Author Question: An automobile dealer wants to see if there is a relationship between monthly sales and the interest ... (Read 64 times)

amymoore · **on:** Mar 25, 2023

Question 1

A regression and correlation analysis resulted in the following information regarding an independent variable (x) and a dependent variable (y).

ΣX = 42

ΣY = 63

n = 7

Σ (Y - )(X - ) = 37

Σ (X - )² = 84

Σ (Y -

a.	= 6.3571 + 0.4405x
b.	p-value < .05; reject H_o
c.	p-value < .05; reject H_o
d.	0.582

Question 2

An automobile dealer wants to see if there is a relationship between monthly sales and the interest rate. A random sample of 4 months was taken. The results of the sample are presented below. The estimated least squares regression equation is

= 75.061 - 6.254X

Y	X
Monthly Sales	Interest Rate (In Percent)
22	9.2
20	7.6
10	10.4
45	5.3

a.	Obtain a measure of how well the estimated regression line fits the data.
b.	You want to test to see if there is a significant relationship between the interest rate and monthly sales at the 1% level of significance. State the null and alternative hypotheses.
c.	At 99% confidence, test the hypotheses.
d.	Construct a 99% confidence interval for the average monthly sales for all months with a 10% interest rate.
e.	Construct a 99% confidence interval for the monthly sales of one month with a 10% interest rate.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7^th Edition

Buy Test-Bank

Need homework help now?

Ask unlimited questions for free

Ask a Question

Marked as best answer by amymoore on Mar 25, 2023

GoldenBrown

Full Member
Posts: 166

Reply #1 on: Mar 25, 2023

A FREE account is required to view all solutions!

Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.

Answer Preview

Only 25% of students answer this correctly

amymoore

Member
Posts: 161

Reply 2 on: Mar 25, 2023

Wow, this really help

yeungji

Member
Posts: 319

Reply 3 on: Yesterday

Excellent

Print

« previous next »

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

The monthly changes of angle between the direction of illumination by the Sun and viewing from Earth

Graph showing the relationship between the freezing point of the coolant and the percentage of ...

An antique automobile bumper is to be chrome plated. The bumper, which is dipped into an acidic ...

The relationship between maternal age and the frequency of trisomy 21 (Down syndrome). The risk incr

Relationship Between the Atlas and the Axis. The Dens of the Axis Provides a Pivotal Point Around Wh

The relationship between acid–base imbalances and potassium imbalances