What is the purpose of heat fixing a slide?
List the 4 major steps of the gram stain and explain what is
happening to both Gram positive and Gram negative cells in each
step.
Why don’t we heat fix in the capsule stain?
What are the major things that are done in the acid fast stain
procedure that allow acid fast cells to be stained?
Hypothetically, let's say you perform an endospore stain and
observe that the endospores formed in...
Compare and contrast Simple Random Samples with Stratified
Random Samples Discuss the major difference between probability and
nonprobability samples, and discuss the impact this difference has
on one’s ability to generalize to the larger population being
studied. Be Specific. Criminal Justice
assume that all samples are simple random samples and that
all populations are normally distribute.
A female Tuna fish have a mean of 316 lbs and a standard
deviation of 51lbs
a. find probability (4 dp) that 1 randomly-selected adult female
tuna weighs between 260lbs and 300 lbs. draw a bell-shaped curve
and shade the area corresponding to the probability.
b. find the probability (4dp) that a sample of 7 female tuna has
a mean weight between 260lbs and 300...
You took a SRS ( Simple Random Sample) of size 40.
Suppose that another student presented the exact same data values
as you. Calculate the probability of this happening. Should I as
the instructor be concerned?
please assume all samples are simple random samples, and all
populations are normally distributed. for any calculator quantity
that is to be used in a further calculation involving
multiplication division powers or Roots at least four significant
figures should be used unless exact
at McDonalds a sample of 81 drive-thru customers revealed that
there drive through wait time had a mean of 4.87 minutes with
standard deviation of .52 minutes
a. construct a 95% confidence interval estimate (2 DP) of...
Assume that the two samples are independent simple random
samples selected from normally distributed populations. Do not
assume that the population standard deviations are equal. Refer to
the accompanying data set. Use a 0.01 significance level to test
the claim that the sample of home voltages and the sample of
generator voltages are from populations with the same mean. If
there is a statistically significant difference, does that
difference have practical significance?
Day Home (volts) Generator
(volts)
1 123.7 ...
Assume that the two samples are independent simple random
samples selected from normally distributed populations. Do not
assume that the population standard deviations are equal.
Refer to the accompanying data set. Use a 0.05 significance
level to test the claim that the sample of home voltages and the
sample of generator voltages are from populations with the same
mean. If there is a statistically significant difference, does
that difference have practical significance?
Day
Home( volts)
Generator( volts)
Day
Home (volts)...
Assume that two samples are independent simple random samples
selected from normally distributed populations. Do not assume that
the population standard deviations are equal.
A paint manufacturer wished to compare the drying times of two
different types of paint. Independent simple random samples of 11
cans of type A and 14 cans of type B were selected and applied to
similar surfaces. The drying times, in hours, were recorded.
The summary statistics are below.
Type A:
x1 = 75.7
hours,...
Assume that the two samples are independent simple random
samples selected from normally distributed populations. Do not
assume that the population standard deviations are equal.
Refer to the accompanying data set. Use a 0.01 significance
level to test the claim that women and men have the same mean
diastolic blood pressure.
(a) calculate the test statistic
t=
(b) find p-vlaue
p-value=
(c) Make a conclusion about the null hypothesis and a final
conclusion that addresses the original claim.
(Reject/no reject)...
Assume that the two samples are independent simple random
samples selected from normally distributed populations. Do not
assume that the population standard deviations are equal. Refer to
the accompanying data set. Use a 0.01 significance level to test
the claim that women and men have the same mean diastolic blood
pressure.
Women Men
71.0 70.0
94.0 64.0
79.0 67.0
65.0 60.0
73.0 63.0
79.0 71.0
58.0 58.0
51.0 40.0
71.0 67.0
87.0 66.0
67.0 82.0
60.0 74.0
73.0 55.0
61.0 ...