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Hitman42 [59]
3 years ago
5

A simple random sample of 50 undergraduates at Colby College found that 60% of those sampled felt that cheating was a problem am

ong college students. A simple random sample of 50 undergraduates at Penn State University found that 70% felt that was cheating a problem among college students. The number of undergraduates at Colby College is approximately 1800; the number at Penn State is approximately 39,000.We conclude that:_________.
A) the sample from Colby College has much less sampling variability than that from Penn State.
B) the sample from Colby College has much more sampling variability than that from Penn State.
C) the sample from Colby College has almost the same sampling variability as that from Penn State.
D) it is impossible to make any statements about the sampling variability of the two samples because the students surveyed were different.
Mathematics
1 answer:
sasho [114]3 years ago
7 0

Answer:

A

Step-by-step explanation:

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To train for an upcoming marathon, Alvin runs 9 miles a day. If Alvin runs 9 miles every day for 30 days, how many total miles w
nydimaria [60]

Answer:

Step-by-step explanation:

if he runs 9 miles a day for 30 days thats 9x30 its pretty simple math all you have to do is multiply it should be 270 miles in total. np abt the spammage

6 0
3 years ago
Read 2 more answers
A complex number, (a + bi), multiplied by (2 + 3i) and added to -i gives the product of (-11 + 5i) and (1 – i).
Novosadov [1.4K]
(a+bi)(2+3i)-i=(-11+5i)(1-i)
2a+3ai+2bi+3bi²-i=-11+11i+5i-5i²
2a+(3a+2b-1)i-3b=-11+16i+5
(2a-3b)+(3a+2b-1)i=-6+16i
Therefore; we have the next system of equations:
2a-3b=-6
3a+2b-1=16

Finally, the system of equations is:
2a-3b=-6
3a+2b=17
We can solve this system of equations by reduction method
 2(2a-3b=-6) 
 3(3a+2b=17)
----------------------
   13a=39  ⇒a=39/13=3

 3(2a-3b=-6)
-2(3a+2b=17)
----------------------
       -13b=-52   ⇒ b=52/13=4

Answer: a=3;    b=4

8 0
3 years ago
Read 2 more answers
Here is a rectangle of area 8sq. cm. a) Draw 2 straight lines in this rectangle to divide it into 1 rectangle and to equal trian
krek1111 [17]

Answer &

Step-by-step explanation:

Got it. Hope this will help.

5 0
3 years ago
A recipe for crumb cake says to mix 3/8 cup of brown sugar and 1/3 cup of white sugar. From this sugar mixture, set aside 1/4 cu
ch4aika [34]

brown sugar= \frac{3}{8}

white sugar= \frac{1}{3}

you need to mix brown sugar with white sugar

\frac{3}{8} + \frac{1}{3} = \frac{9+8}{24} = \frac{17}{24}

then it says you need to set aside 1/4 for the crumb topping from the previous sugar mixture that was  \frac{17}{24}, so

\frac{17}{24} - \frac{1}{4} = \frac{68-24}{96} = \frac{11}{24}

The sugar mixture used to make the cake is \frac{11}{24}

3 0
3 years ago
Please give answer ofHCF of 15 and 18​
lana66690 [7]

Answer: The prime factorization of 15 is: 3 x 5. The prime factorization of 18 is: 2 x 3 x 3. The prime factors and multiplicities 15 and 18 have in common are: 3. 3 is the gcf of 15 and 18.

Step-by-step explanation:

6 0
3 years ago
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