Question

A study of reading comprehension in children compared three
methods of instruction. The three methods of instruction are called
Basal, DRTA, and Strategies. As is common in such studies, two
pretest variables were measured before any instruction was given.
One purpose of the pretest was to see if the three groups of
children were similar in their comprehension skills prior to the
start of the study. The READING data set described in the Data
Appendix gives two pretest measures that were used in this study.
Use one-way ANOVA to analyze the Pretest 1 Data. **(Data
found below)**

1. What null hypothesis are you testing?

(a)At least one population mean is different

(b)The sample means for all three methods of instruction are equal

(c)At least one sample mean is different

(d)The population means for all three methods of instruction are equal

2. What are the mean score for each of the three methods of
instruction? Round your answers to 2 decimal places.

Basal=

DRTA=

Strategies=

3. What are the values of F and P for the ANOVA? Round your answers
to 2 decimal places.

F=

p-value=

4. What is your conclusion?

(a)Reject the null hypothesis.

(b)We can conclude that at least one mean is different.

(c)Fail to reject the null hypothesis.

(d)There is not sufficient evidence to support a difference in means.

**Data:**

subject group pre1 pre2 post1 post2 post3 1 B 4 3 5 4 41 2 B 6 5 9 5 41 3 B 9 4 5 3 43 4 B 12 6 8 5 46 5 B 16 5 10 9 46 6 B 15 13 9 8 45 7 B 14 8 12 5 45 8 B 12 7 5 5 32 9 B 12 3 8 7 33 10 B 8 8 7 7 39 11 B 13 7 12 4 42 12 B 9 2 4 4 45 13 B 12 5 4 6 39 14 B 12 2 8 8 44 15 B 12 2 6 4 36 16 B 10 10 9 10 49 17 B 8 5 3 3 40 18 B 12 5 5 5 35 19 B 11 3 4 5 36 20 B 8 4 2 3 40 21 B 7 3 5 4 54 22 B 9 6 7 8 32 23 D 7 2 7 6 31 24 D 7 6 5 6 40 25 D 12 4 13 3 48 26 D 10 1 5 7 30 27 D 16 8 14 7 42 28 D 15 7 14 6 48 29 D 9 6 10 9 49 30 D 8 7 13 5 53 31 D 13 7 12 7 48 32 D 12 8 11 6 43 33 D 7 6 8 5 55 34 D 6 2 7 0 55 35 D 8 4 10 6 57 36 D 9 6 8 6 53 37 D 9 4 8 7 37 38 D 8 4 10 11 50 39 D 9 5 12 6 54 40 D 13 6 10 6 41 41 D 10 2 11 6 49 42 D 8 6 7 8 47 43 D 8 5 8 8 49 44 D 10 6 12 6 49 45 S 11 7 11 12 53 46 S 7 6 4 8 47 47 S 4 6 4 10 41 48 S 7 2 4 4 49 49 S 7 6 3 9 43 50 S 6 5 8 5 45 51 S 11 5 12 8 50 52 S 14 6 14 12 48 53 S 13 6 12 11 49 54 S 9 5 7 11 42 55 S 12 3 5 10 38 56 S 13 9 9 9 42 57 S 4 6 1 10 34 58 S 13 8 13 1 48 59 S 6 4 7 9 51 60 S 12 3 5 13 33 61 S 6 6 7 9 44 62 S 11 4 11 7 48 63 S 14 4 15 7 49 64 S 8 2 9 5 33 65 S 5 3 6 8 45 66 S 8 3 4 6 42

Answer #1

**Solution:** 1. What null hypothesis are you
testing?

**Answer:** **(d)The population means for all
three methods of instruction are equal**

2. What are the mean score for each of the three methods of instruction?

**Answer:**

3. What are the values of F and P for the ANOVA?

**Answer:** We can use excel data analysis tool to
find the F and P value. The excel output is given below:

Therefore we have:

4. What is your conclusion?

**Answer: c) Fail to reject the null
hypothesis.**

A study of reading comprehension in children compared three
methods of instruction. The three methods of instruction are called
Basal, DRTA, and Strategies. Basal is the traditional method of
teaching, while DRTA and Strategies are two innovative methods
based on similar theoretical considerations. The READING data set
includes three response variables that the new methods were
designed to improve. Analyze these variables using ANOVA methods.
Be sure to include multiple comparisons or contrasts as needed.
Write a report summarizing your...

