Question

In early 2000, the researchers reported that at least 15% of middle-school students are overweight. To...

In early 2000, the researchers reported that at least 15% of middle-school students are overweight. To verify that these ratios have not changed, a random sample of 125 middle-school students was randomly selected and 12 were overweight. Discuss the results for different values of

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
A department of education reported that in​ 2007,69​% of students enrolled in college or a trade...
A department of education reported that in​ 2007,69​% of students enrolled in college or a trade school within 12 months of graduating from high school. In​ 2013, a random sample of 160 individuals who graduated from high school 12 months prior was selected. From this​ sample,110 students were found to be enrolled in college or a trade school. Complete parts Construct a 90​% confidence interval to estimate the actual proportion of students enrolled in college or a trade school within...
In an observational study involving a random sample of 1,000 high school students, researchers noted that...
In an observational study involving a random sample of 1,000 high school students, researchers noted that students who participated in elementary school music programs scored higher on math exams in later grades than students who did not participate in elementary school music programs. We would not want to conclude that participating in an elementary school music program causes higher math exam scores because A. everyone knows music has absolutely nothing to do with math. B. there are lurking variables that...
Teen obesity: The 2013 National Youth Risk Behavior Survey (YRBS) reported that 13.7% of U.S. students...
Teen obesity: The 2013 National Youth Risk Behavior Survey (YRBS) reported that 13.7% of U.S. students in grades 9 through 12 who attend public and private school were obese. After seeing extensive efforts to educate parents and teens on healthy lifestyles, we want to know if the proportion has decreased this year. We select a random sample of 200 U.S. students and find that 11% are obese. After performing the hypothesis test for p = 0.137 versus p < 0.137,...
An organization monitors many aspects of elementary and secondary education nationwide. Their 2000 numbers are often...
An organization monitors many aspects of elementary and secondary education nationwide. Their 2000 numbers are often used as a baseline to assess changes. In 2000, 31% of students had not been absent from school even once during the previous month. In the 2004 ​survey, responses from 8440 randomly selected students showed that this figure had slipped to 30%. Officials​ would, of​ course, be concerned if student attendance were declining. Do these figures give evidence of a change in student​ attendance?...
1. The reading speed of second grade students is approximately normal with a mean of 90...
1. The reading speed of second grade students is approximately normal with a mean of 90 words per minute (wpm) and a standard deviation of 10 wpm. A. What is the probability a randomly selected student will read more than 95 words per minute? B: What is the probability that a random sample of 12 second grade students results in a mean reading rate of more than 95 words per minute? c: What is the probability that a random sample...
In a recent year, grade 6 Michigan State public school students taking a mathematics assessment test...
In a recent year, grade 6 Michigan State public school students taking a mathematics assessment test had a mean score of 303.1 with a standard deviation of 36. Possible test scores could range from 0 to 1000. Assume that the scores were normally distributed. a. Find the probability that a student had a score higher than 295. b. Find the probability that a student had a score between 230 and 305. c. What is the highest score that would still...
67 randomly selected students were asked the number of pairs of shoes they have. Let X...
67 randomly selected students were asked the number of pairs of shoes they have. Let X represent the number of pairs of shoes. The results are as follows: # of Pairs of Shoes 4 5 6 7 8 9 10 11 12 13 14 Frequency 4 3 5 7 5 4 6 6 8 7 12 Round all your answers to 4 decimal places where possible. The mean is: The median is: The sample standard deviation is: The first quartile...
(A) The students at Littlewood Regional High School cut an average of 3.3 classes per month....
(A) The students at Littlewood Regional High School cut an average of 3.3 classes per month. A random sample of 117 seniors averages 3.8 cuts per month, with a standard deviation of 0.53. Are seniors significantly different from the student body as a whole? (HINT: the wording of the research question suggests a two-tailed test. This means that the alternative, or research, hypothesis in step 2 will be stated as H1: m ? 3.3 and that the critical region will...
6. (07.04 MC) Students at a local elementary school were randomly selected to participate in a...
6. (07.04 MC) Students at a local elementary school were randomly selected to participate in a reading fluency program. The program is designed to increase their reading fluency. A total of 17 students each took a pretest before the program and posttest after the program. The mean differences in the posttest and pretest is 11. The administration decided that all students in the school would participate in the program next school year. Let µA denote the mean score of the...
69 randomly selected students were asked the number of pairs of shoes they have. Let X...
69 randomly selected students were asked the number of pairs of shoes they have. Let X represent the number of pairs of shoes. The results are as follows: # of Pairs of Shoes 4 5 6 7 8 9 10 11 12 13 Frequency 6 6 6 10 5 6 8 7 5 10 Round all your answers to 4 decimal places where possible. The mean is: The median is: The sample standard deviation is: The first quartile is: The...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT