Complete question :
Online photos: A poll surveyed 1765 internet users and found that 865 of them had posted a photo or video online. Can you conclude that less than half of internet users have posted photos or videos online? Use the α 0.01 level of significance and the P-value method with the TI-84 calculator.
1. State the appropriate null and alternate hypotheses.
2. Compute the P-value.
Answer:
H0 : p = 0.5
H1 : p < 0.5
P value = 0.200454
Step-by-step explanation:
Given that :
Claim : Less than half internet users have posted photos or videos online.
Sample Proportion (p) = 865 / 1765 = 0.4900
The null hypothesis : H0 : p = 0.5 (that is half of internet users have posted photos online.
The alternative hypothesis : H1 : p < 0.5 (that is less than half of internet users have posted photo or video ;
P = 0.5
q = 1 - 0.5 = 0.5
The test statistic :
Z = p - p0 / sqrt(p0 * (q/n))
Z = (0.49 - 0.5) / sqrt(0.5 * (0.5/1765))
Z = - 0.01 / sqrt(0.5 *0.0002832)
Z = - 0.01 / sqrt(0.0001416)
Z = - 0.01 / 0.0119013
Z = - 0.8402443
The corresponding p value from the z statistic score at α = 0.01
= 0.200454
ASAP please help me I need this quick
The question and answers are in the picture
Answer:
D.
Step-by-step explanation:
im in geometry class rn and my teacher just showed me this brainliest pls
Answer:
D. 4✓3
Step-by-step explanation:
Pythagorean theorem is a^2+b^2=c^2 so put your values in that equation. The c^2 is the hypotenuse, which is 8 and the b^2 is the 4. put those values in and solve the equation.
Hope this helps!!
Which one should I choose
Answer:
100% B
Step-by-step explanation:
Answer:
The first choice: x^6y^5
Step-by-step explanation:
When you multiply exponential you add the exponents.
How do you write this in a expression?please answer quick (take away a number n from 24)
Answer:
24-n
Step-by-step explanation: hope this helps if it does pls give brainliest tysm!
Answer:
24-n
Step-by-step explanation: we taking away so that is substraction.
Which of the following correctly describes the end behavior of the polynomial
function, f(x) = 2x4 - 3x2 + 2x?
A. The left end goes up and the right end goes down.
B. Both ends go down.
C. Both ends go up.
D. The left end goes down and the right end goes up.
Answer:
both ends go up
Step-by-step explanation:
what is the partial product for 1,600 and 280
Answer:
Hope this helps!
Step-by-step explanation:
Answer:
Step-by-step explanation:
Convert days to weeks by completing the number sentence. 35 days=
Answer:
5 weeks
Step-by-step explanation:
35 divided by 7 is 5
Lake Okeechobee’s water level was at sea level in April. In May, the lake’s level rose 4 inches and in June it rose 2 more inches. As a result of no rain, the lake’s level fell 5 inches in July and 3 more inches in August.
Select all the expressions that describe this situation.
4 – 5
4 + 2 – 5 – 3
4 + 2 – (5 – 3)
4 + 2 – (5 + 3)
4 + 2 – (– 5) – (– 3)
4 + 2 + (– 5) + (– 3)
Answer:
B,D,E
Step-by-step explanation:
PLZ HELP ASAP!!!!!
Which statement is true regarding the graphed function
A. f(0)=g(0)
B. f(-2)=g(-2)
C. f(0)=g(-2)
D. f(-2)=g(0)
Adita has 21 flowers.
She wants to split them equally among 7 friends.
How many flowers can Adita give to each friend?
Answer:
3 flowers each
Which would describe a translation 2 unis left and one unit up
Answer:
(2, 1) or (1, 2)
Step-by-step explanation:
I not sure :3 I think its most likely (1, 2)
what is -200000000000+100000000000000000-3x40000000000000000000-2+33000000000000000000000000
Answer:
3(−x40000000000000000000+1.1000000033333267e+25)
Step-by-step explanation:
Factor −200000000000+100000000000000000−3x40000000000000000000−2+3.3e+25
−3x40000000000000000000+3.30000000999998e+25
=3(−x40000000000000000000+1.1000000033333267e+25)
Answer:
some big obnoxious number lol
Step-by-step explanation:
Darrell and Lyle are college basketball players. Darrell is 198.1 centimeters tall. Lyle is 190.5 centimeters tall. How much taller is Darrell than Lyle?
Answer:
7.6 centimeters taller
Step-by-step explanation:
You just have to take 198.1 and subtract 190.5 from it
There are 7 socks in a bag. 2 of those socks are blue.
What is the probability of picking a blue sock randomly from the bag
Answer:
2/7 or about 28% depending on what type of answer your teacher is looking for
of the 480 canned foods collected, 45% of them were canned vegetables. How many canned vegetables did the school collect last month
A wooden board that is 108 inches long is cut into two equal parts. What is the length of each part in feet? (feet : inches = 1 : 12) A. 0.45 feet B. 4.5 feet C. 9 feet D. 54 feet
Answer:
the answer is c. 9 feet
Step-by-step explanation:
i just did the math and i got 9 so i hope this helps!
what is the percent increase from 2,000 to 3,000
How would you do this as a decimal number ?
