Question
You wish to see if there is a difference in weight between the limes and lemons...
You
wish to see if there is a difference in weight between the limes
and lemons that are sold at your grocery store. You know that the
weights of each are normally distributed. The population standard
deviations are 50 grams for lemons and 40 grams for limes. You
sample 45 lemons, and find a sample average of 135 grams. You
sample 55 limes, and find a sample average of 140 grams. Perform a
hypothesis test at the 0.05 level to see if there is a difference
in weight.
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
You want to see if there is a statistical difference between the two groups. Run descriptives...
You want to see if there is a statistical difference between the
two groups. Run descriptives and a two-tailed, two sample assuming
equal variance t-test.
Here's your data:
Weight of Apples in Grams
Apple ID
Farm A
Farm B
1
131
151
2
147
159
3
134
162
4
134
158
5
136
159
6
137
160
7
140
150
8
134
160
9
136
160
10
133
160
11
134
160
12
132
158
13
139
162
14
136...
Suppose you believe the average weight of a certain collection of rainbow trout is 400 grams....
Suppose you believe the average weight of a certain collection
of rainbow trout is 400 grams. A sample of weights of 40 rainbow
trout revealed that the sample mean is 402.7 grams and the sample
standard deviation is 8.8 grams. What is the p value of getting
such a sample? Would you reject the null hypothesis at 95%
significance level?
Concept only no math needed. You wish to estimate the average weight of a mouse. You...
Concept only no math needed.
You wish to estimate the average weight of a mouse. You obtain
10 mice, sampled uniformly at random and with replacement from the
mouse population. Their weights are 21; 23; 27; 19; 17; 18; 20; 15;
17; 22 grams respectively. Notice there are too few mice to use a
normal model.
What distribution would you use instead of the normal
distribution in order to find confidence intervals? State the name
of the distribution and the...
A researcher wishes to see if there is a difference in the cholesterol levels of two...
A researcher wishes to see if there is a difference in the
cholesterol levels of two groups of men. A random sample of 30 men
between the ages of 25 and 40 is selected and tested. The average
level is 223. A second sample of 25 men between the ages of 41 and
56 is selected and tested. The average of this group is 229. The
population standard deviation for both groups is 6. At a 0.0l
significance level, is...
You are investigating the difference in weight gain between female and male iguanas when they are...
You are investigating the difference in weight gain between
female and male iguanas when they are both given a high protein
diet for a week. Each iguana in the study is to be matched with
another iguana of opposite sex, of similar age and size. From
similar studies done in the past, you know that female iguanas, on
average, put on 2.5 more pounds of weight than male iguanas do
post-diet. These studies also indicate that the standard deviation
of...
Suppose that you had consumer group wanted to test to see if weight of participants in...
Suppose that you had consumer group wanted to test to see if
weight of participants in a weight loss program changed (up or
down). They computed a 95% confidence interval of the result
(-4.977, 2.177).
Suppose that we had a significance test with the following
hypothesis:
Ho: population mean weight loss = 0
Ha: population mean weight loss does not equal 0
What do we know about the p-value for the test?
It would be greater than 0.05.
It would...
Suppose that you had consumer group wanted to test to see if weight of participants in...
Suppose that you had consumer group wanted to test to see if
weight of participants in a weight loss program changed (up or
down). They computed a 95% confidence interval of the result
(-4.977, -2.177). Suppose that we had a significance test with the
following hypothesis:
Ho: population mean weight loss = 0
Ha: population mean weight loss does not equal 0
What do we know about the p-value for the test?
Group of answer choices
Can't be determined.
It...
You wish to test the claim that post-test scores are an improvement, at a significance level...
You wish to test the claim that post-test scores are an
improvement, at a significance level of 0.05
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
the following sample of data:
pre-test
post-test
51.4
56.5
36.8
63.5
51
55.6
45
69.9
38
22.3
50
64.9
37.2
48.4
29.3
31.3
56.9
63
29.3
40.1
39.6
49.9
50.3
28.7
62.4
65.9
39.2
37.1
70.5
66.4
15.8
18.9
30.7
71.6
76.2...
An investigator wants to assess whether the mean m = the average weight of passengers flying...
An investigator wants to assess whether the mean m =
the average weight of passengers flying on small planes
exceeds the FAA guideline of average total weight of
190 pounds (passenger weight including shoes,
clothes, and carry-on). Suppose that a random sample of
61 passengers showed an average total weight of
210pounds with a sample standard deviation of
69.5 pounds. Assume that passenger total weights
are normally distributed. Suppose the investigator decides to
conduct a hypothesis test. Find is the...
A researcher wants to know if the vitamins will increase the average weight of a cow....
A researcher wants to know if the vitamins will increase the
average weight of a cow. She randomly selects 2 cows from each of
18 different breeds of cows. For each breed one cow gets the
vitamin, and one cow does not. Assume cow weights are normally
distributed. Given the data below, calculate a 90% confidence
interval for the difference in the averages between cows on the
vitamins and cows not on the vitamins.
For the cows which did not...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 38 minutes ago
asked 56 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago