Answer:
9 days
Step-by-step explanation:
31.50÷3.50 is 9 and 9×3.50 is 31.50
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviation is known at 0.5 minutes. We want to test to determine whether or not the mean waiting time of all customers is significantly different than 3 minutes. Use a = 0.05. The test statistic is a 1.96 b. 1.64 c. 2.00 d. 0.056 The p-value is a. 0.0456 b. 0.0482 c. 0.4772 d. 0.9759 e. 0.9772 At the 5% level, you a. fail to reject the null hypothesis b. reject the null hypothesis
Answer:
The test statistic is c. 2.00
The p-value is a. 0.0456
At the 5% level, you b. reject the null hypothesis
Step-by-step explanation:
We want to test to determine whether or not the mean waiting time of all customers is significantly different than 3 minutes.
This means that the mean and the alternate hypothesis are:
Null: [tex]H_{0} = 3[/tex]
Alternate: [tex]H_{a} = 3[/tex]
The test-statistic is given by:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
Sample of 100 customers.
This means that [tex]n = 100[/tex]
3 tested at the null hypothesis
This means that [tex]\mu = 3[/tex]
The average length of time it took the customers in the sample to check out was 3.1 minutes.
This means that [tex]X = 3.1[/tex]
The population standard deviation is known at 0.5 minutes.
This means that [tex]\sigma = 0.5[/tex]
Value of the test-statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{3.1 - 3}{\frac{0.5}{\sqrt{100}}}[/tex]
[tex]z = 2[/tex]
The test statistic is z = 2.
The p-value is
Mean different than 3, so the pvalue is 2 multiplied by 1 subtracted by the pvalue of Z when z = 2.
z = 2 has a pvalue of 0.9772
2*(1 - 0.9772) = 2*0.0228 = 0.0456
At the 5% level
0.0456 < 0.05, which means that the null hypothesis is rejected.
please help i have an f in my class and will get in big trouble! help me you have to write the line in slop intercept form please
The ratio table below shows the relationship between the weight of apples purchased and the total cost of the apples. Apple Cost Weight (lb) Total cost ($) 1 2 8 6 12 10 20 When the weight of apples is increased by a factor of 4, by what factor does the total cost increase? 3 6 08
Answer:
8
Step-by-step explanation:
math help with math please help
Answer:
X=6
Explain your Explanation:
Answer:
x=6
Step-by-step explanation:
What 3 number combination will open the lock ?? Imagine a lock has a 3 digit combination use the clues below to figure out the correct combination to open the lock .
682- One digit is right and in the correct place .
614- One digit is right but in the wrong place
206- Two digits are right but both in the wrong place.
738-All digits are wrong
380- One digit is right but in the wrong place
please write it in your own words
please please please help me I promise I gave you Brainlist
Answer:
062
Step-by-step explanation:
2 is right and in the correct place
2 & 6 are right but in the wrong place
0 is right but I the wrong place
What is the lateral surface area of the square pyramid represented by this net?
Enter your answer in the box
__ft²
Answer:
240ft
Step-by-step explanation:
took test
Is (3,6) a solution of the system of linear equations below? Justify your response. Use of the graph is optional.
-6x + y= -12
X + y= -3
Answer:
No.
Step-by-step explanation:
The given system of equations are :
-6x + y= -12 ......(1)
x + y= -3 ......(2)
Put x = 3 and y = 6 in both equations i.e.
-6(3) + (6) = -12
And
3 + 6 = 9 ≠ -3
Hence, (3,6) is not the solution of the given system of equations.
Part B What is the unit for Warren’s data?
This is due tommorrow at 12:44PM!!!!!!!!
Answer: The unit for Warren’s data is the number of cars sold each day.
Sorry for the answer being so late!
Which is the equation of the line that passes through the points (4, 3) and (6, 2)?
Answer:
answer is c hope this helps
Step-by-step explanation:
The graph of f (2) is shown as a dashed curve.
10
8
1
6
1
1
4
1
1
2
0
2
4
-6
-8
-10
-10
8
6
2
0
2
8
10
Answer:
???
Step-by-step explanation:
please help me out with this
Answer:
1) Since 4(5+x) is 4*5+4*x, and because 4*5+4*x is
A rectangular chalkboard is 1.7 m long and 0.9 m wide.
What is the area of the chalkboard?
O A. 1.53 m2
B. 1.63 m2
OC. 2.6 m2
0
D. 5.2 m2
Help!
Answer:
[tex]A=1.53\ m^2[/tex]
Step-by-step explanation:
The length of a chalkboard, l = 1.7
The width of a chalkboard, b = 0.9 m
We need to find the area of the chalkboard. The formula for the area of a rectangle is given by :
[tex]A=L\times B\\\\A=1.7\times 0.9\\\\A=1.53\ m^2[/tex]
So, the area of the chalkboard is equal to [tex]1.53\ m^2[/tex].
Find the surface area, given that the area of each hexagon is 166 square feet.
Answer:
1148 square feet
Step-by-step explanation:
what is 37.13 + 21.03 =
Answer:
58.16
Step-by-step explanation:
is the answer
easy question
HELP ASAP! PLZZZZZZZZZZZZ
What is the range of the relation in the table below? у -2,0 -1,2 0,4 1,2 2,0
Answer:
6
Step-by-step explanation:
Range : hightest number - lowest number
4 - (-2)
Can someone help please, please no dirty links you will be reported.
Answer:
3.25
nskkdbskaxmxbshlmsg
Paula ran 24 ft with the football and then passed it 15 feet to Newt. Newt ran 70 yards for a touchdown. What was the total number of feet the ball traveled?
Please tell me how you did it and give me the problem on how u did it
Answer:
249 ft
Step-by-step explanation:
70yd=210 ft so 210+15+24=249
Answer:
249 ft
Step-by-step explanation:
24 + 15 = 39
39/3 = 13
13 + 70 = 83
83 * 3 = 249
7.25. Horizontal Sight Distance - Around the shed. Just north of town, traffic on 2-lane North 9th enters a righthand curve. Filleen feet to the right of the pavement edge stands a large storage shed. A concerned neighbor is able to pace off the length of the tangent as 196 feet and estimate A as 45 degrees. The lanes are 12 feet wide. A. Using the neighbor's estimates, what is the radius of the horizontal curve
help what’s the total lol i’m confused
Answer:
45
Step-by-step explanation:
brainliest?
In ΔGHI, h = 990 inches, g = 910 inches and ∠G=53°. Find all possible values of ∠H, to the nearest degree.
= 60 and 120
The answer for that is = 827
2 questions plz Both will be in the comments
Javina is at the store buying cheese. The cost of the cheese
is $0.44 per ounce. She buys 10 ounces of the cheese.
How much money does Javina spend on the cheese?
$9.00
B
$4.50
C $4.40
$8.80
Answer: $4.40
Step-by-step explanation:
10 times 0.44 equals 4.40
Answer:
Step-by-step explanation:
c 10 times 0.44= 4.40
PLEASE HELP QUICKKKKK WILL GIVE BRAINLY
Question 2 (02.03)
Figure TUVW is transformed to T’U’V’W’, as shown:
Which of the following sequences of transformations is used to obtain figure T’U’V’W’ from TUVW?
1. Reflection about the y-axis followed by a translation left by 2 units
2. Reflection about the x-axis followed by a translation left by 2 units
3. Counterclockwise rotation by 90 degrees about the origin followed by a translation right by 2 units
4. Counterclockwise rotation by 90 degrees about the origin followed by a translation left by 2 units
What is the radius and diameter of the following circle?
7 cm
Radius
cm
Diameter =
cm
Helpppppppppp plsssssss
Answer:
1.05
Step-by-step explanation:
shop A: 2x3= 6
shop b: 5 for 1.10, 5 more for .55, so 1.65/10
1.65×3= 4.95
6-4.95= 1.05
plz no spam
One rectangular solid with a square base has twice the height of another rectangular solid with a square base with the same side length. Which statements about the two rectangular solids are true? Check all that apply.
The bases are congruent.
The solids are similar.
The ratio of the volumes of the first solid to the second solid is 8:1.
The volume of the first solid is twice as much as the volume of the second solid.
If the dimensions of the second solid are x by x by h, the first solid has 4xh more surface area than the second solid.
Answer:
im sorry i need my points back
Step-by-step explanation:
(11+x)/2-(9x-3)/4 x=3
Answer:
(11+X)/2-(9x-3)/4 x=3
subsititute 3 into all x
(11+3)/2-(9*3)-3)/4
first solve the first diviision
2-(9 times 3)-3/4
=2-(27-3)/4
=2-(24)/4
since the "2-" is there, you have to subtract it from 24 before you dividewhich would then be
22/4=5.5(in decimal form)
DON'T forget you have another bracket waiting for you since you were given 3 brackets. bring the first bracket down
2-(9x-3)/4 was solved and we got 5.5, so basically we are "substituting 5.5 into that part of the question)
11+x/5.5
11+3/5.5
14/5.5
=2.54 which is your final answer
Sorry if I went overboard lol.
Step-by-step explanation:
yes, the answer is 2.54 I believe.
About how many times larger is 7.9×10^4 than 2.1×10^3?
Answer:
37.619047619 times larger
Step-by-step explanation:
7.9 × 10000
79000
2.1 × 1000
2100
79000 > 2100
79000 ÷ 2100
37.619047619
IXL box plots for 6th grade
PLEASE HELP ASAP IM DIEING HERE
Answer:
IQR = 8
Step-by-step explanation:
IQR is the difference between the 3rd quartile (12 in this case) and the 1st quartile (4 in this case)