with another study, where you also plan on evaluating a mean
using the t statistic, you...
with another study, where you also plan on evaluating a mean
using the t statistic, you have a sample of n = 56 that has an SS
of 275. What is the variance for the sample?
A sample has a mean of M = 60 and a t statistic of t = 4.5. For
a one-tailed hypothesis test with α = .01, what is the
correct statistical decision for this sample? Why?
a.
The researcher can reject the null hypothesis with α =
.05 but not with α = .01.
b.
The researcher can reject the null hypothesis with either
α = .05 or α = .01.
c.
The researcher must fail to reject the null...
Using a t-distribution table or software or a calculator,
report the t-statistic which is multiplied by the standard error
to form the margin of error for the following cases.
a. 90% confidence interval for a mean with 16 observations.
b. 90% confidence interval for a mean with 26 observations.
c. 98% confidence interval for a mean with 26 observations.
a. t = _____ (round to three decimal places)
b. t = _____ (round to three decimal places)
c. t =...
For
the data below, test the significance of the t test statistic using
a=0.01 and the claim p=0.
x: 3 5 12 9 7 6 8 10 11 4
y: 21 16 4 9 13 14 11 6 5 18
The value obtained for the test statistic, z, in a one-mean
z-test is given. Also given is whether the test is two tailed, left
tailed, or right tailed. Determine the P-value.
A left-tailed test:
z = -0.58
Group of answer choices
0.7190
0.4380
0.5620
0.2810
Create a fictitious study where you have to decide
whether one group is better than another. You are working at the 5%
level of significance. The two groups are independent from one
another. include hypothesis, calculations, decisions and
conclusion
Group 1
Group 2
Subject
Result
Subject
Result
S1
46.0
S13
44.0
S2
51.6
S14
48.9
S3
59.4
S15
41.9
S4
55.8
S16
53.9
S5
57.8
S17
44.9
S6
47.3
S18
44.7
S7
53.5
S19
39.5
S8
56.6
S20
47.3
S9...
Suppose that you also had information about another blocking
factor “machine”, where four machines had been used to measure the
sugar content such that each machine had been used once with each
storage time and once with each storage condition i.e. the design
was a Latin square design.
(i) Describe the advantages/disadvantages of the Latin square
design. If there are any disadvantages, explain how they may be
overcome
You plan to work for another 30 years at which point you plan to
retire, after which you expect to live for another 30 years. During
your retirement, you plan to make annual withdrawals at the
beginning of each year where each withdrawal should have the same
purchasing power as $100,000 today. You would also like to provide
a bequest to your children (paid when you die) that has the same
purchasing power as $1 million today. To provide for...