Answer:
A) Reject the null hypothesis and conclude that chocolate affected mood because zero, or no effect, does not fall within the confidence interval
Step-by-step explanation:
The confidence interval could be used as a tool to test an hypothesis on a some certain conditions. When we obtain a confidence interval whose range includes the value 0, we would fail to reject the null hypothesis of such analysis as this upholds the truth of the null hypothesis. However, if the interval does not contain the value 0, we reject the null and claim that there is significant evidence to accept the alternative hypothesis.
Hence, for the confidence interval given [2.34, 5.41], the interval does not contain the value 0, Hence, we reject the null.
If n 9 = 72 , which equation is true?
Answer:
bestieeee wheres the equationsss
Step-by-step explanation:
Dominic's car used 8 gallons to travel 192 miles. At what rate does the car use gas, in
miles per gallon?
Answer:
24 miles per gallon
Step-by-step explanation:
to find the unit rate you divide 192 by 8 and that is 24
so it takes Dominic 1 gallon to drive 24 miles
hope this helps!
A baby giraffe eats 75 pounds of leaves a day. How many pounds of leaves does a baby giraffe eat in 31 days? explain your reasoning
Answer:
2325
Step-by-step explanation:
you multiple 31 by 75 it becomes 2325
In a certain right triangle, one angle measures pi/11, and the side adjacent to that angle has a length of 13. Find the exact measure of the other non-right triangle and the lengths of the other two sides.
9514 1404 393
Answer:
angle: 9π/22opposite side: 13tan(π/11) ≈ 3.817hypotenuse: 13sec(π/11) ≈ 13.549Step-by-step explanation:
The other acute angle in the triangle is the complement of the given one.
π/2 -π/11 = (11 -2)π/11 = 9π/11 . . . . other acute angle
The trig relation applicable to finding the length of the opposite side is ...
Tan = Opposite/Adjacent
tan(π/11) = Opposite/13
Opposite = 13·tan(π/11) ≈ 3.817
The trig relation relevant to finding the length of the hypotenuse is ...
Cos = Adjacent/Hypotenuse
cos(π/11) = 13/Hypotenuse
Hypotenuse = 13/cos(π/11) = 13sec(π/11) ≈ 13.549
Larry is starting his own lawn service company. He has initial startup costs totaling $300, plus ongoing operating expenses. The function representing Larry's expenses and the function representing Larry's income for lawn services are shown in the graph below. Approximately how many lawns will Larry have to mow before he starts making a profit?
Answer:
Larry must mow approximately 25 lawns before he starts making a profit
Step-by-step explanation:
whats 2+2 i dont know the answer .......................
Answer:
4
Step-by-step explanation:
Two cooies plus two cookies is four cookies.
If f(x)=1−x^2 +x^3 , then f(−1)=
Answer:
f(-1) = -1
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
FunctionsFunction NotationStep-by-step explanation:
Step 1: Define
Identify
f(x) = 1 - x² + x³
f(-1) is x = -1 for the function f(x)
Step 2: Evaluate
Substitute in x [Function f(x)]: f(-1) = 1 - (-1)² + (-1)³Exponents: f(-1) = 1 - 1 - 1Subtract: f(-1) = -1An airplane flies at an altitude of 6 miles toward a point directly over an observer. Consider and x as shown in the figure.
(a) Write as a function of x.
(b) Find when x = 11 miles and x = 4 miles. (Enter your answers in radians rounded to two decimal places.)
Answer:
20.7 I hope this is right good luck
Suppose a sample of 80 with a sample proportion of 0.58 is taken from a
population. Which of the following is the approximate 99.7% confidence
interval for the population parameter?
Answer:
99.7% confidence interval is [tex][0.4162,0.7437][/tex]
Step-by-step explanation:
The formula for a confidence interval for a population proportion is [tex]CI=\hat{p}\pm z^*\sqrt{\frac{\hat{p}(1-\hat{p})}{n} }[/tex] where [tex]\hat{p}[/tex] is the sample proportion, [tex]n[/tex] is the sample size, and [tex]z^*[/tex] is the critical score for the desired confidence level.
