Answer:
t= 64.2-63 / 2.9/ sqrt 40
Step-by-step explanation:
Got it right on AP Classroom
There is a 0.18 probability of obtaining a sample mean height of exactly 64.2 inches from a population whose mean height is 63.7 inches.
What is the null hypothesis?The null hypothesis in inferential statistics states that two possibilities are identical. The null hypothesis states that the observed difference is purely random. It is feasible to calculate the probability that the null hypothesis is correct using statistical testing.
1. C) H0: u = 63.7 in. versus H1: u > 63.7 in.
the null hypothesis state that over the years the mean height is 63.7in. the alternative hypothesis will be if the mean height is greater than 63.7
2. z = (variate - mean)/ (standard deviation/
Z = (64.2 - 63.7)/ (20/roots 45) =0.17
meaning there is
B. There is a 0.18 probability of obtaining a sample mean height of exactly 64.2 inches from a population whose mean height is 63.7 inches.
3. if the level of significance is 0.05 or between 0.05 and 0.01, i.e. the confidence level is 95% or between 95% and 99%, the results are considered to be probably significant, i.e. the results are probably correct,
Therefore, the alternative hypothesis is correct
To know more about the Null hypothesis follow
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Aubrey was buying candy for goodie bags for her birthday party. She bought 6 pounds of Jelly beans. How much did she spend on Jelly Beans? (please don´t guess)
Answer:
$8.35
Step-by-step explanation:
6 pounds is $8.35
A company sells an insurance policy against losses incurred during travel for $15. 40,000 customers buy the insurance policy. The policy pays the full amount claimed up till $5,000. Most policy holders claim nothing, the rest either $500 or $5,000. Each customer has the following probabilities of claiming a certain amount for damages, independent of the other customers.
Claim $0 $500 $5,000
Probability 99% 0.8% 0.2%
Estimate the probability that the company makes a positive net profit across the 40,000 contracts.
Which data set has a median of 15?
18, 9, 19, 16, 6, 20.13
09, 17, 13, 15, 16, 8, 12
18, 15, 11, 14, 19, 15, 6
O 7, 16, 14, 16, 11, 7, 17
Help please.
Median is the middle value.
Each set has 7 numbers so put the numbers in order from smallest to largest. The median would be the 4th number in the sets.
Only 2 sets have the number 15 in them so those are the only two you need to look at.
The 3rd choice is the correct answer.
PRETTY PLEASE HELP!! ILL GIVE BRAINLIEST! it’s due tonight :(
Answer:
a = 8 m
Step-by-step explanation:
Since, given is an isosceles right triangle.
So, by Pythagoras theorem:
[tex] {a}^{2} + {a}^{2} = {(8 \sqrt{2} )}^{2} \\ \\ 2 {a}^{2} = 128 \\ \\ {a}^{2} = \frac{128}{2} \\ \\ {a}^{2} = 64 \\ \\ a = \sqrt{64} \\ \\ a = 8 \: m[/tex]
I need help please help
Answer:
137
Step-by-step explanation:
- >
2X 14
2x 6 x 6 > 14
14 - 6
-2
- 2x o 7 8
X - 4
0 4)
3(244) + 1) 2 (2y 3) 8
Answer:
no te entiendo, puedes escribir la pregunta completa
Can someone help me? I’ll reward points + brainalist
Answer:
d) A = π([tex]9^{2}[/tex])
Step-by-step explanation:
area = π [tex]r^{2}[/tex]
diameter = 18
radius (half of diameter) = 9
area = π [tex]9^{2}[/tex]
The lengths of the sides of a triangle are 12,6 V3 and 6. Classify this triangle,
A)
right, scalene triangle
B)
acute, scalene triangle
o
obtuse, scalene triangle
D)
right, isosceles triangle
Answer:
right,scalene triangle
Solve k-73 0.Graph the solution
The solution is
Select the lesser of the two given numbers.
16, 1-19
Henry wrote 4z2 - 22 as
4. Are 4z2 – 22 and 4 equivalent expressions?
Explain.
Find the 12" term of the arithmetic sequence whose common difference is d=8 and whose first term is a = -2.
Can someone please help me?
Answer:
86.
Step-by-step explanation:
nth term = a1 + d(n - 1) so here we have:
12the term = -2 + 8( 12 - 1)
= -2 + 88
= 86.
a family of seven people needs 45 Kg rice for a week how much rice does the family need for a month
Answer:
there are 4 weeks in a month so if 45 kg is for 1 week then
Step-by-step explanation:
x=4 (weeks in a month)
=45x
=180 kg of rice
In a class of 6, there are 2 students who forgot their lunch.
If the teacher chooses 2 students, what is the probability that both of them forgot their lunch?
