Question

The mean salary of federal government employees on the General Schedule is $59,593. The average salary of 30 state employees who do similar work is $58,800 with σσ= $1500. At the 0.01 level of significance, can it be concluded that state employees earn on average less than federal employees?

The mean age of Senators in the 109th Congress was 60.35 years. A random sample of 40 senators from various state senates had an average age of 55.4 years, and the population standard deviation is 6.5 years. At αα= 0.05, is there sufficient evidence that state senators are on average younger than the Senators in Washington?

Find the p-value, using the following information.

The test statistic in a left-tailed test is z = -1.25.

Answer #1

The mean salary of federal government employees on the General
Schedule is $59,593. The average salary of 30 state employees who
do similar work is $58,800 with \sigma σ σ = $1500. At the 0.01
level of significance, can it be concluded that state employees
earn on average less than federal employees? What is the critical
value? Round your answer to the nearest hundredths.

The mean age of Senators in the 109th Congress was 60.35 years.
A random sample of 40 senators from various state senates had an
average age of 55.4 years, and the population standard deviation is
6.5 years. At α= 0.05, is there sufficient evidence that state
senators are on average younger than the Senators in
Washington?
Which of the following is a correct conclusion:
a) There is sufficient evidence to warrant rejection of the
claim that state senators are on...

The mean age of Senators in the 109th Congress was 60.35 years.
A random sample of 40 senators from various state senates had an
average age of 55.4 years, and the population standard deviation is
6.5 years. At \alpha α = 0.05, is there sufficient evidence that
state senators are on average younger than the Senators in
Washington? What is the critical value? Round your answer to the
nearest hundredths.

A random sample of 40 senators from various states had an
average age of 55.4 years, and the population standard deviation is
6.5 years. α = .05, is there sufficient evidence to conclude that
senators are on average younger than 60.35? What is the value of
the standardized test statistic?

The average annual salary of employees at Wintertime
Sports was $28,750 last year. This year the company opened another
store. Suppose a random sample of 18 employees had an average
annual salary of x = $25,810 with sample standard deviation of s =
$4,230. Use a 1% level of significance to test the claim that the
average annual salary for all employees is different from last
year’s average salary.
State the null and alternate hypotheses. Is the test
left-tailed, right-tailed,...

The average retirement age in America is 64 years old. Do small
business owners retire at a younger average age? The data below
shows the results of a survey of small business owners who have
recently retired. Assume that the distribution of the population is
normal.
69, 53, 50, 58, 69, 68, 68, 51, 70, 67, 60, 55, 63, 56, 53,
69
What can be concluded at the the αα = 0.10 level of significance
level of significance?
For this...

The average retirement age in America is 64 years old. Do small
business owners retire at a younger average age? The data below
shows the results of a survey of small business owners who have
recently retired. Assume that the distribution of the population is
normal.
64, 59, 67, 58, 54, 63, 54, 63, 62, 56, 59, 67
What can be concluded at the the αα = 0.01 level of significance
level of significance?
For this study, we should use...

The table below shows the average weekly wages? (in dollars) for
state government employees and federal government employees for 10
years. Construct and interpret a 90% prediction interval for the
average weekly wages of federal government employees when the
average weekly wages of state government employees is $847.
The equation of the regression line is ModifyingAbove
y=1.527x-117.366 .
Wages (state), x Wages (federal), y
757 1,020
771 1,045
793 1,107
810 1,144
858 1,184
883 1,249
911 1,280
939 1,305...

The average salary in this city is $42,400. Is the average more
for single people? 46 randomly selected single people who were
surveyed had an average salary of $42,907 and a standard deviation
of $11,240. What can be concluded at the αα = 0.01 level of
significance?
For this study, we should use Select an answer z-test for a
population mean t-test for a population mean
The null and alternative hypotheses would be:
H0:H0: ? p μ Select an answer = ≤...

The average salary in this city is $47,300. Is the average less
for single people? 60 randomly selected single people who were
surveyed had an average salary of $46,132 and a standard deviation
of $10,540. What can be concluded at the αα= 0.05 level of
significance?
For this study, we should use Select an answer t-test for a
population mean z-test for a population proportion
The null and alternative hypotheses would be:
H0: ? μ p ? > = ≠
< ...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 5 minutes ago

asked 10 minutes ago

asked 25 minutes ago

asked 40 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago

asked 4 hours ago

asked 4 hours ago