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A random sample of 20 married women showed that the mean time spent on housework by them was 29.8 hours a week with a standard deviation of 6.7 hours. If the margin of error is 3.14, find a 95% confidence interval for the mean time spent on housework per week by all married women.
Answer:
95% confidence interval for the mean time spent on housework per week by all married women.
( 26.66 , 32.94)
Step-by-step explanation:
Step(i):-
Given random sample size 'n' = 20
Mean of the sample (x⁻ ) = 29.8 hours
Standard deviation of the sample (S) = 6.7
Given Margin of error = 3.14
Step(ii):-
95% confidence interval for the mean is determined by
[tex](x^{-} - t_{0.05} \frac{S}{\sqrt{n} } , x^{-} +t_{0.05} \frac{S}{\sqrt{n} })[/tex]
We know that margin of error is determined by
[tex]M.E = \frac{t_{0.05}XS.D }{\sqrt{n} } = 3.14[/tex]
Now 95% confidence interval for the mean time spent on housework per week by all married women.
[tex](29.8 - 3.14 , 29.8+3.14)[/tex]
( 26.66 , 32.94)
y < -6( x − 18) − 2 when y = 46?
Well since y would be 46 if this is just you trying to find x, the answer would be x < 10
What is the point-slope form equation of the graph?
Answer:
y-4= 1/2(x+2)
Step-by-step explanation:
I needdd helpppppppppp
Answer:
answer should be B
Step-by-step explanation:
hopefully this helps
Answer: Second one
Step-by-step explanation:
1/2 * 3 = 3/6
1/3 * 2 = 2/6
3/4 * 3 = 9/12
2/3 * 4 = 8/12
-1/4 * 3 = -0.75
-2/3 * 4 = -2.67
-1 = -1
3/4 = 0.75
How do i solve
X^56 x X^14
Answer:
x^70
Step-by-step explanation:
When multiplying exponents, you just add them up.
x^56+14= x^70
Pleaseeeee answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!
Answer:
45 miles
Step-by-step explanation:
Use the Pythagorean Theorem. Imagine a line connecting the ends of the right angle you made by driving. It would make a right triangle. You are trying to find the hypotenuse. Use the formula [tex]a^{2} +b^{2} =c^{2}[/tex]. Square 27, or multiply 27 by 27, to get 729. Add this to the square of 36, 1296. So [tex]c^{2}[/tex] = 2025. Find the square root of 2025. [tex]\sqrt{2025}[/tex] = 45. Hope this helped ^^
Please helppppp!!!!!!!!
Answer: I think it's B
Step-by-step explanation: You can use the answer if you want.
3 values greater than |-3.5|
Answer:
6.5
Step-by-step explanation:
3.5 + 3
Answer:
6.5
Step-by-step explanation:
I-3.5I = 3.5
3.5 + 3 = 6.5
Check Work:
6.5 - 3.5 = 3
or
I-3 - 3.5I = I-6.5I = 6.5
what is 5/8 divided by 4
Answer:
0.156
Step-by-step explanation:
Answer:
5/32
Step-by-step explanation:
[tex] \frac{5}{8} \div 4 \\ \\ = \frac{5}{8} \times \frac{1}{4} \\ \\ = \frac{5 \times 1}{8 \times 4} \\ \\ = \frac{5}{32} [/tex]
what is | -5 | + 7
Answer: 12
Step-by-step explanation:
It’s algebra one please help
Answer: I'm gonna say (3,-2)
Step-by-step explanation: my best guess, bc they intersect
Helpppppppppp!!!!!!!!!
Answer:
B
Step-by-step explanation:
50 POINTS PLUS BRAINLIEST
Answer:
New depth: 11.8 feet
Step-by-step explanation:
0.4 x 3 = 1.2 feet / 1.2 feet in 3 seconds
13 - 1.2 = 11.8
Hope this helps!
xoxo,
cafeology
Answer:
43.5 ft below the surface
Step-by-step explanation:
0.5*5= 2.5
-46+2.5= -43.5
A family restaurant chain wants to test the market for a new menu item: a grilled chicken sandwich with chipotle salsa. They are interested in both how to market the item and the right price to charge for it. They decide to offer the sandwich at 60 different restaurants in the chain, using two different descriptions on the menu. Half the restaurants' menus will emphasize "healthy eating" and half will emphasize "value." These two groups of restaurants will be further divided in three groups, each charging either a High, Medium, or Low price for the sandwich. After a month, they will measure what proportion of customers order the new sandwich.
