A salesman at a clothing store makes a sale to 30% of the customers he talks to, and wants to try out a new tecnique to see if he can change this rate. He decides to collect data for a few months on the percentage of customers he makes a sale to, and he is able to construct a 95% confidence interval of (.3095, .3275). Is there evidence at 5% significance that he has changed his average sales?

Answers

Answer 1

Answer:

Yes, we can conclude that average sales has changed.

Step-by-step explanation:

The null hypothesis, H0 : μ = 0.3

The alternative ; H0 : μ ≠ 0.3

The result of the 95% confidence interval of (.3095, .3275); This shows that the confidence interval is now between 30.95% and 32.75% ; since μ does not lie within the confidence interval value and the lower boundary of the confidence interval is > 30; we Can conclude with an evidence of 5% significance that his average sales as changed (increased).

We can reject H0 and conclude that μ > 0.3


Related Questions

HELP ME PLZZ: Francesca is making a scale drawing of the mural on a wall in her school's hallway. The mural is 12 ft high and 135 ft long. She is using a sale of 3 cm for every 4 ft. What are the dimensions of her scale drawing?

Answers

Answer:

i think ur supposed to do 135 divided by 3?

Step-by-step explanation:

tell me if im right or wrong so then i can help

The height of the mural drawing is 9 inches while the length is 101.25 inches.

What is the scale factor?

You must specify the extent of the shape's enlargement when describing one.

The scale factor is the ratio of two dimensions such that one figure is large and another is small.

The scale factor is done due to the unpractical measurement of any figure.

Hight of the mural = is 12 feet

⇒ 12 × 12 = 144 inches.

Length of mural = 135 feet

⇒ 1620 inches.

Now,

She is using 3 cm for every 4 feet(4×12 = 48 inches)

Scale factor = 3/48 = 1 : 16

Now,

Length of mural drawing = 144/16 = 9 inches.

Height of mural drawing = 1620/16 = 101.25 inches.

Hence "The height of the mural drawing is 9 inches while the length is 101.25 inches".

To learn more about scale factors,

brainly.com/question/22312172

#SPJ2

I NEED HELP ASAP!!!
If angle MNO = 80, find angle M
If Type your answer as an integer or round to the nearest tenth.

Answers

Answer:

Since the triangle we are dealing with is an isosceles triangle if MNO is 80° that means angle <OMN and < NOM are equal. Take 180°- 80°= 100°. Then divide by two to get each angle to get 50°.

Step-by-step explanation:

About integers and rounding off. Oopsie but we don't do it in Kenyan Syllabus. Hope I was helpful✌☺.

Freddy exercise 3.5 hours per day 4 days last week he burned 440 calories per hour while exercising how many calories did Freddie burn by exercising last week​

Answers

Answer:

6,160 calories

Step-by-step explanation:

total hours of exercising = 3.5 x 4 = 14

burns 440 calories per each hour

total calories burned is 440 x 14

2
Find the equation of the line shown.
Find the equation of the line shown. *
(10 Points)
y=3x+4
y=-1/2x-3
y=5x-12
y=1/2x+3

Answers

Answer is

y= -1/2x-3

Explanation

What is 12/100 as a percentage?

Answers

Answer:

12%

Step-by-step explanation:

Answer:

It is 12%

Step-by-step explanation:

What is the exact volume of the cone?


A 80π ft³


B 4003π ft³


C 400π ft³


D 418710π ft³

Answers

C hope that helped have a great time I love it you can do
The correct answer is letter u

HELP PLS ASAP PLS PLS DUE SOON

Answers

Answer:

blank 1: 63 degrees

heart if it helped!

Please help me it’s due soon!!

Answers

Answer:

12√2

Step-by-step explanation:

It's 12√2 because the hypotenuse of the triangle is 12. that means for a^2 + b^2 = c^2, we get c^2 = 144. a and b are equal so the answer is 6√2.

Also, don't any links you see on this site, they are hackers

hey please help me with this ty

Answers

Answer:

3d

Step-by-step explanation:

3 miles per day

if he runs for two days he runs 6 miles 3(2)

etc etc

what is 38% of 32.

pls help in the middle of testing ​

Answers

Answer:

12.16

Step-by-step explanation:

1:Reduce the fraction 100 38 ​ to lowest terms by extracting and canceling out

2:Express 50/19 ​ ×32 as a single fraction.

3:Multiply 19 and 32 to get 608.

4:Reduce the fraction 608/50 ​ to lowest terms by extracting and canceling out 2.

5:304/25=(12.16).

PLEASE HELP!!!!! WORTH 40 POINTS

Answers

Answer:

B : 3/2

Step-by-step explanation:

Answer:

hi

Step-by-step explanation:

answer is B. i think so...

[tex] \frac{54}{36} = \frac{3}{2} [/tex]

have a nice day

A tourist attraction experienced a 3.75% fall in visitor numbers in June, compared to the previous month due to bad weather There were 121660 visitors in June How many visitors were there in May? B) In July there were 4.5% more visitors than in May What was the percentage increase in visitor numbers from June to July?

Answers

Answer:

(A) 126400

(B) 8.57%

Step-by-step explanation:

(A) According to the scenario, calculation of the given data are as follows,

Visitors in June = 121660

Let visitors in May = X

Difference in visitors number in June = 3.75% decrease

So, we can calculate the visitors number in may by using following formula,

Number of visitors in June = X - 3.75%X

121660 = 96.25%X

X = (121660 × 100) ÷ 96.25

X = 126400

Hence, Number of visitors in may = 126400

(B). Difference in visitors in July than in May = 4.5% increase

So, Number of visitors in July = 126400 + (126400 × 4.5%)

= 126400 + 5688

= 132088

Now, we will calculate increase in percentage by using following formula,

Increase percentage = (132088 - 121660)  ÷ 121660

= 10428 ÷ 121660

= 0.0857 or 8.57%

what is the equation of the line that passes through the point (-6,-5) slope of 3/2?​

Answers

It is y=3/2x+b
-5=3/2(-6)+b
-5=-9+b
4=b

James ran a race in 2.2 hours. Casey ran the same race in 2.25 hours. Who took less time to run the race?

