Answers
Answer:
Step-by-step explanation:
Related Questions
A lumber company is making boards that are 2638.0 millimeters tall. If the boards are too long they must be trimmed, and if the boards are too short they cannot be used. A sample of 18 is made, and it is found that they have a mean of 2636.5 millimeters with a standard deviation of 12.0. A level of significance of 0.05 will be used to determine if the boards are either too long or too short. Assume the population distribution is approximately normal. Is there sufficient evidence to support the claim that the boards are either too long or too short
Answers
Answer:
The answer is "Fail to reject [tex]H_o[/tex], because [tex]w_o[/tex] is sufficient evidence for claim".
Step-by-step explanation:
[tex]H_0 \mu=2638.0 \ \ / \ \ H_a \mu \neq 2638.0 \\\\\mu < 2638.0 \ \ or \ \ \mu > 2638.0 \\\\\alpha =0.05 \ \ level \ \ at \ \ sufficient \\\\[/tex]
Test Statistic:
[tex]t =\frac{\bar{x}- \mu}{\frac{S}{\sqrt{n}}}\\\\=\frac{2636.5- 2638.0}{\frac{12.0}{\sqrt{18}}}\\\\= -0.5303\\\\[/tex]
[tex]dt=17\\\\[/tex]
p-value[tex]=0.6028[/tex]
A car journey is in two stages Stage1 the car travels 110 miles in 2 hours Stage 2 the car travels 44 miles at the same average speed as stage 1 Work out the time for stage 2 Give you answer in minutes.
Answers
9514 1404 393
Answer:
48 minutes
Step-by-step explanation:
The average speed for stage 1 is ...
speed = distance/time = (110 mi)/(2 h) = 55 mi/h
Then the time for stage 2 is ...
time = distance/speed = (44 mi)/(55 mi/h) = (4/5 h)(60 min/h) = 48 min
The time for stage 2 is 48 minutes.
Answer:
Solution :-We know that
SpeeD = Distance/Time
Speed = 110/2
Speed = 55 mi/hr
For, 2
Speed = 44/55
Speed = 4/5
Speed = 48 min
[tex] \\ [/tex]
x = 12 - 3y
3x + 9y = 24
Answers
Answer:
Cool
Step-by-step explanation:
Thanks !!!
what is 91,360 in expanded form
Answers
Answer:
Expanded Notation Form:
91,360 =
90,000
+ 1,000
+ 300
+ 60
+ 0
Expanded Factors Form:
91,360 =
9 × 10,000
+ 1 × 1,000
+ 3 × 100
+ 6 × 10
+ 0 × 1
Expanded Exponential Form:
91,360 =
9 × 104
+ 1 × 103
+ 3 × 102
+ 6 × 101
+ 0 × 100
Word Form:
91,360 =
ninety-one thousand three hundred sixty
Hope this helps! mark me as brainliest if possible, you dont have too!
Step-by-step explanation:
Is the point (33,26) on the line of the equation y=1/3x+15? How do you know that it is or is not on the line?
Fast please this is a test
Answers
The area of the triangle below is 44.59 square centimeters. What is the length of the
base?
9.1 cm
Answers
Answer:
6 cm.
Explanation: 6
cm.
Explanation:
Since they've given use the area of the triangle, we can use the area formula to find the base of the triangle.
The formula to find the area of a triangle is:
a = 1 2 h b
→ ( h = height , b= base )
We know:
a = 24 h = 8
So we can substitute them in and find
Multiply by sides by 2 and then divide:
The base of the triangle is
6 cm. -step explanation:
The product of 2 and 1 and 1/2 is ______ 2.
Greater than
Equal to
Less than
No answer text provided.
no link plz
Answers
Answer:
It is Greater Than because 2 x 1.5 = 3
Paisley is going to invest $28,000 and leave it in an account for 14 years. Assuming the interest is compounded monthly, what interest rate, to the nearest tenth of a percent, would be required in order for Paisley to end up with $74,000?
Answers
Answer:
r=7
Step-by-step explanation:
74000=28000(1+r/12)^12(14)
divide 74000 by 28000, and cancel out 28000.
1.00580=1+r/12
(100) .06962=r
r = 6.96198
the 6 after the 9 rounds 9 to 0, which rounds the 6 to 7
r=7
Find the area of the regular polygon. Round to the nearest tenth.
Answers
Answer:
i dint know sorry
Step-by-step explanation:
PLEASE HELP 30 cm
30 cm
76 cm
Casa wames to put a layer of sand at the bottom of the tank. The sand layer is to be 3 cm deep. If the density of sand is 2.65 9 what mass of sand does Carla need to purchase? Round to the nearest gram.
cm
6810
18. 136
25.11
cm
6810
18. 136
25.11
Answers
The mass of Sand that Carla needs to purchase for the sand tank is gotten to be; 25811 g
What is the mass required?Formula for density is;
Density = mass/volume
From the box we are given, it's volume is;
Volume = 30 * 30 * 76
Volume = 68400 cm³
Now, from conversion;
1 cm³ = 1g. Thus;
68400 cm³ = 68400 g
Volume = Mass/density
Volume = 68400/2.65
Volume = 25811 g
Read more about mass required at; https://brainly.com/question/1762479
Solve the quadratic equation 2x2 = 5x + 9. <33 please besties
Answers
Answer:x=-1
Step-by-step explanation:
I’m stuck on this problem helpp
Answers
А Campus athletics is interested in the proportion of registered students living on campus who play basketball recreationally during the semester. They take a random sample of 198 registered students listed as living in campus housing and ask each whether or not they do so. A 95% confidence interval is correctly calculated from this data as (0.12, 0.18). Which of the following is the correct interpretation of this confidence interval ?
a. None of these are correct.
b. We are 95% confident that the proportion of the 198 sampled students that actually play basketball is between 0.12 and 0.18
c. We are 95% confident that, among the population of students that play basketball recreationally, the proportion who live on campus is between 0.12 and 0.18.
d. The sample proportion of on-campus students that play basketball will be between 0.12 and 0.18 in 95% of samples of size 198
Answers
Answer:
c. We are 95% confident that, among the population of students that play basketball recreationally, the proportion who live on campus is between 0.12 and 0.18.
Step-by-step explanation:
According to the question, it is mentioned that there is 95% confidence interval and it is calculated (0.12,0.18)
So the correct interpretation is that they are 95% confident that the students who play basketballs the proportion should lies between 0.12 and 0.12
So, the option C is correct
The rest of the options are wrong
Who ever answers it gets Brainly
Which of the following equation represents a linear function
Answers
Answer: it is c
Step-by-step explanation:
Find the value of x
A. 7
B. 8
C. 10
D. 15
Answers
Explanation:
5 x
__ = __
3 6
(cross multiple)
30 3x
__ = __
3 3
(divide 30 and 3)
x=10
Solve for x, show work!
Answers
Answer: x=3
Step-by-step explanation:
One of the properties of diagonals of a rectangle is that they bisect each other, meaning that four segments are equal.
For example, in this question, according to the property, AE, CE, DE, BE will be equal.
Solve:
AE=CE
AE+CE=AC
CE+CE=AC
DB=AC
DB=2CE
(18)=2(4x-3)
18=8x-6
18+6=8x-6+6
24=8x
24/8=8x/8
x=3
Hope this helps!! :)
Please let me know if you have any questions
help i will give brainliest
Answers
Pleaseeeeeee helpppppppppppppppp
Answers
Answer:
itz A
Step-by-step explanation:
Love you hun;)
There are twice as many girls as there are boys in the chess club. If there are 18 girls in the club, how many boys are in the club?
I mark brainliest by today
Answers
Dr. Lopez gives students 90 minutes to complete the final exam for her course. Most students use almost all the
time allowed, and relatively few students finish early, so the distribution of times that it takes students to finish
the exam is strongly skewed to the left. The mean and standard deviation of the finishing times are 85 and 10
minutes, respectively.
