Answer:
Kindly check explanation
Step-by-step explanation:
Given the following :
Group 1:
μ1 = 59.7
s1 = 2.8
n1 = sample size = 12
Group 2:
μ2 = 64.7
s2 = 8.3
n2 = sample size = 15
α = 0.1
Assume normal distribution and equ sample variance
A.)
Null and alternative hypothesis
Null : μ1 = μ2
Alternative : μ1 < μ2
B.)
USing the t test
Test statistic :
t = (m1 - m2) / S(√1/n1 + 1/n2)
S = √(((n1 - 1)s²1 + (n2 - 1)s²2) / (n1 + n2 - 2))
S = √(((12 - 1)2.8^2 + (15 - 1)8.3^2) / (12 + 15 - 2))
S = 6.4829005
t = (59.7 - 64.7) / 6.4829005(√1/12 + 1/15)
t = - 5 / 2.5108165
tstat = −1.991384
Decision rule :
If tstat < - tα, (n1+n2-2) ; reject the Null
tstat < t0.1,25
From t table :
-t0.1, 25 = - 1.3163
tstat = - 1.9913
-1.9913 < - 1.3163 ; Hence reject the Null
help! for 22 points
Answer:for a is (x,y) = (1, -5)
B is (x,y) ∈∅
And lastly is c is (x, y) = ( x , 1 - 7x), x∈
Step-by-step explanation:
for a is (x,y) = (1, -5)
B is (x,y) ∈∅
And lastly is c is (x, y) = ( x , 1 - 7x), x∈
Ken and Vincent each want to run for president of their school's student body council. In
order to do so, they must collect a certain number of signatures and get a nomination. So far,
Ken has 10 signatures, and Vincent has 30. Ken is collecting signatures at an average rate of
3 per day, whereas Vincent is averaging 2 signatures every day. Assuming that their rate of
collection stays the same, eventually the two will have collected the same number of
signatures. How long will that take?
00
Write a system of equations, graph them, and type the solution.
Sn
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
g(f(x)) easy hw question
Answer:
b
Step-by-step explanation:
-2x⁴-x³+2x²-6
hope this helps
A fudge company makes 4 pounds of fudge. A worker separates the fudge into packages of ¼ of a pound of fudge each. How many packages does he make?
A 1/16
B 1
C 8
D 16
Answer:
16
Step-by-step explanation:
we are dividing based on the word separate.
4 divided by 1/4 is 16/1 which is 16.
so the worker made 16 packages
Please inform me if there are any questions:)
The number of fudge will be 16. The correct option is D.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that a fudge company makes 4 pounds of fudge. A worker separates the fudge into packages of ¼ of a pound of fudge each.
We are dividing based on the word separate.
4 divided by 1/4 is 16/1 which is 16.
Number = 4 / ( 1 / 4 )
Number = 16
The worker made 16 packages.
To know more about an expression follow
https://brainly.com/question/15978558
#SPJ2
Anybody Know This. ?
Think about the proportion and the cross products for this problem:
Shelley sold one customer 5 peanut butter biscuits for $3. She sold another customer 7 beef treats for $4.20.
Answer:
The ratios are equivalent
The ratios are a proportion
3. Evaluate the expression 18
7+2 - 4
a. 2
b. 1.4
c. 6
d. 18
What did Physics say to History when they are arguing?
Answer:
Hey!
Here's your answer!!
➡️Don't change the subject⬅️
Why do they even exist!?
Gotta study those experiments which we never perform and those people who are long gone xD
Evaluate the following expression.
50÷ 5^2×2
Find 6/11/-3. Write in simplest form
Answer:
Bit confusing but I'll try my best.
Step-by-step explanation:
6/11 diving by -3.
-2/11.
The graph of a line passes through the two points (-2,1) and (2,1). What is the equation of the line written in general form ?
A. y-1=0
B. x-y+=0
C. x+y -1=0
Answer:
A
Step-by-step explanation:
When you plot the points (-2,1) and (2,1) on a graph, you get a horizontal lines that crosses through y=1 which can be rearranged to be written as y-1=0
you have three 1 dollar bills and 2 10 dollar bills in your wallet. you select a bill at random
Answer:
you are more likely to get a 10 dollar bill
Step-by-step explanation:
f(x) = x² + x; f(1)??
The graph shows the balance of an account that is earning interest over time. In which year was the account balance about $150?
Answer:
Year 7
Step-by-step explanation:
Hopefully this is helpful.
Answer:
ik im late and the other person was right but theres proof for the newcomers :)
Step-by-step explanation:
Find the value of 0.4 ´ 0.023
Answer:
45-0.023=44.977
Step-by-step explanation:
The marching band walks mile in 2.5 minutes. At this rate, how many minutes will it take to complete 1 mile? Record your answer below.
Answer:
2.5 minutes
Step-by-step explanation:
The answer is given in the word problem.
Can someone please help me?
Answer:
232.05
Step-by-step explanation:
find out how much it started out with
so divide 46dollars and 50 cents by 3
then you'll have 15dollars and 5 cents
now you know thats how much earned at first you multiply by 15 and you get the answer above
good luck
What relations, if any, are functions? Select all that apply.
ayooooo the functions: a and d.