Answers

Answer: James

Step-by-step explanation: 2.2 is less than 2.25.

Find the measure of angle y in the following figure.

Answers

Answer:

[tex]50^{o}[/tex]

Step-by-step explanation:

90 + 40 = 130

180 - 130 = 50

What value of x makes the equation true?
3 - 14x = 17
A-1
B-1
C-28
D-2

Answers

Answer:

3 -14x =17

-14x = 17 - 3

-14x = 14

x = 14/-14 = 1/-1 = -1

∴ answer = -1

hope this answer helps you.....

please mark as brainliest... thank you!

I think it’s an ac130 or an a10

Solve the system by substitution.

-5x+2y=-42

6x=y

Answers

Step-by-step explanation:

since y=6x

by substitution

-5x+ 2 (6x)= -42

-5x+ 12x=-42

7x= - 42

divide both sides by 7

x= 6

y=6x

y =6*6

y=36

What would be the coordinates of Point D to complete square ABCD? Ay B 2. A Х -2 o 2. 2. С (2.2) (2, 2) (-2,2 (2-2)

Answers

Answer:

D: which is (2, -2)

Step-by-step explanation:

.............................................................................................................................................................................................................................................h......................................................................................................................................................................e........................................................................................................................................................................l.........................................................................................................................................................................p

Answers

Answer:

Steps To Find The Distance Between Two Planes

Write equations in standard format for both planes.

Learn if the two planes are parallel.

Identify the coefficients a, b, c, and d from one plane equation.

Find a point (x1, y1, z1) in the other plane.

Substitute for a, b, c, d, x1, y1 and z1 into the distance formula.

Step-by-step explanation:


Greg bought a jacket for $35.23, a flag for $10.75, and a baseball cap for $17.25. He paid $50 and
the rest he borrowed from his friend. If Greg got $6.77 in change from the cashier, how much did he
borrow from his friend to pay for all the items?

Answers

Answer:

His friend gave Greg a 20$ bill.

Step-by-step explanation:

35.23+10.75+17.25=63.23

63.23-50= 13.23

13.23+6.77= 20

Answer:

He borrowed $6.46

Step-by-step explanation:

Add the totals up together. 35.23 + 10.75 + 17.25 to get 63.23

Subtract 50 from 63.23 (63.23 - 50.00) to get 13.23.

Subtract 6.77 from 13.23 (13.23 - 6.77) to get 6.46.

He borrowed $6.46 from his friend!

Hope this helps! Pls make brainliest

This is for now I need help pls !!!!!!!

Answers

10 in would be iquviletnt to 30 but you do 30 so I belive it would be 50

Help me out here. Math eh not my thing. :P

Answers

Answer:

Question 13 is the third one. Number 15 is the second one.

You are planning a backpacking trip. You must hike a minimum of 11 miles each day in order to complete the trip in the time you have available. Write an inequality to represent the situation. Let x represent the number of miles you must hike each day.

Answers

Answer:

x≥11

Step-by-step explanation:

The information provided indicates that you have to hike minimum 11 miles each day to be able to complete the trip in the time you have and this means that the number of miles you hike each day has to be greater than or equal to 11 and this can be expressed as:

x≥11, where:

x is the number of miles you must hike each day.

Can someone please answer with explanation

Answers

Answer:

This percent is a decrease

11 people quit

Step-by-step explanation:

Shanti is making a patchwork quilt. Each piece of fabric has a black star on it. She uses the grid shown to plan the locations of the different fabric squares.

a. What transformation maps square 1 onto square 2?
b. What transformation maps square 2 onto square 3?
c. What transformation maps square 1 onto square 5?

Answers

Answer:

A) Translation

B) Reflection

C) Rotation

Step-by-step explanation:

The transformation types in mathematics are;

Reflection, translation, rotation and dilation.

We can see that the squares are all the same size, it's just the position of the stars that will aid us in knowing the specific transformation.

A) We can see that square 2 is the exact same thing as square 1. Just that it was shifted to the right of square 1. Thus, it was translated and the transformation is translation.

B) We can see that the star in square 3 is the exact mirror copy and location from square 2. Thus, this is a reflection.

C) We can see that the position of the star in square 5 is top while that in square 1 is at the left corner. This can only be achieved by rotation.

find the value of x and y​

Answers

Answer:

It's hard to make out which is x and y, if x is lower right and y is at the top, then:

x = 55°

y = 70°

Step-by-step explanation:

x = 55° because it is an isosceles triangle

y = 180° - 55° - 55° = 70°

PLEASE HELP FAST 15 POINTS ANDWER IF YOU ONLY KNOW!

Answers

Answer:

i can see the question in ascending order

WILL GIVE BRAINLIEST FOR RIGHT ANSWER 16 POINTS

Answers

Answer:

Absolute value means 2 equations so work below.

Step-by-step explanation:

x + 2 = 3

x = -1

x - 2 = 3

x = 5

I hope I didn't just confuse myself it's been YEARS since i've had simple questions like this (i can edit if needed)

HELP ME angle-angle similarity

Answers

EBK THE ANSWER IS Y O U R M O M I S G A Y

help will mark brainliest

Answers

Answer:

The answer to the question is d

Answer:

D

Step-by-step explanation:

The equation has just 1 answer and that is 0

Value of x can only be 1 as this is a linear equation not a quadratic

Please mark my answer as brainliest for further answers:)

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