Question

1.The age of each State Governor

2.The speed of every fifth car passing a police trap

3.The annual salary for each employee at a company.

4.The number of pets in each U.S household.

Answer #1

A population is the set of all possible values of a variable in interest .

And a sample is a subset of a population .

1. The age of all state governor , consists of all possible values of thea variable age of governor .

So it is a population .

2. It consists of the speed of every 5th car passing , and not the speed of all car passing . So it is a sample .

3. Salary of each employee , so it is a population .

4. The number of pets in each household . So, it is a population

- Classifying Data by Type: determine whether the data
are qualitative or quantitative. Explain your
reasoning.
The monthly salaries of the employees at an engineering
firm
The Social Security numbers of the employees at an engineering
firm
The ages of a sample of 330 employees of a engineering
company

A car insurance company performed a study to determine whether
an association exists between age and the frequency of car
accidents. They obtained the following sample data.
under 25
25-45
over 45
total
number of
0
74
90
84
248
accidents in
1
19
8
12
39
past 3 years
>1
7
2
4
13
total
100
100
100
300
Conduct a test, at the 5% significance level, to determine
whether the data provide sufficient evidence to conclude that an...

For each of the following sets, determine whether they are
countable or uncountable (explain your reasoning). For countable
sets, provide some explicit counting scheme and list the first 20
elements according to your scheme. (a) The set [0, 1]R ×
[0, 1]R = {(x, y) | x, y ∈ R, 0 ≤ x ≤ 1, 0 ≤ y ≤ 1}.
(b) The set [0, 1]Q × [0, 1]Q = {(x, y) |
x, y ∈ Q, 0 ≤ x ≤...

Indicate whether each data set described is continuous or
discrete.
An employer uses web tracking software to record the exact
amount of time each day that an employee spends on social media
while using a company laptop.

Situation:
A survey was conducted to determine
whether a proposed federal law should be passed to over haul the
health care system in U.S. The following data was collected
recording the number of people favoring the law based on their age
group. It is believed that the distribution of the people favoring
passing the law varies based on the age of the survey
participants.
Action:
Using the chi-square goodness of fit
test and either Excel or Minitab, determine whether age...

Set up hypotheses for the following
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z-test or t-test would be recommended to evaluate
the hypotheses. If a t-test is recommended, how many
degrees of freedom should be used?
The EU wants to examine statistics on refugees’ ages.
Historically, the mean age of refugees arriving in Europe is 27.5
years old with a standard deviation of 3.1 years. In 2015, the...

8.Study Type: For each of the following situations state whether
the research is an observational study or a designed experiment.
Explain your reasoning for your answer.
A) Recall Problem #3, in Grand Haven, Michigan, the speed limit
on Mercury Drive is 45 mph. Residents with a driveway leading out
to the road often complain that traffic tends to exceed 45 mph. A
traffic engineer installs a device that records the speed of each
car that passes a certain point on...

Each of the following scenarios would be described with a
regression analysis. State the response variable, The explanatory
variable (S), if any. Be sure to state units were appropriate.
We would like to explain the annual salary over employees (in
thousands of dollars) which data showing their years of experience
and education level (high school, college, or graduate
degree).
We own a pizza franchise and have data regarding a city’s
median income (in dollars), average number of individuals for
household,...

Indicate whether each data set described is continuous or
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several days are recorded.
3) The Clerk of the US House of Representatives records the
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To determine whether the cash bonus paid by a company is related
to annyual pay, data were gathered for 10 loan officers at AMC Bank
who received cash bonuses in 2017. The data are shown.
annual pay
bonus
$70,609
$11,225
$58,487
$6,238
$104,561
$14,194
$43,922
$4,188
$82,613
$11,863
$116,250
$13,671
$76,751
$7,758
$68,513
$20,760
$137,000
$55,000
$94,469
$34,368
Draw a scatter plot for this data. Treat the annual pay as the
explanatory (x) variable. Include a trend line.
Is there...

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