Question
In: Statistics and Probability
Person 1 Person 2 Person 3 Person 4 Person 5 Person 6 Person 7 Person 8...
| Person 1 | Person 2 | Person 3 | Person 4 | Person 5 | Person 6 | Person 7 | Person 8 | Person 9 | |
|
Height (inches) |
60 inches | 67 inches | 70 inches | 65 inches | 72 inches | 64 inches | 70 inches | 71 inches | 59 inches |
|
Weight (Ibs) |
120 lbs | 150 lbs | 180 lbs | 125 lbs | 200 lbs | 130 lbs | 170 lbs | 180 lbs | 100 lbs |
1. Construct a confidence interval to estimate the mean height and the mean weight.
a. find the sample mean and the sample standard deviation of the height
b. find the sample mean and the sample deviation of the weight
c. construct a confidence interval to estimate the mean height.
d. construct a confidence interval to estimate the mean weight.
2. Test a claim that the mean height of people you know is not equal to 64 inches using the p-value method or the traditional method.
a. state the Ho and the h1.
b. Find the p value or critical value(s)
c. Draw a conclusion
3. Find the correlation coefficient between and the height and the weight. Construct the equation of the regression line and use it to predict the weight of a person who is 68 inches tall.
(All work must explained as it is being written, [ be clear on formulas if you are typing them ])
Solutions
orchestra answered 1 year agoRelated Solutions
x 2 8 5 9 4 3 9 6 7 8 y 3 6 5 7...
x 2 8 5 9 4 3 9 6 7 8
y 3 6 5 7 9 7 4 6 9 9
-5.48x + 0.17
5.48x + 0.17
-0.17x + 5.48
0.17x + 5.48
ID X Y 1 2 3 2 3 6 3 4 6 4 5 7 5...
ID
X
Y
1
2
3
2
3
6
3
4
6
4
5
7
5
8
7
6
5
7
7
6
7
8
8
8
9
7
8
10
12
11
Test the significance of the correlation coefficient.
Then use math test scores (X) to predict physics test scores
(Y). Do the following:
Create a scatterplot of X and Y.
Write the regression equation and interpret the regression
coefficients (i.e., intercept and slope).
Predict the physics score for each....
[4 5 5 2 4 4 6 3 3 7 5 3 6 3 4 4...
[4 5 5 2 4 4 6 3 3 7 5 3 6 3 4 4 6 5 4 5 3 7 5 5 4 2 6 5 6
6]
This is my dataset
Find mean, median, mode, variance, standard deviation,
coefficient of variation, range, 70th percentile,
3rdquartile of the data and skewness and define what
each of these statistics measure. For example, mean is a measure of
the central tendency, what about the rest?
Use Chebyshev’s rule to find...
[4 5 5 2 4 4 6 3 3 7 5 3 6 3 4 4...
[4 5 5 2 4 4 6 3 3 7 5 3 6 3 4 4 6 5 4 5 3 7 5 5 4 2 6 5 6
6]
This is my dataset
Split the dataset in two equal parts. You have 30 datavalues.
If you split the data in two equal parts each part will contain 15
data values. Call the first part Y and second part
X.Draw scatter plot of the 2 datasets, X being on the horizontal...
tens Units 1 5 2 3 4 8 5 2 5 6 9 6 1 3...
tens
Units
1
5
2
3
4
8
5
2 5 6 9
6
1 3 5 4 7 9
7
0 0 4 5 6 9 9
8
1 3 5 6 8 9
9
0 1 2 3 5 9
The table represent a random sample of 31 test scores taken from
a large lecture class. Find the following [round to 2 decimal
points X. XX]
a) [2 pts] Find the 5 number summary [L, Q1, Q2, Q3,...
3 6 4 8 1 10 2 9 11 12 15 22 3 6 7 5...
3
6
4
8
1
10
2
9
11
12
15
22
3
6
7
5
8
1
12
14
Each column represents a different treatment given to sick rats.
Each cell is a different rat. Use statistical analysis and use post
hoc testing using contrasts to find the best
treatment.
Treatment 1: vitamins
Treatment 2: prescription pills
Treatment 3: brain surgery
Treatment 4: shock therapy
Treatment 5: dietary changes
3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5 Using the previous question...
3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5 Using the previous question
's scores, If three points were added to every score in this
distribution, what would be the new mean? If three points were
added to every score in this distribution, what would be the new
standard deviation. Remember, you have already calculated
population standard deviation in a previous problem. This problem
requires two answers.
PROBLEM 5. A box contains 10 tickets labeled 1, 2, 3, 4, 5, 6, 7, 8,...
PROBLEM 5. A box contains 10 tickets labeled 1, 2, 3, 4, 5, 6,
7, 8, 9, 10. Draw four tickets and find the probability that the
largest number drawn is 8 if:
(a) the draws are made with replacement.
(b) the draws are made without replacement.
PROBLEM 6. Suppose a bakery mixes up a batch of cookie dough for
1,000 cookies. If there are raisins in the dough, it's reasonable
to assume raisins will independently have a .001 chance...
A = （1 −7 5 0 0 10 8 2 2 4 10 3 −4 8...
A =
（1 −7 5 0
0 10 8 2
2 4 10 3
−4 8 −9 6）
(1) Count the number of rows that contain negative
components.
(2) Obtain the inverse of A and count the number of columns that
contain even number of positive components.
(3) Assign column names (a,b,c,d) to the columns of A.
(4) Transform the matrix A into a vector object a by stacking
rows.
(5) Replace the diagonal components of A with (0,0,2,3). Hint:...
Using the same data… 2 3 4 4 4 6 6 6 7 8 8 9...
Using the same data… 2 3 4 4 4 6 6 6 7 8 8 9 10 10 11 12 16 16
28 46 (d) [5 pts] Determine the 5# summary. (e) Determine the lower
and upper fence to determine if there are any outliers. (f) Draw
and carefully label a modified boxplot for this data. (g) What is
the shape of the distribution (symmetric, skewed left, or skewed
right). Explain.
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