Homework Answers
We want to see that how much time a college student spend in studying for weekly classes .
We rook 200 student for study that is called our sample . We asked them how much they study .
So we found a student on an average study for 15 hours in a week .. we can give or take 5 hours .
That most of the student study between 10 and 20 hours weekly
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A sample of 200 college students are asked about how much time they spend studying for...
A recent survey asked college students how much time they spend studying each week. The results...
A recent survey asked college students how much time they spend studying each week. The results showed a mean of 10 hours with a standard deviation of 2 hours. Complete parts (a) through (c) below. (a) Find the probability that a randomly selected student would spend less than 7 hours studying per week. O A. 0.933 OB. 0.500 OC. 0.067 OD. 0.333 (b) What percent of students spend more than 12 hours studying per wook? O A. 80.0% OB. 15.9%...
A small group of students was asked, "How many hours do you spend studying in a...
A small group of students was asked, "How many hours do you spend studying in a typical week?" The results were: 10, 10, 25, 8, 5, 5. What is the count A small group of students was asked, "How many hours do you spend studying in a typical week?" The results were: 10, 10, 25, 8, 5, 5. What is the maximum? A small group of students was asked, "How many hours do you spend studying in a typical week?"...
1. To determine the average number of hours spent studying by college students per week, a...
1. To determine the average number of hours spent studying by college students per week, a sample of 39 students was randomly selected, and found to spend an average of 17.1 hours per week, with a standard deviation of 4.3 hours. Find the 90% confidence interval for the mean number of hours spent studying per week by all college students. What is the upper and lower bound? 2. If I asked a random student how many hours they study per...
An educational research group wants to know how many hours college students spend studying outside of...
An educational research group wants to know how many hours college students spend studying outside of class per week. If they survey 100 students and find an average 10.5 hours of studying a week, with a standard deviation of 2.25, find a 98% confidence interval for the true average number of hours spent studying. Answer choices: 10.5±.324 10.5±.225 None of these 10.5±.482 10.5±.524
The times that college students spend studying per week have a distribution skewed to the right...
The times that college students spend studying per week have a distribution skewed to the right with a mean of 8.6 hours and a standard deviation of 2.8 hours. Find the probability that the mean time spent studying per week for a random sample of 49 college students would be between 8.2 and 8.9 hours. Round your answer to two decimal places.
The times that college students spend studying per week have a distribution skewed to the left...
The times that college students spend studying per week have a distribution skewed to the left with a mean of 8.4 hours and a standard deviation of 2.1 hours. Find the probability that the mean time spent studying per week for a random sample of 65 college students would be a. between 7.9 and 8.6 hours. Round your answer to two decimal places. P= b. less than 8.2 hours. Round your answer to two decimal places. P=
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 23 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and a standard deviation of 3.4 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and...
Chapter 07, Section 7.4, Problem 036 The times that college students spend studying per week have...
Chapter 07, Section 7.4, Problem 036 The times that college students spend studying per week have a distribution skewed to the left with a mean of 8.2 hours and a standard deviation of 2.8 hours. Find the probability that the mean time spent studying per week for a random sample of 65 college students would be a. between 7.7 and 8.4 hours. Round your answer to two decimal places. b. less than 8.1 hours. Round your answer to two decimal...
A sample of 200 high school students were asked how many hours per week they spend...
A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watching Television Number of hours Frequency 0.0-3.9 38 4.0.7.9 38 8.0-11.9 34 12.0-15,9 23 16.0-19.9 24 20.0-23.9 23 24.0-27.9 20
Random sample of college students were asked how many hours they spent studying per day
Random sample of college students were asked how many hours they spent studying per day. The results summarized by sex are given in the following table. Do these data provide evidence at the 0.01 level of significance to conclude that sex and amount of time spent studying are dependent? Begin by filling in the following tables.
A recent survey asked college students how much time they spend studying each week. The results showed a mean of 10 hours with a standard deviation of 2 hours. Complete parts (a) through (c) below. (a) Find the probability that a randomly selected student would spend less than 7 hours studying per week. O A. 0.933 OB. 0.500 OC. 0.067 OD. 0.333 (b) What percent of students spend more than 12 hours studying per wook? O A. 80.0% OB. 15.9%...
The times that college students spend studying per week have a distribution skewed to the right with a mean of 8.6 hours and a standard deviation of 2.8 hours. Find the probability that the mean time spent studying per week for a random sample of 49 college students would be between 8.2 and 8.9 hours. Round your answer to two decimal places.
The times that college students spend studying per week have a distribution skewed to the left with a mean of 8.4 hours and a standard deviation of 2.1 hours. Find the probability that the mean time spent studying per week for a random sample of 65 college students would be a. between 7.9 and 8.6 hours. Round your answer to two decimal places. P= b. less than 8.2 hours. Round your answer to two decimal places. P=
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 23 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and a standard deviation of 3.4 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and...
Chapter 07, Section 7.4, Problem 036 The times that college students spend studying per week have a distribution skewed to the left with a mean of 8.2 hours and a standard deviation of 2.8 hours. Find the probability that the mean time spent studying per week for a random sample of 65 college students would be a. between 7.7 and 8.4 hours. Round your answer to two decimal places. b. less than 8.1 hours. Round your answer to two decimal...
A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watching Television Number of hours Frequency 0.0-3.9 38 4.0.7.9 38 8.0-11.9 34 12.0-15,9 23 16.0-19.9 24 20.0-23.9 23 24.0-27.9 20
Random sample of college students were asked how many hours they spent studying per day. The results summarized by sex are given in the following table. Do these data provide evidence at the 0.01 level of significance to conclude that sex and amount of time spent studying are dependent? Begin by filling in the following tables.
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