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barxatty [35]
3 years ago
7

WILL MARK BRAINLIEST Suppose an online auction website has roughly 500,000 users, and as each member signs up for an account, he

or she is assigned a number. Which of these would result in the largest sample size using systematic sampling?
A.Surveying every 5th numberB.Surveying every 500th numberC.Surveying every 50th numberD.Surveying every 5000th number
Mathematics
2 answers:
Rzqust [24]3 years ago
6 0

Answer: A. Surveying every 5th number

mrs_skeptik [129]3 years ago
3 0
Wheres the question can you be more pacific with it?
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In a survey four out of every five people prefer creamy more then crunchy peanut butter. If there are 120 people at the grocery
JulsSmile [24]

Answer:

150

Step-by-step explanation:

set up a equation-

4/5=120/x

x= people buying peanut butter.

120/4=30

30 x 5=150

3 0
3 years ago
A research team at Cornell University conducted a study showing that approximately 10% of all businessmen who wear ties wear the
LenKa [72]

Answer:

a) The probability that at least 5 ties are too tight is P=0.0432.

b) The probability that at most 12 ties are too tight is P=1.

Step-by-step explanation:

In this problem, we could represent the proabilities of this events with the Binomial distirbution, with parameter p=0.1 and sample size n=20.

a) We can express the probability that at least 5 ties are too tight as:

P(x\geq5)=1-\sum\limits^4_{k=0} {\frac{n!}{k!(n-k)!} p^k(1-p)^{n-k}}\\\\P(x\geq5)=1-(0.1216+0.2702+0.2852+0.1901+0.0898)\\\\P(x\geq5)=1-0.9568=0.0432

The probability that at least 5 ties are too tight is P=0.0432.

a) We can express the probability that at most 12 ties are too tight as:

P(x\leq 12)=\sum\limits^{12}_{k=0} {\frac{n!}{k!(n-k)!} p^k(1-p)^{n-k}}\\\\P(x\leq 12)=0.1216+0.2702+0.2852+0.1901+0.0898+0.0319+0.0089+0.0020+0.0004+0.0001+0.0000+0.0000+0.0000\\\\P(x\leq 12)=1

The probability that at most 12 ties are too tight is P=1.

5 0
3 years ago
Find the 12th term of the arithmetic sequence 2x + 8,6x + 5, 10x + 2, ...
lawyer [7]

Answer: The 12th term is 46x -25

Step-by-step explanation:

It is increasing by 4x and decreasing by 3 through each term, this represents the d. a1 has already been identified as 2x +8, so you just have to write down the formula and the solve form there by plugging in the 12 in (n-1) to find the answer.

8 0
3 years ago
Show how to use distributive property to rewrite and find (32x6)+(32x4)
Anna35 [415]
320 is the answer to this question
5 0
3 years ago
Write the difference as a mixed number.<br>3- 1 1/3<br><br>​
BigorU [14]

Answer:

11/3 as a mixed number would be 3 2/3

Step-by-step explanation:

6 0
3 years ago
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