Suppose we took random samples of 40 students and calculated as the sample mean finishing time. We can
assume that the students in each sample are independent.
What would be the shape of the sampling distribution of ??
Choose 1 answer:
Skewed to the left
Skewed to the right
No
Answers
Answer:
Approximatly normal
Step-by-step explanation:
Answer:
approximately normal
Step-by-step explanation:
check conditions for constructing a confidence interval about a proportion:
- random sample or randomized experiment?
- 10 % when sampling without replacement, check n≤1/10N (40 students is enough to assume 10%)
- large count
all conditions are met so it is safe to assume distribution will be approximately normal
find the next term in the sequence. please type the number only as you answer. hint first figure out if the sequence is arithmetic or geometric
-3,9,-27,81,
Answers
Because it is x3 every time
help will give brainliest need help ASAP
Answers
Answer:
LQ: 7.5
UQ: 21
Step-by-step explanation:
After identifying the median, remove it and split the data into two halves.
The upper quartile is the median is the top set of data and the lower quartile is the median is the bottom set of data.
If you have two numbers in the middle, you add them and divide by two to find the median/ quartile
so
[tex]\frac{7+8}{2} =7.5[/tex]
[tex]\frac{21+21}{2} =21[/tex]
LQ: 7.5
UQ: 21
Please help due today
Answers
Our fathers brought forth on this continent a new nation.
help asap
IS
Find the value of x. Round to the
nearest tenth.
35
х
12
X=
= [ ?]
Answers
Answer:
x ≈ 17.14
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan35° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{12}{x}[/tex] ( multiply both sides by x )
x × tan35° = 12 ( divide both sides by tan35° )
x = [tex]\frac{12}{tan35}[/tex] ≈ 17.14 ( to the nearest tenth )
Asap need help fast pls!!!!!!
Answers
Answer:
i think its 20 too, tho good luck
Step-by-step explanation:
question is included in the picture
Answers
Answer:
Step-by-step explanation:
d is the right answer
Answer:
tis d hope this helped have a great day
Step-by-step explanation:
A consultant wants to ask workers at a factory about the workers' job satisfaction. Which of the following best describes a stratified sample of workers?
a. The consultant forms groups of workers based on the workers' shifts. Then, he selects workers at random from each group.
b. All of the workers on the second floor of the factory building are easily accessible. So, the consultant selects the first workers from the second floor to arrive at work on a particular day.
c. The consultant forms groups of workers based on the lengths of time the workers have worked at the factory. Then, he randomly chooses groups and selects all of the workers in these groups.
Answers
Answer:
A. the consultant forms groups of workers based on the workers' shifts. then, he selects workers at random from each group.
Step-by-step explanation:
Sana nakatulong
Answer:
A
Step-by-step explanation:
Wendy wants to run 3 miles. Each lap around the track at her school is 1··8 mile. Wendy wants to figure out how many laps she needs to run.
Answers
Answer:
1.6 laps
Step-by-step explanation:
Simply divide 3 over 1.8 to get the number of laps.
Write and simplify an algebraic expression to represent the area of the shaded region. The image is below.
Plz solve with a full proces. God bless u very much. I will give brainliest
Answers
[tex](x+2)^2 - 1\cdot(x-5) = x^2 + 2\cdot2x + 2^2 - (x - 5) = x^2 + 4x + 4 - x + 5 = x^2 + 3x + 9[/tex]
Circle P has a circumference of approximately 75
inches.
What is the approximate length of the radius, r? Use 3.14
for y. Round to the nearest inch,
12 inches
D24 inches
38 inches
46 inches
Answers
Answer:
12 in
Step-by-step explanation:
C=2pi *r
75/2(3.14)=r
r=75/6.28
~11.94~12 inches
if my answer helps please mark as brainliest
Answer:
12 in
Step-by-step explanation:
Circumference:
C = 2πr
75 = 2(3.14)r
75 = 6.28r
r = 75/6.28
r = 11.95 ≈ 12