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Sloan [31]
3 years ago
8

Can someone hlpe with questions A and/or B please

Mathematics
1 answer:
pickupchik [31]3 years ago
5 0
Let sample in Texas be p1, Louisiana be p2.
Null Hypothesis: 
p1 - p2 = 0
Alternative Hypothesis: (This represents the claim)
p1- p2 < 0

To calculate test statistic, you need the pooled estimate which is a weighted average of the 2 sample proportions.
P = \frac{n_1 p_1 + n_2 p_2}{n_1 + n_2} = \frac{2000(.179+.265)}{2000+2000} = 0.222
Next get standard error:
SE = \sqrt{P(1-P)(\frac{1}{n_1} + \frac{1}{n_2})} = \sqrt{.222(1-.222)(\frac{1}{2000}+\frac{1}{2000})} = 0.01314
Calculate test statistic:
Z = \frac{p_1 - p_2}{SE} = \frac{.179 - .256}{.01314} = -5.86
To find p-value, look up Z-value in standard normal table.
Anything smaller than -3 or larger than 3, you can estimate to have
p-value = 0.

If p-value < alpha, Reject Null Hypothesis.
For this example, 0 < 0.05, therefore reject null hypothesis.

There is evidence to support claim that proportion of smokers in Texas is LESS than Louisiana.
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Solve five ninths minus two sixths equals blank.
larisa [96]

Answer:

6/3 I think so try c and if it’s not I’m not sure

Step-by-step explanation:

:)

6 0
3 years ago
Choose ALL possible answers
muminat
Select all the correct answers:
1) Yes

2) No
x=8→h(8)=2(8)^2+5(8)+2=2(64)+40+2=128+40+2→h(8)=170
x=8→f(8)=3^8+2=6,561+2→f(8)=5,563>170=h(8)

3) Yes

4) No

5) Yes
rg=[g(3)-g(2)]/(3-2)=[g(3)-g(2)]/1→rg=g(3)-g(2)
g(3)=20(3)+4=60+4→g(3)=64
g(2)=20(2)+4=40+4→g(2)=44
rg=64-44→rg=20

rf=f(3)-f(2)
f(3)=3^3+2=27+2→f(3)=29
f(2)=3^2+2=9+2→f(2)=11
rf=29-11→rf=18

rh=h(3)-h(2)
h(3)=2(3)^2+5(3)+2=2(9)+15+2=18+15+2→h(3)=35
h(2)=2(2)^2+5(2)+2=2(4)+10+2=8+10+2→h(2)=20
rh=35-20→rh=15

rg=20>18=rf
rg=20>15=rh

6)  No
x=4→g(4)=20(4)+4=80+4→g(4)=84
x=4→h(4)=2(4)^2+5(4)+2=2(16)+20+2=32+20+2→h(4)=54
x=4→f(4)=3^4+2=81+2→f(4)=83>54=h(4)
f(4)=83<84=g(4)
7 0
3 years ago
the age of biken is two times more than that of mousam. if the sum of their age is 30 years than find their difference age with
Pavlova-9 [17]

b = 2m \\ b + m = 30 \\ m = 10 \\ b = 20

7 0
2 years ago
18. Which function is the result of translating y = x^2 downward by 3 units and to the left by 4 units?
algol13

Answer:

C

Step-by-step explanation:

Given f(x) then f(x + k) represents a horizontal translation of f(x)

• If k > 0 then shift left by k units

• If k < 0 then shift right by k units

Here the shift is 4 units to the left, thus

y = (x + 4)²

Given f(x) then f(x) + k represents a vertical translation of f(x)

• If k > 0 then shift up by k units

• If k < 0 then shift down by k units

Here the shift is 3 units down, thus

y = (x + 4)² - 3 → C

6 0
3 years ago
What is the solution to the inequality? 6x−5&gt;−29 PLEASE HELP THIS IS URGENT!
jolli1 [7]

Answer:

x > - 4

Step-by-step explanation:

Given

6x - 5 > - 29 ( add 5 to both sides )

6x > - 24 ( divide both sides by 6 )

x > - 4

8 0
3 years ago
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