Answer:
The critical value is T = 1.895.
The 90% confidence interval for the mean repair cost for the washers is between $48.159 and $72.761
Step-by-step explanation:
We have the standard deviation for the sample, so we use the t-distribution.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 8 - 1 = 6
90% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 6 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.9}{2} = 0.95[/tex]. So we have T = 1.895, which is the critical value.
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 1.895\frac{18.36}{\sqrt{8}} = 12.301[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 60.46 - 12.301 = $48.159
The upper end of the interval is the sample mean added to M. So it is 60.46 + 12.301 = $72.761
The 90% confidence interval for the mean repair cost for the washers is between $48.159 and $72.761
Please help with this I am very stuck because I am horrible at math
Answer:
20
Step-by-step explanation:
Work with a partner. A train travels 50 miles every 40 minutes. To determine
the number of miles the train travels in 90 minutes, your friend creates the
following table.
please help!!
R=9 inches, what is the circumference?
HELPP MEEE
what is the answer to 5 divided by 1/3
Answer:
1 2/3
Step-by-step explanation:
if your dividing fractions you have to multiply
the answer is 15
A = {a,b, {a), c, {a,b)
kümesi veriliyor
Buna gore asagidakilerden hangisi A kümesinin alt
kümelerinden biri değildir?
A) (a)
C) (a, b)
D
E) (b)
Answer:
Step-by-step explanation:
E.......................
is the answer to 3/2x1/2 less than 1 more than or equal to 1
Answer:
The answer to 3/2×1/2 is more than 1
Step-by-step explanation:
If I am wrong, I would like to know the answer
1/8 the sum of 23 and 17
Answer:
5 is the right answer.......
1/8 (23+17) =5
EXERCISE 1.2
0
1. In the number 53.436. how many times is the place value of the digit 3 to the right
of the digit 4 to that of the digit 3 to the left of the digit 4?
sorry di pa namin yan napapag aralan..
Answer:
pv of right 3 is 10 and that on the left is 1000 so it is 1/100 times that of left 4.
Someone help me Plz? Will Give Brainliest!!!
Answer:
no
Step-by-step explanation:
Find the central angle measure
Answer:
76
Step-by-step explanation
The angle across from 104 would be the same Leaving 152 left of 360 and 152 divided by 2 is 76
Sandy's class is going to
the zoo on a field trip. If
the bus holds 12 people
and there are 41 students
and 19 adults going, how
many buses will they need?
IS
Answer:
5 buses
Step-by-step explanation:
Adults and students are both people, add them all up (41+19) and you get 60 People in total. If you divide that by 12 you get 5.
Hope that helps :)
Please help
Work out the product of 1 4/5 and 1 5/8 give your answer as a mixed number
Answer: 117/40 or 2.925
1. Mr. Villa bought 91.25 inches of plastic labeling tape. He will use 1.25 inches long to label each.How many labels can he make???
what is the equation of the line that passes through the point (-2,0) and has a slope of -2?
Answer:
so the equation is y=-2x-4
Step-by-step explanation:
sub the points in the equation to find the y-intercept
y=x(-2)+b
0=-2(-2)+b
0=4+b
0-4=b
-4=b
solve the following equation for a a-32=47
Answer:
5
Step-by-step explanation:
because use the calculator pls ......................
triple u, then raise the result to the 5th power
Answer:
243u⁵
Step-by-step explanation:
you need to put it in brackets then expand
(3u)⁵ = 243u⁵
Answer:
243u^5.
Step-by-step explanation:
Triple u = 3u.
Taking to power 5
= (3u)^5
= 243u^5.
What is 75% converted to a decimal? mal?
Answer:
75% = 0.75
Step-by-step explanation:
75% ÷ 100 = 0.75
Answer:
.75
Step-by-step explanation:
75.% you move the the point 2 spaces to the front and get .75
write 0.1010 in words
Answer:
one tenths and one thousandths
Step-by-step explanation:
The speed of a fish before jumping out of the water can be represented by the equation s = 3h, where h
represents the height, in centimeters, the fish jumps out of the water and s represents the speed of the fish in
meters per second. If the fish is swimming at 15 meters per second before jumping out of the water, how high
can the fish jump?
Answer: The fish can jump 5m high.
Step-by-step explanation:
Given that
s = 3h
where
h = the height(cm) the fish jumps out of the water
and s = speed of the fish(meters per second) then
3 must have seconds as its unit.
