Question

The following two samples were collected as matched pairs: Pair 1 2 3 4 5 6 7 8 Sample 1 8 4 6 9 9 7 9 8 Sample 2 5 7 6 5 6 9 7 6 a. State the null and alternative hypotheses to estimate the difference in means between the populations from which Samples 1 and 2 were drawn. b. Calculate the appropriate test statistic and interpret the results of the hypothesis test using α = 0.1. c. Construct a 90% confidence interval to test this hypotheses d. What conclusions can be made based on these results?

Answer #1

The accompanying table contains two samples that were collected
as matched pairs. Complete parts a and b below.
Pair
Sample 1
Sample 2
1
10
4
2
6
7
3
4
6
4
8
3
5
11
5
6
7
9
7
8
5
8
7
5
A.
Construct a 90?% confidence interval to estimate difference in
means between the populations from which Sample 1 and 2 were
drawn.
UCL d-overbar
= ??
LCL d-overbar
= ??
B . What...

The accompanying table shows two samples that were collected as
matched pairs. Complete parts (a) through (d) below.
Pair:
1 7 5
2 5 2
3 8 7
4 4 5
5 5 1
6 9 9
a. State the null and alternative hypotheses to test if the
populatio represented by Sample 1 has a higher mean than the
population represented by Sample 2. Let ud be the population mean
of matched-pair differences for Sample 1 minus Sample 2. Choose...

The following two samples were collected as matched pairs.
Complete parts? (a) through? (d) below. Pair 1 2 3 4 5 6 7 Sample 1
4 5 8 5 7 6 7 Sample 2 5 3 4 3 4 5 4 a. State the null and
alternative hypotheses to test if a difference in means exists
between the populations represented by Samples 1 and 2. Let mud be
the population mean of? matched-pair differences for Sample 1 minus
Sample 2....

Pair 1 2 3 4 5 6 7 8 9 10
Medication 7 8 9 5 6 7 7 8 8 7
Placebo 5 5 7 6 8 7 5 9 3 7
(Note: If you’re going to subtract, choose the order medication
- placebo.)
A sample of patients with similar weight and age characteristics
were put in pairs. One patient in the pair was given medication
while the other patient was given a placebo. After a month patients
were...

Samples were drawn from three populations. The sample sizes were
n1 = 6, n2 = 9, and n3 = 8. The sample means were =1.52, < x 2
>=1.62 , and < x 3 >=1.65. The sample standard deviations
were s1 = 0.50, s2 = 0.36, and s3 = 0.48. The grand mean is =
1.604348 . Compute the value of the test statistic F.

The table below presents three samples of data. Please conduct a
test for the equality of the three population means with 90%
confidence.
Sample
1
Sample
2
Sample
3
7
11
6
5
8
5
7
11
4
6
7
5
6
13
14
6
13
5
6
12
5
6
11
6
8
8
8
9
7
6
7
6
14
9
7
4
8
8
8
8
9
13
9
6
10
8
11
14
8
9
14...

You are given the following scores from two randomly drawn
independent samples: X: 6, 7, 8, 8, 11 Y: 3, 4, 4, 7, 7 (a) State
formally the hypotheses necessary to conduct a nondirectional test
of no difference between the two population means. (b) Complete the
test at the .05 and .01 levels of significance, and state your
conclusions

The following samples of observations were randomly
selected.
x:
5
3
6
3
4
4
6
8
y:
13
15
7
12
13
11
9
5
Determine the regression equation.
Determine the value of y when x is 7.

Describe a confidence interval for the difference in means
between two population by stating
1. a pair of populations composed of the same type of individuals
and a quantitative variable on those populations,
2. sizes and degrees of freedom of samples from those
populations,
3. the means of those samples, and
4. the standard deviations of those samples. Then state
5. a confidence level and find
6. find the interval. Finally, perform a test of significance
concerning the difference in...

Chapter 6, Section 5, Exercise 236 Use a t-distribution and the
given matched pair sample results to complete the test of the given
hypotheses. Assume the results come from random samples, and if the
sample sizes are small, assume the underlying distribution of the
differences is relatively normal. Assume that differences are
computed using d = x1-x2. Test H0 : ud=0 vs H0 : ud /= 0 using the
paired difference sample results x bar = 14.46, S= 13.0, n=25...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 50 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago

asked 4 hours ago

asked 4 hours ago