Find the probability that a person is audited more than twice. (Round your answer to four decimal places.)
Complete Question
The chance of an IRS audit for a tax return with over $25,000 in income is about 2% per year. We are interested in the expected number of audits a person with that income has in a 9-year period. Assume each year is independent.
Find the probability that a person is audited more than twice. (Round your answer to four decimal places.)
Answer:
The probability is [tex]P(X > 2) = 0.0007 [/tex]
Step-by-step explanation:
From the question we are told that
The probability of an IRS audit for a tax return with over $25,000 in income is p= 0.02
The sample size n = 9
Generally the distribution of IRS audit for a tax return follows a binomial distribution
i.e
[tex]X \~ \ \ \ B(n , p)[/tex]
and the probability distribution function for binomial distribution is
[tex]P(X = x) = ^{n}C_x * p^x * (1- p)^{n-x}[/tex]
Here C stands for combination hence we are going to be making use of the combination function in our calculators
Generally the probability that a person is not audited at all is mathematically
[tex]P(X = 0) = ^{9}C_0 * (0.02)^0 * (1- 0.02 )^{9-0}[/tex]
[tex]P(X = 0) = ^{9}C_0 * (0.02)^0 * (0.98 )^{9-0}[/tex]
[tex]P(X = 0) = 0.8337[/tex]
Generally the probability that a person is audited once is mathematically
[tex]P(X = 1) = ^{9}C_1 * (0.02)^1 * (1- 0.02 )^{9-1}[/tex]
[tex]P(X = 1) = 9* (0.02)^1 * (0.98 )^{8}[/tex]
[tex]P(X = 1) = 0.1531[/tex]
Generally the probability that a person is audited twice is mathematically represented
[tex]P(X = 2) = ^{9}C_2 * (0.02)^2 * (1- 0.02 )^{9-2}[/tex]
[tex]P(X = 2) = 36 * (0.02)^2 * (0.98 )^{7}[/tex]
[tex]P(X = 2) = 0.0125 [/tex]
Generally the probability that a person is audited more than twice is mathematically represented
[tex]P(X > 2) = 1 - [P(X = 0 ) + P(X = 1 )+ P(X =2)] [/tex]
=> [tex]P(X > 2) = 1 - [0.8337 + 0.1531+0.0125 ] [/tex]
=> [tex]P(X > 2) = 0.0007 [/tex]
Help ? anybody ion know any of these I’m sorry please give me the correct answer .
1. Which inequality represents the following statement? Two times the quantity x plus 4 is greater than 10.
a.2x + 4 > 10
b.2(x + 4) > 10
c.x+4 > 10
d.2(x + 4) = 10
NEED HELP FAST I WILL MARK BRAINLYEST
Answer:
13/48
Step-by-step explanation:
13/6 / 8 = 13/6 x 1/8
13 x 1 = 13
6 x 8 = 48
13/48
Answer:
13/48
Step-by-step explanation
2(4x − 3) = 5x − 3(x − 4)
Answer: x=3
Step-by-step explanation:
find the length of x
slove the equation
7h-5(3h-8)=-72
Answer:
Step-by-step explanation:
You can break it down into steps if you'd like.
-5 ( 3h - 8) = -15h + 40
So,
7h - 5 ( 3h -8 ) = -72
7h - 15h + 40 = -72
Now you can combine the like terms
-8h + 40 = -72
Add 8h to both sides
40 = -72 + 8h
Add 72 to both sides
40 + 72 = 8h
112 = 8h
Divide both sides by 8 to find h.
h = 112/8 = 14
hellllllllllllllllllp
Answer:
Step-by-step explanation:
Its b
Answer:
D
Step-by-step explanation: common sence because when it 5 and the little 2
would be 5 times 5 BUT 5 and the little 4 would be 5 times 5 times 5 times 5 so which if you add those u get 5 times etc u get the point
Find value of x, first gets brain
Answer:
53
Step-by-step explanation:
write an equation to solve for x what is the value of x will mark brainious this is very confusing for me
Answer:
equation: 3x - 2 + 4x - 9 + 3x - 9 = 180x = 20Step-by-step explanation:
add all internal angles
∠H + ∠I + ∠J = 180
where:
∠H = 3x - 2
∠I = 4x - 9
∠J = 3x - 9
plugin the values into the ∠H + ∠I + ∠J = 180 formula:
equation: 3x - 2 + 4x - 9 + 3x - 9 = 180
combine similar terms: 3x + 3x + 4x = 180 + 2 + 9 + 9
simplify: 10x = 200
divide 10 both sides: x = 20
10 pol
Mariska draws a red card and then a black card. The sum is positive. The
number on the black card must be greater than the number on the red
card. *
True
False
False, The sum is positive, no subtraction is being done and no negatives are present.
A positive plus a positive is another positive.
HDHSJSJSDVSV HELP ME
Answer:
let me see the drop box options !! it helps alot!