Answers
Answer:
40
Step-by-step explanation:
Quadrilateral QRSU forms a euclidean kite this means PR would be 2(mST)
Related Questions
If I have 10 apples, 3 oranges and 7 pears how may oranges do i have?
Answers
Answer:
20 oranges.
Step-by-step explanation:
If you add 10 and 3 that gives you 13,
now add the 7 and that should give you 20.
A phone company plans on offering their new smartphone in four colours: white, black, silver and rose gold. They anticipate that 30% of shoppers will prefer white, 35% will prefer black, 20% will prefer silver and 15% will prefer rose gold. They perform market research by asking a random sample of 350 potential customers which colour they prefer.
Color White Black Silve Rose Gold
Frequency 99 135 89 27
Can the company conclude that their expected distribution was accurate using a 10% level of significance?
a. Calculate the test statistic.
b. Determine the critical value(s) for the hypothesis test.
c. Conclude whether to reject the null hypothesis or not based on the test
Answers
a)
The test statistics is χ² = 8.31
b)
The critical value is 6.251.
c)
We reject the null hypothesis that the expected distribution is accurate.
What is hypothesis testing?Hypothesis testing is a statistical method that is used to make decisions about a population based on a sample of data.
It involves testing a null hypothesis (H0) against an alternative hypothesis (Ha) using statistical techniques.
We have,
a.
To test whether the expected distribution was accurate, we need to perform a chi-square goodness-of-fit test.
The null hypothesis is that the expected distribution is accurate, and the alternative hypothesis is that it is not accurate.
The expected frequencies are:
Color:
White Black Silver Rose Gold
105 122.5 70 52.5
i.e
Expected Freq:
0.3 x 350 = 105
0.35 x 350 = 122.5
0.2 x 350 = 70
0.15 x 350 = 52.5
Using the formula for the chi-square goodness-of-fit test statistic:
χ² = ∑ (Observed Frequency - Expected Frequency)² / Expected Frequency
χ² = [(99-105)²/105] + [(135-122.5)²/122.5] + [(89-70)²/70] + [(27-52.5)²/52.5]
χ² = 8.31
b.
The critical value for the chi-square test with 3 degrees of freedom (4 categories - 1) and a significance level of 0.10 is 6.251.
c.
Since the calculated test statistic (8.31) is greater than the critical value (6.251), we reject the null hypothesis that the expected distribution is accurate.
Therefore, the company cannot conclude that their expected distribution was accurate using a 10% level of significance.
Thus,
a)
The test statistics is χ² = 8.31
b)
The critical value is 6.251.
c)
We reject the null hypothesis that the expected distribution is accurate.
Learn more about hypothesis testing here:
https://brainly.com/question/30588452
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PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEE HELP ME. IF I PASS THIS I GET TO GO TO DISNEY WORLD.
Answers
Answer:
I think it would be C
Step-by-step explanation:
If they are similar and the second triangle is half of the other one, then the answer is C!
Answer: C
Can someone help having trouble solving this question
Answers
Answer:
114
Step-by-step explanation:
to get the degrees of hexagon u should know first the greatest degree so you can subtract the others from it and how to get that
by this formula (no of sides-2)*180
(6-2)*180=720
so 138+128+120+160+90=606
and the remaining angle should be 720-606
which is 114
Which graph represents a function?
Answers
Answer:
the bottom graph in the first photo
Step-by-step explanation:
it is a function, unlike the others, because that graph is the only one where the x values dont repeat. in order for it to be a function, the x values cannot repeat
please someone help me, ill give brainiest pls just help me its my last question on math:
Which comparison is correct?
1 2 3 or 4
1. 7 < 3
2. -2 > -7
3. -9 > 4
4. -6 > -5
Answers
Answer:
2. -2> -7 ...............
ryan climbed 100 steps in 50 seconds. How many steps did he climbed per second? Step by step. Show the full procedure.
Answers
9 +10 =
please help
I will give brainliest and 5 star and 10 points for the best answer
Answers
Answer:
910
Step-by-step explanation:
just remove the plus sign (+) to get your answer :)
Which equation represents 7/3 ? Select all that apply.
Answers
If $6,000 is invested for 5 years with a 3.5% yearly interest rate, what is the amount of simple interest earned?
Answers
Answer:
1,050
Step-by-step explanation:
Simple Interest = Principle×Rate×Time/100
=6,000×5×3.5/100
=1,050
what is the volume of this composite solid
Answers
Answer:
C
Step-by-step explanation:
198 cubic meters
Estimate the diameter of a circle with a circumference of 80 ft. Use 3.14 for pi
Answers
Round your answer to the nearest hundredth if necessary. Estimate the diameter of a circle with a circumference of 80 feet.
How many 1/5s are in 1?
Answers
Answer:
5!
