Answer:
x = 1
Step-by-step explanation:
1 + x = 2
Subtract 1 form both sides,
1 + x - 1 = 2 - 1
x = 1
Assume that you have a sample of n1=9, with the sample mean X1=46, and a sample standard deviation of S1=4, and you have an independent sample of n2=12 from another population with a sample mean of X2=31 and the sample standard deviation S2=5. Complete parts (a) through (d) below. a. What is the value of the pooled-variance tSTAT test statistic for testing H0: μ1=μ2? tSTAT=nothing (Round to two decimal places as needed.) b. In finding the critical value, how many degrees of freedom are there? nothing degrees of freedom (Simplify your answer.) c. Using a significance level of α=0.1, what is the critical value for a one-tail test of the hypothesis H0: μ1≤ μ2 against the alternative H1: μ1>μ2? The critical value is nothing. (Round to two decimal places as needed.) d. What is your statistical decision? A. Reject H0 because the computed tSTAT test statistic is greater than the upper-tail critical value. B. Reject H0 because the computed tSTAT test statistic is less than the upper-tail critical value. C. Do not reject H0 because the computed tSTAT test statistic is less than the upper-tail critical value. D. Do not reject H0 because the computed tSTAT test statistic is greater than the upper-tail critical value.
Answer:
a. t`= 7.63
b.υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1
= 18.885 ≈19 The degrees of freedom is always rounded in this calculation.
c. The critical region for one tailed test for alpha= 0.1 and 19 degrees of freedom is 1.328= 1.33
The critical region is ║t║` ≥ t 0.05,19 = 1.729= 1.73
A. Reject H0 because the computed tSTAT test statistic is greater than the upper-tail critical value
Step-by-step explanation:
Answer:
Step-by-step explanation:
We state our null and alternative hypothesis as
H0: μ1=μ2 against Ha: μ1 ≠ μ2
The level of significance is α=0.1
Since the population have unequal variances , the test statistic if H0 is true ,is
t`= x1`- x2`/ √s₁²/n1 + s₂²/n2
which has approximately a t- distribution with υ degrees of freedom where
υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1
Computations:
t`= x1`- x2`/ √s₁²/n1 + s₂²/n2
t`= 46-31/ √4²/9 + 5²/12
t`= 15/√16/9 +25/12
t`= 15/ √64+75/36
t`=15/1.9649
t`=7.6339
t`= 7.63
υ = [s₁²/n1 + s₂²/n2]²/ (s₁²/n1 )²/ n1-1 + (s₂²/n2)²/n2-1
= [139/36]²/ (16/9)²/8 +(25/12)²/11
= 14.91/ 0.395 + 0.395
= 18.885
≈19 The degrees of freedom is always rounded in this calculation.
The critical region is ║t`║≥ t 0.05,19 = 1.729
Since the calculated value of t` falls in the critical region we reject our null hypothesis of equal means.
Solve for
m
.
−
5
m
=
−
35
m =
Answer: 7
Step-by-step explanation: -35 / -5 = 7
Answer:
The answer is 7. I did the lesson and 7 was the correct answer
Step-by-step explanation:
Pleaseeee help meee.
Answer:
Step-by-step explanation:
13. Match it with 54
14. Match it with 576
15. Match it with 70
16. Match it with 6
Hope this helps
(Also, do you want how the answers came up? If so please comment below this and tell me that. I would be more than happy to write the equations if you want.)
y=3x-5
6x+3y=15
what is the value of y in the following system
y=3x - 5....(i)
6x+3y=15.....(ii)
Then,
Keeping value of y in (ii)equation;
or,6x+3(3x-5)=15
or,6x+9x-15=15
or,15x=15+15
or,x=30/15
:x=2
Now, Keeping value of x in (i) equation;
y= 3x-5
or, y= 3×2 - 5
or,y= 6-5
: y=1
#3) A skier is at the top of his hill ready to ski down. The skier is now located at
(16,30) at the top of his hill and the bottom of the hill is located at (4,2). What is
the slope of the hill? (You must reduce fractions)
3/7
3/2
7/3
-7
40 points i will crown. A, B, C, or D.