Answer:
-5.875
Step-by-step explanation:
Pleas help me fast!
Answer:
35
Step-by-step explanation:
17-7+5^2 Divide 28 by 4
17-7+25 5 to the power 2 is 25
10+25 add 25 and 10 and you get 35.
35
Answer:
35
Step-by-step explanation:
Plz i NEED HELP ABOUT TO FINISH THIS CLASS! PLZ
17. Does the following system have a unique solution? Why?
Answer:
last one
Step-by-step explanation:
Rusty hiked 3 3/4 miles in the morning and 2 1/4 miles in the afternoon. How much
farther did he hike in the morning than the afternoon?
Answer:
1 [tex]\frac{1}{2}[/tex] miles
Step-by-step explanation:
Convert 3 [tex]\frac{3}{4}[/tex] and 2 [tex]\frac{1}{2}[/tex] into improper fractions
Subtract them like a regualr equation
[tex]\frac{15}{4}[/tex] - [tex]\frac{9}{4}[/tex] = [tex]\frac{6}{4}[/tex]
Convert [tex]\frac{6}{4}[/tex] into a mixed number to get 1 [tex]\frac{1}{2}[/tex]
explain how to find 45% of a number
A-multiply the number by 0.45.
B-Divide the number by 4.5.
C-Divide the number by 45.
D-multiply the number by 4.5.
Choose the number from each drop-down menu that best completes the sentence,
Maya made a mistake in step
and David made a mistake in step
WILL GIVE BRAINLIEST
Answer:
Maya mistake is in step 1
Step-by-step explanation:
Answer:
Maya in Step 1
David in Step 3
Step-by-step explanation:
Maya
5 (x-3) = 12
5x - 15 =12 (step 1)
David
3x + 3 = 2 (x - 1)
3x + 3 = 2x - 2
3x - 2x + 3 = 2x - 2x - 2
x + 3 = -2 (step 3)
6th grade math look at the pictures
Answer:
use a calculator.
Step-by-step explanation:
Answer:
2. 17.624
3. 9.72
4. 14.3
5. 2.11
8. 5,105.16
10. 124.7
Step-by-step explanation:
Find the solutions by using the quadratic formula: *
y=x2 – 5x +11
:)))))))))))))))))))))))
List the sides in order from shortest to longest. The diagram is not to scale.
66
50
64
YO NEED SOME HELP ON THIS END OF GRADE SOON!!
Answer: b
Step-by-step explanation:
Cuz is a negative get in absolute value it always comes out positive
And it says below 0-9=-9
Answer:
BStep-by-step explanation:
__________________________________________________________
B is the answer because,
if the negative sign is not inside the "brackets," then the number will still be negative.
__________________________________________________________
But, if the negative sign is connected to the number, or inside the "brackets," then it will always be positive.
__________________________________________________________
Here are the reasons why the rest are wrong.
__________________________________________________________
A is not correct because the outcome isn't negative, even though it's correct in mathematical instances.
__________________________________________________________
C is not correct because it is plainly not correct in itself.
__________________________________________________________
D is also not correct because it is not correct in the mathematical equations, even though it has a -9 as the equal, it's still wrong.
__________________________________________________________
Hope this helps! <3
__________________________________________________________
The results of a recent survey showed that the average cost to rent a car for a week is $276. If the standard deviation is $60,
find the Z-score for a weekly rental of $423.00?
a. 2.45
B. 4.6
C. 7.05
D. -1.88
The Z-score for a weekly rental is 2.45 which is the correct answer would be option (B).
What is Z -score?A Z-score is defined as the fractional representation of data point to the mean using standard deviations.
Given the average cost to rent a car for a week is $276
And the standard deviation is $60
To determine the Z-score for a weekly rental of $423.00
Here,
ц = 276
σ = 60
X = 423
⇒ z-score = (X-ц )/σ
Substitute the values,
⇒ z-score = (423 - 276)/60
⇒ z-score = 147/60
⇒ z-score = 2.45
Hence, the z-score for a weekly rental is 2.45.
Learn more about the z-score here:
brainly.com/question/13793746
#SPJ2
David is buying a cheese wheel priced at $14 before tax. The store charges 8%, percent sales tax
THE ANSWER IS 15.12
Answer:
15.12
Step-by-step explanation:
14*1.08
15.12
8.
Mia's booth rental fee at a hair salon is $128 per week. Which table shows the sum of the amount that Mia will pay over the next 8 weeks?
Answer: If you're renting a chair/booth, it's making sure ALL of the costs ... That's $3000 in revenue generated per week or $150K in revenue ... It's waiting for hair to dry.
Step-by-step explanation:
Diana completes 205 jumping jacks in 5 minutes at a constant rate. How many jumping jacks did she accomplish in 2 minutes?
Answer:
82
Step-by-step explanation:
205/5=41 jumps per minute
41*2= 82 jumping jacks
hope this helps :))