Now, If the fish is swimming at 15 meters per second
Then the fish can jump =
s= 3h
15m/s =3h
h= 15m/s/3s
h= 5 meters
A mutual fund company offers its customers a variety of funds: a money-market fund, three different bond funds (short, intermediate, and long-term), two stock funds (moderate and high-risk), and a balanced fund. Among customers who own shares in just one fund, the percentages of customers in the different funds are as follows:
Money market 20%
Short-term bond 15%
Intermediate-term bond 11%
Long-term bond 5%
High-risk stock 18%
Moderate-risk stock 24%
Balanced fund 7%
A customer who owns shares in just one fund is to be selected at random.
Required:
a. What is the probability that the selected individual owns shares in the balanced fund?
b. What is the probability that the individual owns shares in a bond fund?
c. What is the probability that the selected individual does not own shares in a stock fund?
Answer:
a. 7% probability that the selected individual owns shares in the balanced fund.
b. 31% probability that the individual owns shares in a bond fund.
c. 58% probability that the selected individual does not own shares in a stock fund
Step-by-step explanation:
a. What is the probability that the selected individual owns shares in the balanced fund?
7% of the individuals owns shares in the balanced fund, so 7% probability that the selected individual owns shares in the balanced fund.
b. What is the probability that the individual owns shares in a bond fund?
Bond funds (short, intermediate, and long-term):
15%(short-term) + 11%(intermediate-term) + 5%(long-term)
15%+11%+5% = 31%
31% probability that the individual owns shares in a bond fund.
c. What is the probability that the selected individual does not own shares in a stock fund?
Anything but moderate and high risk stock%.
The sum of all probabilities is 100%.
18% + 24% = 42% own stock fund.
100 - 42 = 58%
58% probability that the selected individual does not own shares in a stock fund
Bryson has soccer practice for 2 1/4 hours 2 times a week. How much time does Bryson spend at soccer practice in 1 week?
Answer:
15.75
Step-by-step explanation:
find the length of the missing side
Answer:
Choice D
Step-by-step explanation:
7. Resolver: Cuantas cajas de 30cm*90cm* 78 cm
caben en un contenedor de 180cm*4m*2m
Answer:
Ninguna
Step-by-step explanation:
Porque las dimensiones de las cajas son mucho más grandes que las del contenedor.
(tal vez la pregunta este mal formulada)
please help !!!! Compare the table and equation.
x y
4 12
5 15
6 18
Equation: y = 3x
Which representation has the greatest slope?
A. The table and equation have the same slope.
B. Their slopes cannot be determined.
C. The equation has the greatest slope.
D. The table has the greatest slope.
Answer
I think A or c
Step-by-step explanation:
Your answer to this would be A, The table and equation of the same slope.
To find this, just divide Y by X. For ex, this could look something like 12 divided 4, 15 divided by 5, or 18 divided by 6.
To figure this out too, you can plug in the X and Y components into the equation to see if it checks out.
If you need any further help, please do not hesitate to ask or message me!!
Is j = 27 a solution to this equation? 2 = j/9
kevin went to the minimart and bought some drinks for$2 each and some bags of chips for $3 each. he bought 7 items and paid $18. write a system of equations that could be used to figure out how many drinks, d, and bags of chips, c, kevin bought
Answer: c=4 d=5
Step-by-step explanation:
A triangle has side lengths of (8d – 3) centimeters, (60 + 2) centimeters, and
(75 + 8) centimeters. Which expression represents the perimeter, in centimeters, of
the triangle?
What is the absolute value of the integers, 1-41, 1 +51, 1-61?
Hi there!
absolute value= the opposite of that number if only negative:
Step By Step Explanation:
1-41=41-141-1=40
bring a negative sign if not absolute value.
1+51=51+11+51=52
since it’s already in it’s abolute value it won’t change..
1-61=61-161-1=60
bring a negative sign if nessary..
Therefore, the absolute value for the expression 1-41, 1 +51, 1-61 is 40,52, and 60..
2. If you depart Los Angeles at 9:55 am and arrive in Denver, Colorado at 1:05 pm, how long was your flight?
Answer:
2 hours 10 minutes
Step-by-step explanation:
LA has a one hour time zone difference than Denver. So if it was 9:55 am when you left LA, that is LA time. So, in Denver it was 10:55 am. If you land in Denver, Colorado at 1:05 pm it is the same as 12:05 pm in LA. So you can just count the hours from 9:55 am to 12: 05 pm.
Answer:
3:10 (3 Hours and 10 Minutes)
What is y if x is 0?
Answer: is there a picture or something i can see to help you?