Answer:
1/8
Step-by-step explanation:
AB,AA,BB,BB,BB,BB,BB,BB,
*A IS THE students that forgot thier lunch
pleaseeeee help me!!!!! i’ll appreciate it so much!
Answer:
Step-by-step explanation:
∠Y = ∠P, so AY = AP
Perimeter = AY + AP + 13 = 43
AY + AP = 30
∠Y = ∠P, so AY = AP
AP = 30/2 = 15
The sum of 666 consecutive integers is 393393393.
What is the third number in this sequence?
Answer:3
Step-by-step explanation:
When it comes to reimbursement packages, company A offers $175 plus
$0.55 per mile. Company B offers $200 plus $0.45 per mile. What number of
miles driven would make the two reimbursement packages equal?
O A. 225
B. 245
O c. 250
O D. 305
can you share 1 one with 6 groups
Answer:
it all comes down to what it is! if it's like big bag, and how big the groups are, then you would have to estimate! if it's like a single pack on candy then no
Write an equation when Angle A and Angle B are vertical angles
Answer:
X + Y = 180°
Step-by-step explanation:
We know that vertical opposite angles are equal
So,
Angle A = Angle B
So,
Assume;
Angle A = x
So,
Angle A + Y = 180°
So,
X + Y = 180°
Question 5 (5 points)
(06.02 LC)
A scatter plot is shown:
Which graph best represents the line of best fit for this scatter plot?
Answer:
um i cant see the answer choices
Step-by-step explanation:
Answer:
it is not clear
Step-by-step explanation:
it is not clear
Find the mean, median, mode, and range of these numbers 75,95,90,95,60,95,75,95,90
Answer:
Mean=85.56, median=90, mode=95 and range=35
Step-by-step explanation:
To calculate the mean is the same as the average value in a data set. Median is data value separating the upper half of a data set from the lower half. The median is the data value separating the upper half of a data set from the lower half. The range is the difference between the highest and lowest values in a set of numbers. To find it, subtract the lowest number from the largest number.
Work out the area of a rectangle with base, b = 20mm and perimeter, P = 60mm.
b
The diagram is not drawn to scale.
base+perimeter
20mm+60mm
=80mm
Select the correct answer from each drop-down menu.
If the radius of a circle is 3.5 Inches, Its diameter is
Inches and its approximate area is
square Inches.
Answer:
Diameter = 7 inches
Area = 38.48 in²
Step-by-step explanation:
Diameter = 3.5 x 2 = 7 inches
Area = 3.5² x π = 38.48 in²
PLEASE HELP 55 POINTS
Answer:
Blue square = x²
Orange square = 6x
Yellow square = 4x
White square = 24
20% of what number is 30
Answer:
150
Step-by-step explanation:
20 percent of 150 is 30.
To check the answer... 150 times 0.2 is 30.
Answer:
150
20 percent of what number equals 30; Answer: 150.
Step-by-step explanation:
20% of what is 30?
Written using the formula: X = 30 ÷ 20%
Convert the percent to a decimal.
20% ÷ 100 = 0.2.
X = 30 ÷ 0.2.
X = 150.
So 20% of 150 is 30.
The best fruit punch requires 2/5 cup of juice concrete to 3/7 cups of water. To maintain the same taste, how many cups of water should be used for every cup of juice concentrate?
a. 6/35
b. 14/15
c. 29/35
d. 15/14
Answer:
D) 15/14
Step-by-step explanation:
Divide 3/7 by 2/5
a rectangular prism with a volume of 10 cubic units is filled with cubes with side lenghts of 1/2 unit how many 1/2 unit cubes does it take to fill the prism
Answer:
Step-by-step explanation:
The volume of a cube is
V=s^3, we are told the volume is 10u^3 and that it will be filled with cubes having a side of 1/2 so
n(1/2)^3=10, where n will be the number of these small cubes
n(1/8)=10 upon multiplying each side by 8
n=80
So it will take 80 cubes of side length 1/2 to have a volume equal to 10u^3
An escalator lifts people to the second floor of a building, 21 ft above the first floor. The escalator rises at a 30° angle. To the nearest foot, how far does a person travel from the bottom to the top of the escalator?
Answer:
42
Step-by-step explanation:
Sin 30=21/H
H=21/sin 30
H= 42
The radius of the clock is 6.5 inches. What is the circumference?
A.
40.82 in
B.
132.67 in
C.
84.5 in
D.
20.41 in
Answer:
circumference=2πr=2×22/7×6.5=40.8571428571
option
A.
A.40.82 in
is your answer.
Step-by-step explanation:
the formula for the circumference of a circle for just the radius is
2r(pie)
so just insert 6.5 for r
2(6.5)(pie)
40.82
Hope that helps :)
PLEASEEEEEEEEEEEEEEEEEEEEE HELP MEEEEEEEEEEEEEEEEEEEEEEEEEE