Question

For the following research question, state an appropriate null and alternate hypothesis and determine whether the hypothesis test would be directional or non-directional and whether it would be a test of difference, equivalence, superiority, or non-inferiority. Do students who get at least 8 hours of sleep the night before an exam get different exam grades than those who get less than 8 hours of sleep

Answer #1

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...

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...

. The average college student gets 8 hours of sleep a night.
Health services wants to know if UNH students get more or less
sleep than the average student. They sample 46 students and find
that they sleep on average 7 hours a night with a standard
deviation of 1.86.
a.
State the null and alternative hypothesis.
b.
Conduct the most appropriate test.
c.
What do you conclude?
d.
If applicable, what is the 95% confidence interval?

1. State the null hypothesis and the alternative hypothesis for
each of the following examples.
After low scores on the first exam, a chemistry teacher wants to
boost her students’ long-term retention of the material so she
introduces them to a new study technique to see if it improves
their memory for the material. She wants to see whether her class’
Exam 2 scores are significantly higher than their Exam 1
scores.
Is this a one- or two-tailed test? H0:...

State the null and research hypothesis for the following: In
examining the relationship between sleep deprivation and
impatience, researchers hypothesized that there would be a strong
correlation.

Report 1) the appropriate statistical test or estimation
procedure to use, 2) the null and alternate hypotheses, 3) the test
statistic, 4) the P value, 5) whether you accept or reject the
null, then 6) a sentence or two about what the results mean.
1. A student conducted a study on food preference in 100 adult
females. The study asked each adult if they preferred food that is
salty or sweet. 65 answered salty and 35 answered sweet. Is there...

In this discussion, we are going to consider 5 studies on the
amount of sleep college students get in a typical night. It is long
been recommended that adults should get 8 hours of sleep each
night. Five scientists each take a random sample of n
students to help them learn about the true average number of hours
sleep college students get in a typical night (so each scientist
has the same number of students, but different individuals, in
their...

Problem 4: Write the claim as an inequality, state the null and
alternative hypothesis. Determine whether the hypothesis test for
this claim is left-tailed, right-tailed, or two-tailed.
- A food manufacturers claim that at least 96.5% of their
products is organic. [5 points]
- A government agency reports that the male to female ratio in 2019
was 108 to 100. A test is conducted to see if, in fact, the
proportion is greater. [5 points]
- In a recent survey,...

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...

In the following studies, state whether the one-sample
t test is an appropriate test statistic to analyze data.
If not, then explain why it is not appropriate.
(a) a study testing whether night-shift workers sleep the
recommended 8 hours per day
a one-sample t-test is appropriatea OR
one-sample t-test is not appropriate because a specific
standard or criteria is not identified
(b) a study measuring differences in attitudes about morality
among people who self-identify as liberal or conservative
a one-sample...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 2 minutes ago

asked 8 minutes ago

asked 12 minutes ago

asked 38 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago