1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
olya-2409 [2.1K]
2 years ago
13

A new actuarial test (Test A) was developed as a possible replacement for an old actuarial test (Test B). An actuary claimed tha

t the mean time to complete the new test A was more than the mean time to complete an old test B. The summary data for completion time (in minutes) are as follows.
Test A : n=9, X bar=160 minutes, S2=180 minutes
Test B : n=10 X bar=150 minutes, S2=30 minutes

a.At α=10%, use the Classical approach to test the actuary’s claim.
b.Using the P-value approach to conclude it.
Mathematics
1 answer:
alisha [4.7K]2 years ago
4 0
Test A is the answer
You might be interested in
Felicity needs to buy 3 dozen cookies for a party. The first 16 cookies cost $0.28 each. The rest cost $0.19.
VLD [36.1K]

Answer: $8.28

Step-by-step explanation: 3 dozens are 36 cookies. The first 16, $0.28 each will be $4.48. The rest will cost $0.19 each so $0.19 x 20 = $3.80

$4.48 + $3.80 =

3 0
3 years ago
Read 2 more answers
Factor the numerator of the function H(x) =(x^2-3x-4)/(X-4). What do you notice about the numerator and denominator of the funct
Gennadij [26K]

Answer:

(x-4)*(x+1)/x-4

x≠4

Step-by-step explanation:

5 0
3 years ago
What is solution of 8x-2y =1 and -4x+y = 3
Maksim231197 [3]

Answer: it has no solution

Step-by-step explanation:

8x - 2y = 1 ..................... equation 1

-4x + y = 3 ...................... equation 2

solving the system of linear equation by substitution method . From equation 2 , make y the subject of the formula.

y = 3 + 4x .......................... equation 3

substitute equation 3 into equation 1 .

8x - 2(3 + 4x ) = 1

8x - 6 - 8x = 1

8x- 8x - 6 = 1

-6 = 1

this means that the equation has no solution

6 0
3 years ago
Which expresion represents the perimeter of the rectangle above (3y-5), 2y
Sonbull [250]
(3y-5 + 2y)*2 = (5y-5)*2 = 10y-10
3 0
3 years ago
Read 2 more answers
Find the mean and median of these data: 2, 5, 13, 15, 19, 21.
Maru [420]

The Arithmetic Mean and Median of the given set of data ( 2, 5, 13, 15, 19, 21 ) are 12.5 and 14 respectively.

<h3>What is Arithmetic mean?</h3>

Arithmetic mean is simply the average of a given set numbers. It is determined by dividing the sum of a given set number by their number of appearance.

Mean = Sum total of the number ÷ n

Where n is number of numbers

Median is the middle number in the data set.

Given the sets;

  • 2, 5, 13, 15, 19, 21
  • n = 6

Mean = Sum total of the number ÷ n

Mean = (2 + 5 + 13 + 15 + 19 + 21) ÷ 6

Mean = 75 ÷ 6

Mean = 12.5

Median is the middle number in the data set.

Median = ( 13 + 15 ) ÷ 2

Median = 14

Therefore, the Arithmetic Mean and Median of the given set of data ( 2, 5, 13, 15, 19, 21 ) are 12.5 and 14 respectively.

Learn more about arithmetic mean here: brainly.com/question/13000783

#SPJ1

3 0
2 years ago
Other questions:
  • Which is true of a line?
    7·2 answers
  • What is 16 divided by -18
    15·1 answer
  • The Pumpkin Patch is open every day. If it sells 2,750 pounds of pumpkins each day, about how many pounds does it sell in 7 days
    11·2 answers
  • The radius of a 10 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.1 inch. What is the
    11·1 answer
  • What percent of 72 is 27?
    12·2 answers
  • A shuttle suit, designed to let astronauts walk on the moon's surface, has a force of gravity of 228.2 N. What is the force in p
    13·1 answer
  • What is the first consecutive even integer that follows -12?
    5·1 answer
  • Ray QM is the angle bisector of angle NQR. If angle PQN = 7x + 15 and angle NQM = 4x, what is the value of x?
    11·1 answer
  • Which best explains why the orthocenter of an obtuse triangle is outside the triangle?
    12·2 answers
  • Please help me i beg.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!