in determining whether age of a student influences number of hours of sleep obtained. The researcher...
Homework Answers
Here we have two independent groups: One is "elementary school students " and other is " high school students "
So we need to use independent sample t test.
Correct option is c.
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determining whether age of a student influences number of hours of
sleep obtained. The researcher...
3) A researcher is interested in determining whether the average wait time for pick-up differs significantly...
3) A researcher is interested in determining whether the average wait time for pick-up differs significantly between Uber and Lyft in his neighborhood. The researcher records the average wait time for the last 15 trips he has taken from home (7 Uber, 8Lyft). Based on the question the res earcher seeks to answer and the type of data collected, what kind of statistical test should the researcher conduct? (1 point Single-sample t test Correlated-groups t test Independent-groups t test ANOVA...
A survey was conducted to determine whether hours of sleep per night are independent of age....
A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. Sample data follow Age...
A survey was conducted to determine whether hours of sleep per night are independent of age....
A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. sample data follow. Age...
A survey was conducted to determine whether hours of sleep per night are independent of age....
A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. Sample data follow. Hours...
1. A sleep researcher believes that people deprived of sleep for 24 hours will perform worse...
1. A sleep researcher believes that people deprived of sleep for 24 hours will perform worse on a short-term memory test than a group not deprived of sleep. She randomly assigns some volunteers to the sleep deprivation group and others to the control group and intends to compare their scores on the short-term memory test. Parametric Test: repeated-measures t-test independent-measures t test Nonparametric Test: Kruskal-Wallis test repeated-measures t-test Mann-Whitney U-test 2. An educational psychologist believes using flash cards to memorize...
It is recommended that adults get 8 hours of sleep each night. A researcher hypothesized college...
It is recommended that adults get 8 hours of sleep each night. A researcher hypothesized college students got less than the recommended number of hours of sleep each night, on average. The researcher randomly sampled 20 college students and calculated a sample mean of 7.5 hours per night. If the researcher wanted to perform a one-sample t-test, which of the following is a correct statement? Choose the correct answer below. A. The distribution of sample means will be normal even...
Confidence Intervals using the one-sample t-statistic A researcher was interested in estimating the average number hours...
Confidence Intervals using the one-sample t-statistic A researcher was interested in estimating the average number hours of sleep of her graduate statistics students. The researcher obtained a random sample of 6 graduate statistics students and asked them the number of hours of sleep. She then calculated a 95% confidence interval to estimate the population average number of hours of sleep The data appear in the table below. Hours of sleep 19 21 21 30 21 20
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are independent of age (Newsweek, January 19, 2004). The following show the hours of sleep on weeknights for a sample of individuals age 49 and younger and for a sample of individuals age 50 and older Age 49 or younger 50 or older a. Conduct a test of independence to determine whether the hours of sleep on weeknights are independent of age. Use α =...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are Independent of age (Newsweek, January 19, 2004). The following show the hours of sleep on weeknights for a sample of Individuals age 49 and younger and for a sample of individuals age 50 and older. Hours of Sleep 6 to 6.9 65 Age 19 or younger 50 or older a, conduct a test of independence to determine whether the hours of sleep on weeknights...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are independent of age (Newsweek, January 19, 2004). The following show the hours of sleep on weeknights for a sample of individuals age 49 and younger and for a sample of individuals age 50 and older Hours of Sleep 6 to 6.9 63 57 Fewer than 6 Age 49 or younger 50 or older a. Conduct a test of independence to determine whether the hours...
3) A researcher is interested in determining whether the average wait time for pick-up differs significantly between Uber and Lyft in his neighborhood. The researcher records the average wait time for the last 15 trips he has taken from home (7 Uber, 8Lyft). Based on the question the res earcher seeks to answer and the type of data collected, what kind of statistical test should the researcher conduct? (1 point Single-sample t test Correlated-groups t test Independent-groups t test ANOVA...
A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. Sample data follow Age...
A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. sample data follow. Age...
1. A sleep researcher believes that people deprived of sleep for 24 hours will perform worse on a short-term memory test than a group not deprived of sleep. She randomly assigns some volunteers to the sleep deprivation group and others to the control group and intends to compare their scores on the short-term memory test. Parametric Test: repeated-measures t-test independent-measures t test Nonparametric Test: Kruskal-Wallis test repeated-measures t-test Mann-Whitney U-test 2. An educational psychologist believes using flash cards to memorize...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are independent of age (Newsweek, January 19, 2004). The following show the hours of sleep on weeknights for a sample of individuals age 49 and younger and for a sample of individuals age 50 and older Age 49 or younger 50 or older a. Conduct a test of independence to determine whether the hours of sleep on weeknights are independent of age. Use α =...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are Independent of age (Newsweek, January 19, 2004). The following show the hours of sleep on weeknights for a sample of Individuals age 49 and younger and for a sample of individuals age 50 and older. Hours of Sleep 6 to 6.9 65 Age 19 or younger 50 or older a, conduct a test of independence to determine whether the hours of sleep on weeknights...
The National Sleep Foundation used a survey to determine whether hours of sleeping per night are independent of age (Newsweek, January 19, 2004). The following show the hours of sleep on weeknights for a sample of individuals age 49 and younger and for a sample of individuals age 50 and older Hours of Sleep 6 to 6.9 63 57 Fewer than 6 Age 49 or younger 50 or older a. Conduct a test of independence to determine whether the hours...
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