Answer:
Experimental units, factors & treatments in experiment.
Step-by-step explanation:
Experimental Units are the 60 restaurants.
Factors are the : Menu description & price
Treatments in experimental design : Healthy Low Price, Healthy Medium Price, Healthy High price & Value low price, Value medium price, Value high price.
how much weight did the kitten gain in that month?
Answer:
21 ounces
Step-by-step explanation:
https://brainly.com/question/15457567
Answer:
about 2 pounds
At two months the kittens weigh about 2 pounds and can be spayed or neutered.
hope this helps
Find the value of y picture *****
The following could be the shape of a cross section of the prism Except: A.) rectangle. A.) parallelogram. C.) circle. D.) square. Brainly
Brandon's car averages 25 miles per gallon of gas. Predict how far he can travel on 5 gallons of gas
A quantity with an initial value of 120 decays exponentially at a rate of 9.5% every 7
hours. What is the value of the quantity after 3.25 days, to the nearest hundredth?
Answer:
39.46
Step-by-step explanation:
-2(-g + 5)
someone please explain how to simplify then combine like terms
Answer:
2g-10
Step-by-step explanation:
-2(-g+5) take the -2 and multiply each term in the ()
-2*-g= 2g Two negatives multiplied turns it into a positive number
-2*5= -10
The answer is 2g-10
Mariana is choosing a beverage to drink. She wants a beverage with no more than 3 grams of sugar per ounce. Which beverages meet Mariana's requirements?
Answer:
Step-by-step explanation:
The main beverage that would easily meet Mariana's requirements would be water as it contains no sugar. Other than these two flavored options that she can choose from would be to make home-made Ice-tea or lemonade. Therefore, she can choose the amount of sugar to add without going over her own requirements, but still having a delicious beverage to drink.
Ms. Sanchez bought 3 pounds of turkey to make sandwiches for her family. She uses 1/3 of a pound for each sandwich. How many sandwiches can she make?
Answer:
the total number of sandwich required is 9
Step-by-step explanation:
The computation of the number of sandwiches made is as follows:
She bought 3 pounds
And one third of pound she required for each sandwhich
So, the total number of sandwich required is
= 3 ÷ 1 ÷ 3
= 3 × 3
= 9
Hence, the total number of sandwich required is 9
The same is to be considered
what number increased by 62%, results in the value of 59.94
Answer:
The number is : x = 37
Step-by-step explanation:
In order to solve this question, we may set up a proportion.
If the original number is 100%, 59.94 would be 162% of the original, as it was increased by 62%.
so
59.94 → 162%
x → 100%
solving the proportion gives you
59.94 × 100 = 162 × x
x = (59.94 × 100)/162
x = 5994/162
x= 37
Thus, the number is : x = 37
help meeeeeeeeeee its limited
Answer:
2 2/4
Step-by-step explanation:
add the buttons greater then 1 and it will be 2 2/4
A dog has a litter of 5 puppies. You plan to adopt 2 of the puppies. In how many ways can you choose 2 of the puppies from the litter?
Step-by-step explanation:
Number of choices = 5C2 = 5 * 4 / (1 * 2) = 10.
in the expression 15- the sum of 6 and. 7 do you add or subtract first
Answer:
Add
Step-by-step explanation:
By the way this question was worded, I'm going to say add. If I were to write the expression out, I personally would write it like this:
[tex]15-(6+7)[/tex]
And parentheses always occur first.
Hope this helps!
please help me with my math
Answer:
22
Step-by-step explanation:
22 - 19 = 3
3 times -6 = -18
Hope this helps!!
Simplify 81 to the negative 3 fourths power. (1 point)
Question 8 options:
1)
−27
2)
negative 1 over 27
3)
27
4)
1 over 27
Answer:
negative 1 over 27
Step-by-step explanation:
81 * negative 1 over 27 = -3
Answer:
[tex] \dfrac{1}{27} [/tex]
Step-by-step explanation:
[tex] 81^{-\frac{3}{4}} = [/tex]
[tex] = \dfrac{1}{81^{\frac{3}{4}}} [/tex]
[tex] = \dfrac{1}{(\sqrt[4]{81})^3} [/tex]
[tex] = \dfrac{1}{(3)^3} [/tex]
[tex] = \dfrac{1}{27} [/tex]
how many times does 10 go into 2280
Answer:
228
Step-by-step explanation: