The data below is your data set for your mini lab. For this
assignment, you are...
The data below is your data set for your mini lab. For this
assignment, you are the researcher. You gave the facial recognition
lab to 40 students, 20 males and 20 females. The data set below
contains the number of correct hits for each subject. Complete the
calculations below based on the data provided.
Males 5 5 8 5 6 7 4 5 3 4 8 5 10 6 5 5 8 7 5 6
Females 9 8 7 7...
Determine the decision criterion for rejecting the null
hypothesis in the given hypothesis test; i.e., describe...
Determine the decision criterion for rejecting the null
hypothesis in the given hypothesis test; i.e., describe the values
of the test statistic that would result in rejection of the null
hypothesis. A farmer has decided to use a new additive to grow his
crops. He divided his farm into 10 plots and kept records of the
corn yield (in bushels) before and after using the additive. The
results are shown below.
Plot Before After
1 9 10
2 9 9...
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to...
HW 6: z-test, t-test for independent samples, t-test for related
samples, 1-way ANOVA
Researchers wanted to explore different treatment methods to
effect memory skills in high school freshmen. Subjects were given a
memory test (under multiple conditions) these were the results:
Group 1
10, 8, 9, 11,
8, 9, 7, 6,
9, 8
Group 2
12, 10,
11, 9, 13, 8, 9, 12, 11, 11
Group 3
10, 9, 10, 9, 11,
8, 7, 9, 10, 11...
Using the methods in Section 11.1, test the hypothesis (α =
0.05) that the population proportions...
Using the methods in Section 11.1, test the hypothesis (α =
0.05) that the population proportions of red and brown are equal
(pred = pbrown). You are testing if their proportions are equal to
one another. NOTE: These are NOT independent samples, but we will
use this approach anyway to practice the method. This also means
that n1 and n2 will both be the total number of candies in all the
bags. The “x” values for red and brown are...
In a research project, researchers collected demographic and
health data from a sample of elderly residents...
In a research project, researchers collected demographic and
health data from a sample of elderly residents in the community. To
examine any possible gender differences in their sample, they want
to see if the females and the males differ significantly on the
education level (number of years of formal schooling). The
researchers are not predicting any direction in the possible gender
differences so the hypotheses should be non-directional. They would
like to run a two-tailed test with α = .10....