We are given a sample size of [tex]n=80[/tex] and a sample proportion of [tex]\hat{p}=0.58[/tex]. Our critical score for a 99.7% confidence level would be [tex]z^*=normalcdf(0.9985,0,1)=2.9677[/tex]
Therefore, the approximate 99.7% confidence interval for the population parameter is [tex]CI=\hat{p}\pm z^*\sqrt{\frac{\hat{p}(1-\hat{p})}{n} }=0.58\pm 2.9677\sqrt{\frac{0.58(1-0.58)}{80} }=[0.4162,0.7438][/tex]
So we are 99.7% confident that the true population proportion is contained within the interval [tex][0.4162,0.7437][/tex]
Answer:
(0.414, 0.746)
Step-by-step explanation:
big brain
23) A recipe for cupcakes calls for 6 cups of
sugar. Shreya has already put in 3 cups.
How many more cups does she need to put
in?
Answer:
Shreya must put in 3 more cups of sugar.
Step-by-step explanation:
Given that a recipe for cupcakes calls for 6 cups of sugar, and Shreya has already put in 3 cups, to determine how many more cups does she need to put in to complete the amount required by the recipe, the following calculation must be performed:
6 - 3 = X
3 = X
Therefore, Shreya must put in 3 more cups of sugar.
Find the volume
Show work
Sir there seems to be a picture in your pixels.
i would assume the measurements (from left to right) is 34m 14m 20m and 14m
find the area of the triangle so split the 24 in half 12 and 12
then multiply 12*14 which is 168
i would assume the area is 168m^2
then multiply by 20m
3360m ^3
Math problem 16.
Find the value of x, y and z.
Answer:
sqrt. 244
Step-by-step explanation:
a^2 + b^2 =c^2
10^2 + 12^2 =244
c^2 =244
c= sqrt. 244
Answer:
if x+y equal 90
and z equal 2 sqrt 61
if you want the real values of the x and y iam not sure but you have to use ratios and proportions Formula for example 24k=90
k =15/4
y=10k
x=12k
like this hopefully its helpful
Please help me I really need to finish this
Answer:
9
Step-by-step explanation:
please helpp me with this assignment
Plz help will mark as brainleist
Answer: B
Step-by-step explanation:
First, simplify the main expression. The answer is 21.
Then simplify A. It is -106. That is not equal to 21 so A is wrong.
Then simplify B. That is 21. That means B is correct and you don’t have to solve C or D.
Help me with this problem!!!!
Cooper invested $3,100 in an account paying an interest rate of 2%
compounded quarterly. Robert invested $3,100 in an account paying an
interest rate of 3 % compounded continuously.After 12 years, how much
more money would Robert have in his account than Cooper, to the nearest
dollar?
Answer:
Rounded to the nearest dollar, Robert will have $ 505 more than Cooper on his account.
Step-by-step explanation:
Given that Cooper invested $ 3,100 in an account paying an interest rate of 2% compounded quarterly, while Robert invested $ 3,100 in an account paying an interest rate of 3% compounded continuously, to determine, after 12 years, how much more money would Robert have in his account than Cooper to the nearest dollar, the following calculation must be made:
Compound interest formula: Initial x (1 + interest / composition) ^ composition x years
Continuous compound interest formula: Initial x exp ^ (interest x years)
Cooper:
3,100 x (1 + 0.02 / 4) ^ 12x4 = X
3,100 x (1 + 0.005) ^ 48 = X
3,100 x 1,005 ^ 48 = X
3,100 x 1,270 = X
3,938.51 = X
Robert:
3,100 x 2.71828182845904 ^ (3x12) = X
4,443.32 = X
4,443.32 - 3,938.51 = X
504.51 = X
Therefore, rounded to the nearest dollar, Robert will have $ 505 more than Cooper on his account.
