In a large sample hypothesis test for comparisons of µ, a teacher is interested in learning...
- In a large sample hypothesis test for comparisons of µ, a
teacher is interested in learning if there is a difference in the
average reading speed of sophomores. Test at the .10 level
- Reading Speeds in minutes
|
n |
Xbar |
s |
|
|
Males |
65 |
12 |
1 |
|
Females |
65 |
9 |
1 |
Homework Answers
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In a large sample hypothesis test for comparisons of µ, a
teacher is interested in learning...
An elementary school teacher is interested in knowing if there is a significant difference in the...
An elementary school teacher is interested in knowing if there is a significant difference in the average reading speed of fifth-grade boys and girls. She randomly selects 36 fifth grades boys and 36 fifth grade girls for the study. Each student is given several pages of the same book to read and the time it takes them to complete the reading is recorded in minutes. Boys Girls Sample Size 36 36 Sample Mean reading speed (in minutes) 11 12 Population...
An elementary school teacher is interested in knowing if there is a significant difference in the...
An elementary school teacher is interested in knowing if there is a significant difference in the average reading speed of fifth-grade boys and girls. She randomly selects 36 fifth grades boys and 36 fifth grade girls for the study. Each student is given several pages of the same book to read and the time it takes them to complete the reading is recorded in minutes. Boys Girls Sample Size 36 36 Sample Mean reading speed (in minutes) 11 12 Population...
An elementary school teacher is interested in knowing if there is a significant difference in the...
An elementary school teacher is interested in knowing if there is a significant difference in the average reading speed of fifth-grade boys and girls. She randomly selects 36 fifth grades boys and 36 fifth grade girls for the study. Each student is given several pages of the same book to read and the time it takes them to complete the reading is recorded in minutes. Boys Girls Sample Size 36 36 Sample Mean reading speed (in minutes) 11 12 Population...
The director of transportation of a large company is interested in the usage of her van...
The director of transportation of a large company is interested in the usage of her van pool. She considers her routes to be divided into local and non-local. She is particularly interested in learning if there is a diference in the proportion of males and temales who use the local routes. She takes a sample of a day's riders and finds the tolowing Female 36 25 Male Loca 35 Non-Loca She will use this information to perform a chi-square hypothesis...
Imagine that you are next interested in discovering whether or not there are differences in minutes...
Imagine that you are next interested in discovering whether or
not there are differences in minutes spent exercising per day
between males (coded as “1”) and females (coded as “2”) in your
sample. You hypothesize that males exercise more minutes per day
than females. You performed descriptive analyses and found that
minutes spent exercising was approximately normally distributed in
both groups (skewness = .26 for males, skewness = .07 for females).
You therefore decided to perform an independent samples t...
The UGA Journalism Department is interested in determining if there is a significant difference in the...
The UGA Journalism Department is interested in determining if
there is a significant difference in the number of hours, on
average per week, that UGA males and UGA female students spend
reading any online or printed newspaper. Randomly selected students
at UGA were asked how many hours per week they read any online or
printed newspaper, their age, and gender. The 95% confidence
interval for reading newspapers on F - M is (-1.2, 1.2).
1) What would this interval let...
Use the following to answer questions 1 and 2. Consider the hypothesis test H0: µ ≥...
Use the following to answer questions 1 and 2. Consider the hypothesis test H0: µ ≥ 65, Ha: µ < 65. From a sample of 15 observations, the sample mean was 63 and the sample standard deviation was 4. Use level of significance 0.01. Compute the test statistic. Give your answer to 2 decimal places.
The UGA Journalism Department is interested in determining if there is a significant difference in the number of hours,...
The UGA Journalism Department is interested in determining if
there is a significant difference in the number of hours, on
average per week, that UGA males and UGA female students spend
reading any online or printed newspaper. Randomly selected students
at UGA were asked how many hours per week they read any online or
printed newspaper, their age, and gender. The 95% confidence
interval for reading newspapers on F - M is (-1.5, 1.1).
1) What would this interval let...
This question is based on Ch10, but we can solve it using our knowledge from Ch9....
This question is based on Ch10, but we can solve it using our knowledge from Ch9. In Ch 8, we created confidence intervals to test whether the means differed in a statistically significant manner between two independent (unrelated) populations, like males and females. The sample point estimator in the confidence interval was the difference in the sample means between the 2 samples (xbar - ybar). We created a confidence interval of the form: (xbar-ybar) +/- (Zα/2)[standard error of (xbar-ybar)] We...
A large university is interested in learning about the average time it takes students to drive...
A large university is interested in learning about the average time it takes students to drive to campus. The university sampled 238 students and asked each to provide the amount of time they spent traveling to campus, the average and standard deviation were 21.5 and 4.32 respectively.This variable, travel time, was then used conduct a test of hypothesis. The goal was to determine if the average travel time of all the university's students differed from 20 minutes. Use a level...
The director of transportation of a large company is interested in the usage of her van pool. She considers her routes to be divided into local and non-local. She is particularly interested in learning if there is a diference in the proportion of males and temales who use the local routes. She takes a sample of a day's riders and finds the tolowing Female 36 25 Male Loca 35 Non-Loca She will use this information to perform a chi-square hypothesis...
Imagine that you are next interested in discovering whether or
not there are differences in minutes spent exercising per day
between males (coded as “1”) and females (coded as “2”) in your
sample. You hypothesize that males exercise more minutes per day
than females. You performed descriptive analyses and found that
minutes spent exercising was approximately normally distributed in
both groups (skewness = .26 for males, skewness = .07 for females).
You therefore decided to perform an independent samples t...
The UGA Journalism Department is interested in determining if
there is a significant difference in the number of hours, on
average per week, that UGA males and UGA female students spend
reading any online or printed newspaper. Randomly selected students
at UGA were asked how many hours per week they read any online or
printed newspaper, their age, and gender. The 95% confidence
interval for reading newspapers on F - M is (-1.2, 1.2).
1) What would this interval let...
The UGA Journalism Department is interested in determining if
there is a significant difference in the number of hours, on
average per week, that UGA males and UGA female students spend
reading any online or printed newspaper. Randomly selected students
at UGA were asked how many hours per week they read any online or
printed newspaper, their age, and gender. The 95% confidence
interval for reading newspapers on F - M is (-1.5, 1.1).
1) What would this interval let...
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