Answer:
C. x > -3
Explanation:
The circle with no filling means it can not be equal
It goes ahead of -3 so it is greater than -3
A relation that is symmetric with respect to the x-axis CANNOT be a function,
Please select the best answer from the choices provided
O T
O F
Answer:
TRUE!!!
Step-by-step explanation:
The product of three positive integers is 300. If one of them is 5, what is the
least possible value of the sum of the other two?
Answer and Step-by-step explanation:
So, we are told that 3 positive integers multiply to be 300, and that one of the integers is 5.
First, we divide 300 by 5.
The result is 60.
Now, we take different (reasonable) numbers that add to 16:
10 and 6
12 and 4
We can see here that 10 and 6 are the integers because they add up to 16 and multiplies to 60.
#teamtrees #WAP (Water And Plant)
What is the limit of [(x+2) /(x+1)] ^x as x approaches to infinity?
first thing we need to do is factorise because we can't calculate infinity/infinity
and we are left with 1^infinity this is an euler function
an euler function looks like this
Jaxon is deciding between two landscaping companies for his place of business. Company A charges $45 per hour and a $150 equipment fee. Company B charges $35 per hour and a $200 equipment fee. Let
A
A represent the amount Company A would charge for
t
t hours of landscaping, and let
B
B represent the amount Company B would charge for
t
t hours of landscaping. Write an equation for each situation, in terms of
t
,
t, and determine the interval of hours,
t
,
t, for which Company A is cheaper than Company B.
Answer
10 hours
Explanation
Step one:
given information
Company A
charges $45 per hour and a $150 equipment fee.
Let A represent the amount Company A would charge for t hours
So, the expression for the total is
A= 45t+150--------------------1
Company B
charges $35 per hour and a $200 equipment fee.
Let B represent the amount Company B would charge for t hours
So, the expression for the total is
B= 35t+200--------------------2
Step two:
equating the two equations above
A=B
45t+150=35t+200
collect like terms
45t-35t= 200-150
5t=50
divide both sides by 5
t=50/5
t=10
Luis deposited $500 into his savings account with a simple interest rate of 3%. He wants to keep his deposit in the bank until he earns $120 in interest. For how many years does Luis need to keep his deposit in the bank?
Answer:
Blac cack
Step-by-step explanation:
Students collect $24 for every 10 tickets sold. Suppose m is the amount of money the students collect for selling r raffle tickets. Write an equation that reflects the relationship between m and r
the answer is m=2.4r. I HOPE THIS HELPS YOU OUT
round each decimal to nearest whole number
23.18
The number of adult Americans from a random sample of n adults who support a bill proposing to extend daylight savings time is a binomial random variable. Assume that its probability will be approximated using the normal distribution. Describe the area under the normal curve that will be computed in order to determine the probability that more than 368 Americans support the bill.
Answer:
Right of X = 368.5
Step-by-step explanation:
By using the normal approximation to the Binomial random variable, we normally make use of continuity correction.
Using the rule of continuity;
P(X > K) turn out to be P(X > K + 0.5)
To determine the required probability:
∴
P(X > K) turn out to be P(X > K + 0.5)
P(X > 635) turn out to be P(X > 368 + 0.5)
⇒ P(X > 368.5) to the right.
Right of X = 368.5
4x + 6y = 16
x = –8
Solve for x, y
I think the answer is yes=8
I have 86 chocolate chip cookies and 42 sugar cookies what is the greatest number of identical packages that I can make
Assuming there can only be 2 cookies per identical package, She can make 42 identical packages which contains 2 chocolate chip cookies and 1 sugar cookie.
86 / 2 = 43 chocolate chips cookies
42 / 1 = 42 sugar cookies
With the sugar cookies not having the capability to match the requirements we will assume for this answer that an "Identical Package" is composed of 2 chocolate chip cookies, and a single sugar cookie.
