6) In the EI test example from the previous two problems, assume
the mean of the...
6) In the EI test example from the previous two problems, assume
the mean of the test is 100 and the standard deviation is 11. Using
a z-table, what scores would be the top and bottom score to find
the
a) middle 50% of students
b) middle 80% of students
c) middle 95% of students?
previous questions:
4) Suppose that student scores on an emotional intelligence (EI)
test are normally distributed. Using a z-table (normal curve
table), what percentage of...
Contingency table. For the following table that has frequencies
from counties and their health outcomes, find...
Contingency table. For the following table that has frequencies
from counties and their health outcomes, find the probability of a
bad health outcome if you were to live in a rural county.
bad
good
rural
501
68
urban
103
391
Binomial probability. About 2% of the time you would expect to
succumb to an infection that keeps you from going to work in any
given week. What is the probability of being out due to this event
exactly once in...
Let the following sample of 8 observations be drawn from a
normal population with unknown mean...
Let the following sample of 8 observations be drawn from a
normal population with unknown mean and standard deviation: 16, 26,
20, 14, 23, 10, 12, 29. [You may find it useful to
reference the t table.]
a. Calculate the sample mean and the sample
standard deviation. (Round intermediate calculations to at
least 4 decimal places. Round "Sample mean" to 3 decimal places and
"Sample standard deviation" to 2 decimal places.)
b. Construct the 95% confidence interval for
the population...
2.) Assume that you have a sample of n1 = 8, with the sample
mean X...
2.) Assume that you have a sample of n1 = 8, with the sample
mean X overbar 1= 42, and a sample standard deviation of S1 = 4,
and you have an independent sample of n2=15 from another population
with a sample mean of X overbear 2 = 34 and a sample standard
deviation of S2 = 5.
What assumptions about the two populations are necessary in
order to perform the pooled-variance t test for the hypothesis H0:
μ1=μ2 against...
Consider the following IQ data obtained from a sample of 25
incarcerated youth. Convert the 25...
Consider the following IQ data obtained from a sample of 25
incarcerated youth. Convert the 25 raw adjustment scores to
standardized scores. Show work for at least one of the 25 scores.
(Hint: You need to calculate the mean and SD first!) (4pts
for entire column) *For this question, only TWO decimal
places are required.
ID: 1, 2, 3, 4, 5, 6 , 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
18, 19, 20, 21, 22, 23,...
answer part D only. You find 8 bands who use videos to enhance
their club-level concerts....
answer part D only. You find 8 bands who use videos to enhance
their club-level concerts. They report that the average set up cost
was videos $7,700, with a standard error of $2,100. Use the
T-distribution calculator to answer the following questions: a)
Based on this sample, what percent of bands had video enhancement
set up costs of less than $6,000? Round to the 0.1% b) You define a
“big video spender” as a band which is in the 90th...
Lab 9 – Molecular Biology
In this lab, you will prepare an agarose gel and use...
Lab 9 – Molecular Biology
In this lab, you will prepare an agarose gel and use gel
electrophoresis to compare the size of 2 dye molecules Methyl
orange and Ponceau G. You will also analyze an “unknown” sample
that contains a mixture of two dyes. Dye molecules with lower
molecular weight or greater electrical charge will migrate faster
through the gel, than dye molecules with greater molecular weights
or lesser electrical charge.
Materials:
Mini gel electrophoresis chamber
6 Tooth comb...