Wells Fargo has realized that they lose home mortgage business to other banks that can process the loan applications with less variability in the time it takes to process each application. The bank recently studied this problem, and found that the processing time T is normally distributed with a mean of 13 days. They didnt measure the standard deviation, but they know that 50% of all applications were processed in between 10.5 and 15.5 days. After learning all this, they then fired half of their mortgage loan officers and replaced them with new recruits. They then sampled 25 applications, and found a sample mean of 13 days (same as the old) and a sample standard deviation of 2.5 days.
(a) Test whether their actions have significantly changed their processing time T.
(b) Based on the sample of 25 applications, give a 90% confidence interval for the parameter that
has changed.

Answers

Answer 1

Answer: B

Step-by-step explanation:


Related Questions

Graph y = 2.3 - 7.
y

AU
8+
7+
6+
5
CO
3+
2+
1+
MY
-9-8-7 -6 -5 4 -3 -2
1 2 3 4 5 6 7 8 9
Cou
-3
SA
-5-
-6-
-7-
-8
MY
Pra

Answers

Answer:

4b+7h+935*213

Step-by-step explanation:

Plz help me with this it’s really important

Answers

Answer:

axis of symmetry is 2

vertex is (2,-4)

Step-by-step explanation:

I hope this helps.

Somebody please help me!!!

Answers

Answer:

Step-by-step explanation:

(2,4)

Answer:

Step-by-step explanation:

PLEASE ANSWER ASAP!!!!!BRAINLIEST!!!!!!
( -2) + (+8) =
( -9) + ( -7) =
( -4) + ( -9) =
(-7) + (+7) =

Answers

Answer:

6

-16

-5

0

Step-by-step explanation:

Step-by-step explanation:

(-2) + (+8) = 6

(-9) + (-7) = -16

(-4) + (-9) = -5

(-7) + (+7) = 0

brookside grocery sponsored a team in the local charity run. the ages of the runners are shown below. 35, 23, 45, 21, 18, 19, 54, 46, 37 , 25, 29, 18, 33, a histogram is made using the runner's age which quantity best represents the bar on the histogram that shows the age range 25 through 34​

Answers

Answer:

C

Step-by-step explanation:

How many times larger than
(8 + 22) is 8 x (8 + 22)?

Answers

Answer:

8

Step-by-step explanation:

8+22 = 30

In order to solve 8 • (8+22), we'll need to use the order of operations. First, complete what is in parenthesis.

8 • (8+22)

30

Then, multiply 30 by 8.

30 • 8 = 240.

So, you can then divide to find your answer. If you divide 240 by 30, you will find that 8 • (8+22) is 8 times larger than 8+22.

Answer:

8 times larger

Step-by-step explanation:

The 12 girls on the dance team want to raise $300.00 to buy practice shoes. They have already raised $137.52. If each girl raises the same amount, how much more money must each student raise?

A. $13.54
B. $25.00
C. $11.46
D. $36.46

Answers

it would be A $13.54

Given the function h(t) = 2t second power + 9, evaluate h(5).​

Answers

Step-by-step explanation:

hope this help you! have a great day

Mark went to the bookstore. He bought 3
books for $6.00 each and two magazines
for $3.50 each. He received a 25% discount
on his purchase. If he handed the cashier
$20, how much change did Mark get back?

Answers

Answer: $1.25

Step-by-step explanation: (6*3) = 18 + (2*3.50)= 7

18+7=25

25*.25= 6.25

25-6.25= 18.75

20-18.75 = 1.25

How many solutions will the equation have?
|x + 3| = -4

Answers

one solution that is -7

Answer:

-7 only one solution.

Step-by-step explanation:

Thirty students are at soccer practice. Each group of three students needs a soccer ball and two field cones . How many balls and cones are needed in all? balls ___. cones ____.

Answers

Answer:

10 soccer balls

20 cones

Step-by-step explanation:

30/3=10 groups

10*2=20

1) Mr. Rios bought a house in 1960 for $20,000. The value of the house increased by
approximately 5% each year. Which of the following equations will give the value, A, the
approximate value of the house after x years?
A- A = 20000(0.5)*
B- A = 20000(1.5)
C- A = 20000(0.05)
D- A = 20000(1.05)*

Answers

Answer:

A = 20,000(1.05)^x

Step-by-step explanation:

To get the approximate value of the house after x years, we will use the compound interest formula

A  = P(1+r)^n

P is the principal = $20,000 (cost of house)

r is the rate = 5% = 0.05

x is the time

Substitute into the expressio

A = 20,000(1+0.05)^x

A = 20,000(1.05)^x

Hence the required expression is A = 20,000(1.05)^x

The sum of 42 and x is equal to 97.45. What's the equation for the sentence?!! Help!

Answers

Answer:

X = 97.45 - 42

Step-by-step explanation:

If 42 + X = 97.45, X needs to be 97.45 - 42

you can do the same thing with smaller numbers, for example:

5 + X = 7

7 - 5= 2 and you can check for sure that this is the answer by adding them together 5 + 2= 7 so it's definitely the right answer

so for this question, 97.45- 42 = 55.45 so that's X

you can check that by 55.45 + 42 and if the answer is 97.45 that's the right answer!

I hope that makes sense

.15 x (4.3 - 2.417 )

Answers

Answer: .15 x 1.883 = 0.28245

Answer:

28.24500

Step-by-step explanation:

Can I get help please????

Answers

The answer will be HL

What is the value of b in ax - by = -5

A. b= (ax-5)/y
B. b= 5-ax
C. b= ax-5y
D. Cant isolate b

Answers

Answer:

D,

Step-by-step explanation:

the is the value of b in ax -by =-5

D , cant isolate b

Question 8 of 10 What is the median of this data set? 14, 18, 31, 34, 44, 50 A. 32.5 B. 33 C. 31.5 O O D. 31 SUBM​

Answers

Answer:

32.5

Step-by-step explanation:

median is the middle number, in this case the sum of the two middle number divided by 2

31 + 34 = 65/2

32.5

Answer:

33

Step-by-step explanation:

Tres veces un número x, restado de 18 es menor que -90

Answers

The answer is linked below

Jean's bedroom is 10 feet by 12 feet. She has chosen a carpet which costs $31.35 per square yard. This includes
installation
Determine her cost to carpet her room.
PLEASE NO LINKS, thanks

Answers

Answer:

416.67$

Step-by-step explanation:

First, the units of the price are using square yards. To simplify early, we can convert the sides to yards.

Bedroom dimensions: 10/3 yards by 4 yards.

Since the cost is by area unit, we can find the area by multiplying the dimensions(assuming the bedroom is a square), yielding us 40/3 square yards.

Now multiplying the square yards by the price gets us:

[tex]\frac{40}{3}yards^{2} * 31.35 * 1/yards^2 =[/tex]416.67$

help pls what is 4.05 × 0.8 ​

Answers

Answer:

3.24

Step-by-step explanation:

character requirement

Answer:

3.24

Step-by-step explanation:

You could have used a calculator my dude. XD

Does anyone know what the answer

Answers

122-71=51
Angle DBC is 51 degrees
Good luck

HELPPPPP! Tamlin collects action figures and has 2 more female action figures than male action figures. He chooses two action figures randomly. Write and simplify an expression that represents the probability that Tamlin will pick two female action figures without replacing the first action figure. Let x be the number of male action figures.

Answers

Answer:

x+2/2(2x+1)

Step-by-step explanation:

Tamlin has x male action figures and x + 2 female action figures, so a total of x + x + 2, or 2x + 2 action figures. The probability of picking two female action figures without replacement is equal to the product of the probability of

-picking 1 female action figure from the total number and

-picking 1 female action figure after 1 has been removed.

The probability of picking 1 female action figure from the total is equal to the total number of female action figures divided by the total number of action figures.

The probability of picking 1 female action figure after 1 has been removed is equal to the total number of female action figures minus 1 divided by the total number of action figures minus 1.

Multiply these two expressions and simplify.

Answer:

The answer is x+2/2(2x+1)

Please find the area of the figure.

Answers

Answer:

The answer would be 179.4 km^2

Step-by-step explanation:

To find the area of a trapezoid, the formula is: A= a+b/2 h

I just took a screenshot of the work to make it easier

Hope it helps

Determine any data values that are missing from the table, assuming that the data represent a linear function.
X Y
7 16
9 17
18
13
a Missing x:13
Missing y:20
b. Missing x:13
Missing y.19
C. Missing x:11
Missing y:20
d. Missing x:11
Missing y:19

Answers

Answer:

well y is 19 and x is 11

Step-by-step explanation:

all I did is add one for a while then after that I go and I put 9 + 4 which equals 13 then in between 13 is 11 so I divided 13 by 2 basically and it's just 11

Jasmine is part of a bowling league and wants to beat the team record of an average score of 240 out of 300 possible points per game. Her scores for the first five games are 252, 227, 210, 239, 242. What must Jasmine score in her sixth game to beat the team record for average points per game?​

Answers

Answer:

her score in sixth game is 270

Step-by-step explanation:

The computation of the Jasmine score in her sixth game is shown below:

Let us assume her sixth game score is x

And, the first five games are 252, 227, 210, 239, 242

And, the average score is 240

So, the following formula should be used

(252 + 227 + 210 + 239 + 242 + x) ÷ 6 = 240

252 + 227 + 210 + 239 + 242 + x = 240 × 6  

252 + 227 + 210 + 239 + 242 + x = 1,440

x = 270

Hence, her score in sixth game is 270


Find how many quarts of 5% butterfat milk and 2% butterfat milk should be mixed to yield 45 quarts of 3% butterfat milk.
The mixture should contain quarts of the 5% butterfat milk.

Answers

Answer:

It would take 4 quarts of 5% buttermilk and 41 quarts of 2% buttermilk to make 45 quarts of 3% buttermilk.

Step-by-step explanation:

Let the number of 5% quarts = x

Let the number of 2% quarts = y

x+y=45

y=45-x

(.05)x+(.02)y=(0.03)45

5x+2y=102

5x+2(45-x)=102

5x+90-2x=102

3x=12

x=4

y=45-x=45-4=41

So it would take 4 quarts of 5% buttermilk and 41 quarts of 2% buttermilk to make 45 quarts of 3% buttermilk.

Every year in the United States the public transportation reports a number of alcohol related and non alcohol related highway deaths from 2001 to 2010

Answers

Answer:

dam

Step-by-step explanation:

The perimeter of the figure below is 219.1 cm. Find the length of the missing side.
14.6 cm
15-5 cm
15-5 cm
15.5 cm
15.5 cm
15-5 cm
15-5 cm
15-5 cm
15-5 cm
32 cm
32 cm
?

Answers

Answer:

16.5

Step-by-step explanation:

4(q+6) expanded
eeeeeeeeeeeeeeee

Answers

Answer:

expanded version of 4(q+6) should be 4q+24

Step-by-step explanation:

just multiply 4 and q, 4 and 6. and add it.

[tex]\huge\text{Hey there!}[/tex]

[tex]\huge\textsf{4(p + 6)}[/tex]

[tex]\huge\text{DISTRIBUTE 4 WITHIN the PARENTHESES}[/tex]

[tex]\huge\textsf{4(p) + 4(6)}[/tex]

[tex]\huge\textsf{4(p) = \boxed{\bf 4p}}\huge\checkmark[/tex]

[tex]\huge\textsf{4(6) = \boxed{\bf 24}}\huge\checkmark[/tex]

[tex]\huge\checkmark\boxed{\huge\textsf{\bf 4p + 24}}\huge\checkmark[/tex]

[tex]\boxed{\boxed{\huge\textsf{Answer: \bf 4p + 24}}}\huge\checkmark[/tex]

[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

A parabola has a vertex at (-5,3). What is the equation of the parabola?

Answers

Answer: I took a screen shot hope it helps

Step-by-step explanation:

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