Step-by-step explanation:
On a coordinate plane, triangles A B C and D E F are shown. Triangle A B C has points (negative 10, negative 10), (negative 10, negative 4), and (4, negative 10). Triangle D E F has points (0, 8), (12, 4), and (5, 0). Which statement is true of the right triangles ABC and DEF? Area of ABC is greater than area of DEF. Area of ABC is less than area of DEF. Area of ABC is equal to the area of DEF. There is not enough information to compare the areas of triangles ABC and DEF.
Answers
Answer:
Area of ABC is greater than area of DEF
Step-by-step explanation:
Answer:
A. Area of ABC is greater than area of DEF.
I NEED HELP ASAP!!! PLEASE HELP!!!
Answers
Answer:
from B we get y = -2x + 2
part c: slope, m =-2 and b=2
Step-by-step explanation:
If each person uses 70 gallons of water per day, how many gallons will 57 people use in a day?
Answers
3990
Step-by-step explanation:
57*70=3990
URGENT
Solve each triangle. Show work.
Answers
Answer:
Multiply the 27 yd × 30 yd then after the other one do the same thing but after All divide it by 17
With a measurement question built on a multiple rating list scale, ____. participants rate multiple items on a three-point scale the participant is restricted to circling their rating. the data generated are always ordinal None of the above is correct. it is possible to visualize the results better than with other numerical scales.
Answers
Answer:
it is possible to visualize the results better than with other numerical scales
Step-by-step explanation:
A rating scale is been set up extract information concerning quantitative as well qualitative attribute.
A rating scale can be regarded as
method of data collection devices in collection of comparative information about as regards a specific research subject. It do comes in form of a multiple-choice question so that values could be assigned to a product by survey respondents. multiple rating list scale gives a better and broad results and give better chance in visualizing the gotten result compare with numerical scales( numerical scale are scales that gives quantitative symbolization as regards attribute).
It should be noted that With a measurement question built on a multiple rating list scale it is possible to visualize the results better than with other numerical scales
Write the expanded form for each expression.
2(i + 5j)
-0.4(h - 1)
i(8 + 2h-6)
Answers
Answer:
2i + 10j
-0.4h + 0.4
8i +2hi - 6i = 2i + 2hi
What is the distance between (1, -1) and (-2,3) ?
Answers
Answer:
the answer is 5
A. one solution
B. infinitely many solutions
C. no solution
Answers
Ms. Gittens went out to dinner and the total bill was $60. She wants to give the waiter a %20 tip. How much money should Ms. Gittens give the waiter for a tip?
Answers
Answer:
$12
Step-by-step explanation:
20% of 60 = 12
Answer:
12 .....20% of 60 is = 12
Step-by-step explanation:
Let h(x)=|2x|-4. Find h(x) when x = -7.
a)-10
b) 10
c) -13
d) 13
Plzzz
Answers
Can you please help me
Answers
9514 1404 393
Answer:
volume: 200 cm³surface area: 220 cm²Step-by-step explanation:
The usual formulas are useful for this.
V = LWH
V = (10 cm)(4 cm)(5 cm) = 200 cm³
The volume is 200 cubic centimeters.
__
SA = 2(LW +H(L +W))
SA = 2((10 cm)(4 cm) +(5 cm)(10 cm +4 cm)) = 2(40 +5(14)) cm² = 220 cm²
The surface area is 220 square centimeters.
3
1
+a=
4
5
mmmmmmmmmmmmmmmmmmmmmmmmm
Answers
i'm confused, can you tell me the question?
The ratio of green to white candles is 2:5. If there are 32 green candles, how many white candles are there?
Answers
Answer:
80?
Step-by-step explanation:
Answer:
80 white candles
Step-by-step explanation:
I use a way that makes it easy for me
2:5 means [tex]\frac{2}{5}[/tex]
so when you write [tex]\frac{2}{5} =[/tex][tex]\frac{32}{x}[/tex]
that means you do the cross multiplication method which makes the equation go that way:
[tex]2x=32*5[/tex]
so
[tex]2x=160\\x= 80[/tex]
Suppose a pack of candy bars has 4 bars. Each bar weighs 3.38 ounces. How much does the pack weigh?
Answers
Answer:
13.52 ounces I think...
Step-by-step explanation:
4x3.38 subtract the decimal and add it again...
If C is the incenter of ∆AMD, m∠A M C = 3 x + 6 and m∠ DMC= 8 x − 49.
find ∠ M A D (just numbers, no degrees signs).
Answers
Hope this will help you lot.
Answer:
<MAD=66
Step-by-step explanation:
to find x:
8x-49=3x+6
x=11
to find DMC:
8(11)-49
<DMC=39
<ADM=36
to find ADC:
36/2
<ADC=18
Evaluate the following expression.
3 to power of 1
Answers
Answer:
3
Step-by-step explanation:
it is 3 3x1 is 3
what is -2.14285714 rounded to the nearest whole
Answers
Answer:
-2
Step-by-step explanation: