The annual earnings of 25 people with a high school diploma and
16 people with an...
The annual earnings of 25 people with a high school diploma and
16 people with an associate degree are shown below. Can you
conclude that there is a difference in the mean annual earnings
based on level of education? Assume that population are normally
distributed and population variances are not
equal.
High school diploma
Associate degree
x1=$36,875
x2=$44,900
s1=$5475
s2=$8580
n1=25
n2=16
Identify the claim and state the null and alternative
hypothesis.
What type of statistical test should be used to answer the
researcher’s question?
(Note: Is this a z-test or a t-test?
One sample, dependent sample or independent sample)
Find the standardized test statistic and corresponding critical
value(s).
At 0.05 significance level, decide whether to reject or fail to
reject the null hypothesis.
Interpret the decision in the context of the original
claim.
The annual earnings for persons with high-school diploma is
$60000, versus $70000 for someone with a bachelor's degree. cost of
attending college is equivalent future value of $400000 at
graduation. working for 35 years after graduation. Find the
internal rate or return of earning a bachelor's degree
In a simple random sample of 1600 young people, 86% had earned
a high school diploma. Complete parts a through d below. a. What is
the standard error for this estimate of the percentage of all young
people who earned a high school diploma? .0096 nothing (Round to
four decimal places as needed.) b. Find the margin of error,
using a 95% confidence level, for estimating the percentage of
all young people who earned a high school diploma. nothing%
(Round...
In a survey of 100 U.S. residents with a high school diploma as
their highest educational degree (Group 1) had an average yearly
income was $35,621. Another 120 U.S. residents with a GED (Group 2)
had an average yearly income of $33,498. The population standard
deviation for both populations is known to be $4,310. At a 0.01
level of significance, can it be concluded that U.S. residents with
a high school diploma make significantly more than those with a
GED?...
Suppose the scores of a certain high school diploma test
follow a normal distribution in the population with a mean of 195
and standard deviation of 30.
1. About ______ percent of the students have a
score between 135 and 195.
2. About ______ percent of the students have a score between 225
and 255.
3. The middle 95% of the students have a score between
________ and ________ .
4. Recently class A just had a Math exam, but class B...
Analyze unemployment-related issues -- High unemployment rate
among workers with high school diploma or less
Study the past trends, provide an overview of the current
status, and provide solutions to overcome any problems related to
the issue you are studying. Use data, articles, and government
reports to draw a clear picture of the current unemployment
issues.
Your research needs to be structured with consistent and clear
thoughts. It also needs to be supported by facts and data. Your
results need...
3. Consider the labor market for low-skilled workers: those who
lack a high-school diploma and any experience in a skilled
trade.
a) Suppose that the equilibrium wage for low-skilled workers in
Idaho is $9.00 / hour and equilibrium quantity is 45,000. Draw a
labor-market supply/demand graph that illustrates that
equilibrium.
The student population
of the Corona High School is 750. The school has 25 standard
classrooms. Assuming a 5-day school week with solid waste pickups
on Monday and Thursday, determine the lowest cost combination of
waste containers required.
Assume waste is
generated at a rate of 0.10 kg/cap·day plus 4
kg per room per day and that the density of uncompacted solid waste
is 120.0 kg/m3. Standard container sizes available and
weekly rental fees are:
1.5 m3 @
$45 /...
It is known that 76.3% of all high school students age 16 or
older in the United States have driven a car in the past month.
Suppose you take a random sample of 82 high school students age 16
or older. What is the probability that less than 70% of the
students in your sample have driven a car in the past month?
a) 0.0901
b) 0.1075
c) 0.2776
d) this cannot be determined as the central limit theorem
conditions...
The following is a random sample of the annual salaries of high
school counselors in the United States. Assuming that the
distribution of salaries is approximately normal, construct a 90%
confidence interval for the mean salary of high school counselors
across the United States. Round to the nearest dollar.
$55,250, $46,540, $42,120, $58,740, $38,010, $43,650,
$65,640
2.In a high school, 16% are Freshmen, 14% are Sophomores, 38%
are Juniors, and 32% are Seniors. Suppose 15 students are randomly
selected. Find the probability that
a) 4 are Freshmen, 5 are Sophomores, and the rest are neither
Freshmen nor Sophomores (in any order)
b) either exactly one is Senior and all the others are not
Senior (in any order) or exactly one Freshman, one Sophomore, one
Junior and all the others are Seniors ( in any order)
Note:...