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show working -- 8. Mrs. Hoyer said that the mean time students Spend in the library is more than 3 hours. Using crit...
Do female college students spend more time than male college students watching TV? This was one...
Do female college students spend more time than male college students watching TV? This was one of the questions investigated by the authors of an article. Each student in a random sample of 46 male students at a university in England and each student in a random sample of 38 female students from the same university kept a diary of how he or she spent time over a three-week period. For the sample of males, the mean time spent watching...
Suppose data about the average number of hours people spend on social media websites at work...
Suppose data about the average number of hours people spend on social media websites at work is randomly collected for 5 days: 4, 4.5, 2.5, 2, 6 A.) If we assume this population is normally distributed, construct an 80% confidence interval for the population average amount of time people spend on social media websites at work. B.) Suppose I want to know more about how workers spend their time throughout the day. I want to test the claim that people...
A professor hypothesizes that students who earn a C or better in her class spend more...
A professor hypothesizes that students who earn a C or better in her class spend more time outside of class studying than students who receive a D or F. She collects the following data from two samples of students. What does she conclude? Number of hours studying per week for C or better students: 8, 4, 4, 2, 1, 5, 3, 2, 3 Number of hours studying per week for D or F students: 6, 2, 1, 0, 3, 2,...
It is believed that the average credit hours of students is more than 13 hours. Using...
It is believed that the average credit hours of students is more than 13 hours. Using a 0.10 level of significance, should the findings of the Class Survey support the belief that the average credit hours is more than 13 hours. The population standard deviation is not known. Data set(credit hours): Credit Hours 9 11 11 9 9 6 9 7 4 6 12 6 15 6 12 3 14 9 10 12 15 9 12 7 16 12 12...
Population o El Camino Students (P1- Students who use Instagram more than 7 hours per week, P2- Students who use...
Population o El Camino Students (P1- Students who use Instagram more than 7 hours per week, P2- Students who use Instagram less than 7 hours per week) Variable o Time Spent on Instagram per week (7+hours(yes) below 7(no)) GPA (3.0 or higher (yes) or below 3.0(no)) -Boolean Parameter: Proportion "P1, P2" The group MWA in Professor Love's class wants to test using a significance level of 0.05 if students at El Camino Community College who use Instagram for 7 hours...
You wish to test the claim that the mean GPA of night students is than 2.5...
You wish to test the claim that the mean GPA of night students is than 2.5 at the 0.05 significance level. Based on a sample of 45 people, the sample mean GPA was 2.47 with a standard deviation of 0.05. When finding the critical value and test statistic, which distribution would we be using? Normal distribution (invNorm for critical value) T distribution (invT for critical value) χ2χ2 distribution (invχχ for critical value) F distribution (invF for critical value)
A sample of students from an introductory psychology class were polled regarding the number of hours...
A sample of students from an introductory psychology class were polled regarding the number of hours they spent in studying for the last exam. All students anonymously submitted the number of hours on a 3 by 5 card. There were 24 individuals in the one section of the course polled. There data are below:4.5, 22, 7, 14.5, 9, 9, 3.5, 8, 11, 7.5, 18, 20, 7.5, 9, 10.5, 15, 19, 2.5, 5, 9, 8.5, 14, 20, 8. Test if the...
8. Darlene decides to spend two hours sunbathing in the afternoon rather than working at her...
8. Darlene decides to spend two hours sunbathing in the afternoon rather than working at her job which pays $10 per hour. Darlene’s tradeoff is A. the beautiful tan she obtains from sunbathing for those two hours. B. the $20 she could have earned working for two hours. C. nothing, because she enjoys sunbathing more than working. D. nothing, because she enjoys working more than sunbathing. E. nothing, because she spent $20 for suntan lotion and cold beverages to consume...
The president of a university claims that the mean time spent partying by all students at...
The president of a university claims that the mean time spent partying by all students at this university is not more than 7 hours per week. A random sample of 40 students taken from this university showed that they spent an average of 7.5 hours partying the previous week with a sample standard deviation of 2.3 hours. Use the p-value approach to test at a 5% significance level whether the president’s claim is true.
A survey is done to check how much time students actually spend working on the course...
A survey is done to check how much time students actually spend working on the course outside the class. 29 randomly selected students are asked: "How many hours of schoolwork do you do outside of class for each hour in class?" The sample mean of the 29 respondents is 1.2 hours with a standard deviation of 0.24 hours. 1. What is the standard error of the sample mean x¯x¯? [answer to 3 decimal places] 2. Suppose μμ denotes the population...
Population o El Camino Students (P1- Students who use Instagram more than 7 hours per week, P2- Students who use Instagram less than 7 hours per week) Variable o Time Spent on Instagram per week (7+hours(yes) below 7(no)) GPA (3.0 or higher (yes) or below 3.0(no)) -Boolean Parameter: Proportion "P1, P2" The group MWA in Professor Love's class wants to test using a significance level of 0.05 if students at El Camino Community College who use Instagram for 7 hours...
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