Question

A random sample of small-business managers was given a
leadership style questionnaire. The results were scaled so that
each manager received a score for initiative. Suppose the following
data are a random sample of these scores.

36 | 42 | 42 | 39 | 38 | 31 | 42 |

36 | 35 | 45 | 30 | 33 | 35 | 44 |

36 | 36 | 39 | 33 | 39 | 42 | 41 |

33 | 35 | 36 | 41 | 33 | 36 | 38 |

42 | 42 | 44 | 35 | 36 | 33 | 38 |

32 | 30 | 36 | 42 |

Assuming *σ* is 3.891, use these data to construct a 90%
confidence interval to estimate the average score on initiative for
all small-business managers.

Answer #1

A random sample of small-business managers was given a
leadership style questionnaire. The results were scaled so that
each manager received a score for initiative. Suppose the following
data are a random sample of these scores. 38 42 39 39 38 31 39 38
35 45 30 33 35 44 36 38 39 33 39 39 41 33 35 36 41 33 38 38 39 42
44 35 36 33 38 32 30 38 42 Assuming σ is 3.891, use...

A random sample of small-business managers was given a
leadership style questionnaire. The results were scaled so that
each manager received a score for initiative. Suppose the following
data are a random sample of these scores.
43
42
41
39
38
31
41
43
35
45
30
33
35
44
36
43
39
33
39
41
41
33
35
36
41
33
43
38
41
42
44
35
36
33
38
32
30
43
42
Assuming σ is 3.891, use...

weeks 39 42 37 41 39 38 37 35 38 37 45 42 40 38 38 40 40 24 40
37 39 40 39 40 38 38 39 40 39 38 42 36 29 29 35 35 31 42 38 41 43
41 40 38 37 38 41 40 40 38 40 40 42 41 37 39 40 38 39 41 40 39 39
37 41 40 38 44 41 37 36 33 30 36 33 39 39 40 40...

Given the data below:
14 18 30 30 31 31 32 32 33 33 34 36 38 39 40 41 41 42 42 43 43
43 44 44 45 45 46 46 47 47 47 65 70
A. Make frequency diagram with 6 classes
B. Draw Histogram
C. Give 5 number summary
D. Draw the box and whicker diagram showing the fences, the
whiskers, and the outliers

Four basketball teams took a random sample of players
regarding how high each player can jump (in inches). The results
are in Table 13.15:
Team 1
Team 2
Team 3
Team 4
Team 5
36
32
48
38
41
42
35
50
44
39
51
38
39
46
40
At the 5% significance level, is there a difference in the
mean jump heights among the teams?
a. Yes there is
b. No there isn't

Oishi and Shigehiro (2010) report that people who move from home
to home frequently as children tend to lower than average levels of
well being as adults. To further examine the relationships, a
psychologist obtains a sample of n=12 young adults who
each experienced 5 or more different homes before they were 16
years old. These participants were given a standardized well-being
questionnaire for which the general population has an average score
of µ= 40. The well-being scores for this...

2. In a country called Karpee's Nation, Sixty (60) persons were
asked about their ages in completed years and they responded as
follow:
34 34 40 42 40 42 29 30 28 44 25 37 37 42 29 33
34 29 43 41 25 40 37 33 32 37 40 51 28 27 31 64
38 40 30 41 51 30 48 24 28 33 35 40 31 29 35 46
27 34 28 29 35 30 29...

Given the following sample data, what would be the Upper and
Lower +/- 3 Sigma Control Limits for the corresponding X-bar
chart?
Sample
Obs X1
Obs X2
Obs X3
Obs X4
Obs X5
Obs X6
1
36
20
32
28
21
40
2
31
38
35
38
33
32
3
33
28
36
31
25
25
4
38
25
32
40
29
39
5
38
30
28
30
31
31

A sample of 20 test scores were taken from a normally
distributed population produced the following data. Suppose we want
to estimate the true mean test score of all using the ample
values.
44 52 31 48 46 39 47 36 41 57 45 52 31
48 46 39 47 38 41 59
Identify the parameter. Is it known?
Make a 95% confidence interval for the mean score of all. Take
the population standard deviation as 2.5.

A simple random sample of 31 cans of generic soda had their
caffeine levels measured, in milligrams per 12 ounce serving. The
data is given below. Find the 99% confidence interval estimate of
the mean amount of caffeine in the entire population of this
generic soda.
34
35
35
36
36
36
38
38
38
38
38
39
40 40
41
42 43
43
...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 6 minutes ago

asked 35 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