100000+7e7e73t6r6r67r2w6r
Answer:
5.1
Step-by-step explanation:
hope this helps
(2x + y = 14
5x - y = 28
Which ordered pair represents the solution
Answer:
D (6,2)
Step-by-step explanation:
2x6+2=14 2x6= 12 12+2= 14
5x6-2=28 5x6=30 30-2=28
Gabriel has 8 coins, all of which are quarters and pennies. In all, they're worth 56¢. How many of each kind of coin does Gabriel have?
Answer:
2 quarters and 6 pennies
Step-by-step explanation:
Quarters are worth 25 cents, pennies are worth 1 cent.
25(2) + 6(1) = 56 cents
Marita always listen to her favourite radio station when she drives her car
Everymoarning she listen to her radio
The grocery store sells orange juice in glass or plastic bottles. The glass bottles hold 5 liters of orange juice and the plastic bottles hold 1 liter of orange juice. Harper bought 46 liters of orange juice. The juice came in 14 bottles. How many of each type of bottle did she buy?
Please help me fast!!
Answer:
(8 glass bottles and 6 plastic bottles)
Step-by-step explanation:
(8 glass bottles = 40 liters) +(6 plastic bottles = 6 liter) = 46 liters of orange juice
8 bottles plus 6 bottles equals 14 bottles
all criteria is fulfilled.
a. What is the decimal for 1 trillionth of a second?
Answer:
Step-by-step explanation:
1 000 000 000 000 E12
Answer:
Step-by-step explanation:
0.000 000 000 001
Plase help me it would mean a lot
Answer:
Drink A
Step-by-step explanation:
Let's find the amount of sugar in each drink in every 35 ounces. (since 35 is the lowest common multiple of 5 and 7)
Drink A
5 fluid ounces --- 11g of sugar
35 fluid ounces --- 11 ×7= 77g of sugar
Drink B
7 fluid ounces --- 10g of sugar
35 fluid ounces --- 10 ×5= 50g of sugar
Since drink A has more sugar in every 35 ounces than drink B, drink A is sweeter.
ILL GIVE BRAINLEST HELP SOLVE THE GRAPH
What is the inverse operation that will isolate the variable X-4=-2
A)division
B)multiplication
C)subtraction
D) addition
Which of the following is the correct answer after multiplying both sides of the inequality -x > -3 by -1?
x 3
x > -3
x < -3
Answer:
x < 3
Step-by-step explanation:
When you multipy an inequality by a negative, remember to switch the inequality sign!
-x > -3
(-x)(-1) > (-3)(-1)
x < 3
please give thanks and hit the heart button :)
Step-by-step explanation:
x<3
ph0t0math/máthwáy
For an acute angle θ, the equation sin(θ)=cos(6) is true. What is the value of θ? Show or explain your answer
Answer:
(θ) = 84°
Step-by-step explanation:
Given:
sin(θ)=cos(6)
Find:
value of θ
Computation:
sin(θ)=cos(6)
We know that
cos(90-a) = sin(a)
So,
sin(θ)=cos(90-84)
sin(θ)=sin(84)
So,
(θ) = 84°
The value of (θ) = 84°
Given that,
The equation is sin(θ)=cos(6)Based on the above information, the calculation is as follows:
sin(θ)=cos(6)
We know that
cos(90-a) = sin(a)
So,
sin(θ)=cos(90-84)
sin(θ)=sin(84)
So,
(θ) = 84°
Learn more: https://brainly.com/question/6789603?referrer=searchResults
Please help build a graph
The temperature of a pot of water is 62 °F.
The temperature increases by 20 °F per
minute when being heated.
Write an equation to represent the linear
relationship.
A. y = 62x + 20 C. y = 62 + 20
B. y = 20x + 62 D. y = (62 + 20)x
Answer:
i say B
Step-by-step explanation:
the pot is 62 which means that 20 would be x due to it increasing 20 degrees per minute
What is the slope of the ling in the graph?
Answer:
1
Step-by-step explanation:
Start at any point on the line. Go up 1 and right 1. Now you are on another point on the graph. That is rise = 1 and run = 1.
Slope = rise/run = 1/1 = 1
Answer: 1