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scoray [572]
3 years ago
14

According to a Pew Research Center study, in May 2011, 40% of all American adults had a smart phone (one which the user can use

to read email and surf the Internet). A communications professor at a university believes this percentage is higher among community college students. She selects 341 community college students at random and finds that 147 of them have a smart phone. Then in testing the hypotheses:H0: p = 0.4 versusHa: p > 0.4,what is the test statistic?z =________________. (Please round your answer to two decimal places.)
Mathematics
1 answer:
kolbaska11 [484]3 years ago
7 0

Answer:

Step-by-step explanation:

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Use the distributive property to write an expression equivalent to 8(35).
Debora [2.8K]

Answer:

280

Step-by-step explanation:

All you have to do is multiply 35 by 8 to get 280.

I am joyous to assist you anytime.

3 0
3 years ago
Which of these situations does not have quantities that combine to make 0.
Lostsunrise [7]

Answer:

B. Hikroko earns $20 working concessions at the football game. she earns $20 as as babysitter

Step-by-step explanation:

also the person who keeps deleting all my answers i hope u break your back

4 0
3 years ago
A bag contains 5 blue marbles, 6 red marbles, and 9 green marbles. Two marbles are drawn at random, one at a time and without re
ArbitrLikvidat [17]
Should be C. 1/19. because if there's 20 maebles in the bag and without replacing the marble then it actually would be 2/18
5 0
3 years ago
Can someone help me with this i am confused
Eva8 [605]
Plot each point on a graph , then count how many you need to go up and then over in this case it is 8 over 1 then calculate the y int so y= 8x -25
6 0
3 years ago
Solve the system by the substitution method.<br> x-2y = -2<br> y = - 3x + 8
aliina [53]

x-2y = -2

x-2(-3x+8)=-2

mutiply the bracket by -2

(-2)(-3x)=6x

(-2)(8)=-16

x+6x-16=-2

7x-16=-2

move -16 to the other side

sign changes from -16 to +16

7x-16+16=-2+16

7x= -2+16

7x= 14

divide both sides by 7

7x/7=14/7

x=2

Find y by using the substitution method

y=-3x+8

y=-3(2)+8

-6+8

=2

Answer:(2,2)

6 0
3 years ago
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