A study of reading comprehension in children compared three
methods of instruction. The three methods of instruction are called
Basal, DRTA, and Strategies. Basal is the traditional method of
teaching, while DRTA and Strategies are two innovative methods
based on similar theoretical considerations. The READING data set
includes three response variables that the new methods were
designed to improve. Analyze these variables using ANOVA methods.
Be sure to include multiple comparisons or contrasts as needed.
Write a report summarizing your...

Please compute the value, upper control limit, and lower
control limit for the x-bar chart, r-bar chart, p
chart, and np chart.
Sample #
Observations
Defects
1
44
49
44
44
40
0
2
42
46
51
51
42
2
3
45
45
49
49
46
2
4
40
39
42
42
47
7
5
44
51
53
53
44
2
6
41
44
43
43
46
8
7
40
44
46
46
48
3
8
54
49
48
48...

This dataset contains consumer responses indicating the number
of times they had to send their product for repair and their
satisfaction with the repair process. Create a graph which can be
used to visually demonstrate the relationship between the two
columns of data. Ensure that the chart is professional with
appropriate titles, axis labels, etc. Note any observations you see
in your visualization (type these as sentences directly into an
Excel cell(s)).
Sample
Satisfaction Rating
Repair Requests
1
63%
13...

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...

Bag
Blue
Orange
Green
Yellow
Red
Brown
Total Number of Candies
1
7
23
9
11
4
6
60
2
16
16
4
7
9
4
56
3
14
14
3
10
5
11
57
4
13
14
7
8
8
6
56
5
18
12
7
10
5
7
59
6
12
9
11
9
8
8
57
7
15
16
6
6
6
8
57
8
15
17
8
4
6
7
57
9
12
14
10
5...

Use Stats Disk if needed!!
Question=
Based on this data, create an interval for which we would
consider it "usual" for a randomly selected participant to fall
within.
1-6
2-1
3-1
4-4
5-6
6-8
7-2
8-2
9-4
10-5
11-7
12-10
13-6
14-3
15-2
16-1
17-Something
.............
18-1
19-2
20-3
21-5
22-7
23-8
24-2
25-3
26-2
27-2
28-4
29-3
30-4
31-6
32-1
33-1
34-6
35-4
36-4
37-3
38-1
39-1
40-5
41-8
42-1
43-7
44-9
45-2
46-9
47-7
48-8
49-4
..........
50-2

Indices DUR DUR (OLD)
1 6 11
2 13 14
3 11 14
4 7 10
5 9 9
6 7 10
7 8 11
8 5 8
9 7 6
10 7 10
11 7 13
12 3 5
13 10 13
14 3 15
15 4 12
16 9 7
17 9 8
18 10 13
19 6 10
20 8 14
21 10 14
22 8 18
23 2 10
24 4 11
25 7 16
26 ...

A study was conducted to investigate the influence of a driver's
age, number of driving years and attention span (the higher, the
more detailed) on the number of speeding tickets within the last
five years. Given a driver at age 30, who has been driving for 10
years with an attention span score of 5, what is the number of
tickets that can be expected?
TICKETS
AGE
YEARS
SPAN
8
32
16
7
6
35
19
10
5
24
10...

USE STATSDISK if needed
Question?
"Based on this data below, create an interval for which we would
consider it "usual" for a randomly selected participant to fall
within." ?
Data Given:
1-6
2-1
3-1
4-4
5-6
6-8
7-2
8-2
9-4
10-5
11-7
12-10
13-6
14-3
15-2
16-1
17-Something
................
18-1
19-2
20-3
21-5
22-7
23-8
24-2
25-3
26-2
27-2
28-4
29-3
30-4
31-6
32-1
33-1
34-6
35-4
36-4
37-3
38-1
39-1
40-5
41-8
42-1
43-7
44-9
45-2
46-9
47-7
48-8...

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