927

(c) The number of cars found to have unsafe tires among the 379 cars stopped at a roadblock for inspection (assume that 15% of all cars have one or more unsafe tires). (i) Find the mean. (Give your answer correct to one decimal place.) 56.85. (ii) Find the standard deviation...

Calculate the population within a 6 mile radius of the city center if the radial population density is ρ(r) = 6(5+r2)1/3 (in thousands per square mile). (Use decimal notation. Give your answer to two decimal places.)

Consider the given function. f(x) = 3 sin(6x) text(, ) 0<=x<=(3pi)/2 (a) Find the Riemann sum with six terms, taking the sample points to be right endpoints. (Give your answer correct to six decimal places.) R6 = (b) Repeat part (a) with midpoints as sample points. (Give...

Consider the given function. f(x) = 3 sin(6x) text(, ) 0<=x<=(3pi)/2 (a) Find the Riemann sum with six terms, taking the sample points to be right endpoints. (Give your answer correct to six decimal places.) R6 = (b) Repeat part (a) with midpoints as sample points. (Give...
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