Answer:
$139
Step-by-step explanation:
Help me and I’ll give you Brainliest and if u don’t know don’t answer
Answer:
2 in. × 25 in. [Choice 2]5 in. × 10 in. [Choice 4]1 in. × 50 in. [Choice 6]An oblique cone has a radius of 18 units and a volume of
2592 cubic units. What is the height of the cone?
Answer:
use formula,
volume=1/3hπ[tex]r^{2}[/tex]
2592=1/3*h*3.14*(18)^2
2592=1/9.42h*324
2592=1/3050.08h
2592h=1/3050.08
h=1/3050.08*1/2592
h=1/79058071.36
h=1.26*10^-8
Step-by-step explanation:
Find the volume of cone pictured below. Use 3.14 for /pi . Round your answer to the nearest hundredth.
Answer: 718.38
Step-by-step explanation:
A manufacturer produces widgets that are packaged in boxes of 100. The probability of a widget being defective is 0.021. Find the mean and standard deviation for the number of defective widgets in a box.
Answer:
[tex]\=x=2.1[/tex]
[tex]\sigma=2.03[/tex]
Step-by-step explanation:
From the question we are told that:
Sample size[tex]n=100[/tex]
Probability of a defective widget [tex]P=0.021[/tex]
Generally the equation for binomial trial is mathematically given by
[tex]q=1-p[/tex]
[tex]q=1-0.021[/tex]
[tex]q=0.979[/tex]
Since X is binomial random variable with functions of n and p,The equation of mean \=x
[tex]\=x=E(x)[/tex]
Where
[tex]E(x=n*p)[/tex]
[tex]\=x=100*0.021[/tex]
[tex]\=x=2.1[/tex]
Generally the equation for variance \sigma is mathematically given by
[tex]\sigma=\sqrt{nqp}[/tex]
[tex]\sigma=\sqrt{200*0.021*0.979}[/tex]
[tex]\sigma=2.03[/tex]
Helppp plzzzzzz!!!!!!
Answer: a
Step-by-step explanation:
what is the reciprocal of 3/2?
please text it and not upload a pic thank you
Find the AREA.
help I need help fast I have 15 minutes
Answer:
78
Step-by-step explanation:
a= (a+b/2)(H)
9+17=26/2=13x6= 78
do bedmas
hope this helps
Please help quickly as possible thank you! :)
2 kg is better to buy
3.99/3= 1.33
2.59/2=1.29
so 2 kg is better
Scores for a common standardized college aptitude test are normally distributed with a mean of 496 and a standard deviation of 110. Randomly selected men are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the preparation course has no effect. If 1 of the men is randomly selected, find the probability that his score is at least 545.7. P(X > 545.7)
Answer:
0.3257
Step-by-step explanation:
Given an approximately normal distribution:
Z = (x - mean) / standard deviation
Mean = 496 ; Standard deviation = 110
For :
P(x > 545.7)
We obtain the standardized, Z score
Z = (545.7 - 496) / 110
Z = 49.7 / 110
Z = 0.4518
Hence, using the Z distribution table :
P(Z > 0.4518) = 1 - P(Z < 0.4518)
P(Z > 0.4518) = 1 - 0.67429
P(Z > 0.4518) = 0.32571
I need help with whatever I can get done this whole sheet makes 0 sense to me so I recommend 1-4 is fine
Answer:
pictured below!
sorry for my messy handwriting
At a local basketball game, all tickets are the same price and all souvenirs are the same price. Mr. Smith bought 2 tickets to this basketball game and 1 souvenir for
a total of $17.25. Ms. Lockhart bought 5 tickets to the same game and 2 souvenirs
for a total of $42.00. How much was a ticket to this game?
Answer:
the answer will be 7.50
Step-by-step explanation:
what is a surface area of a juice box that is 4 inches high 3 inches long 2 inches wide
Answer:
24inch^3
Step-by-step explanation:
i hope this helps
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Answer:
hhhhhhhhhhhhhhhhhhhiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
Step-by-step explanation:
Answer:
Hi
Step-by-step explanation:
Thanks so much for the free p0ints! hereś a meme to make you laugh!