Consider that I have 4 sections of Stat 200. Section 001 has 40 students, section 002 has 40 students, section 003 has 30 students, and section 004 has 40, for a total of 150 students. I'd like to do a satisfaction survey with a sample size of 30, but I suspect that the section may change students' satisfaction with the course. a. Which sampling techniques could I use to ensure I get a representative sample from each section? (Check the two best answers!) A. Systematic Sampling B. Cluster Sampling C. Simple Random Sampling D. Stratified Sampling

Answers

Answer 1

Answer:

Answer:

B. Cluster Sampling

D. Stratified Sampling

Step-by-step explanation:

B. Cluster Sampling: In cluster sampling, you divide your population (in this case, the students) into clusters (the sections) and randomly select some of those clusters for your sample. This method allows you to ensure representation from each section. You would randomly select a few sections (clusters) and survey all the students within those selected sections.

D. Stratified Sampling: In stratified sampling, you divide your population into subgroups (strata) based on certain characteristics (in this case, sections). Then, you randomly select samples from each subgroup in proportion to their size in the population. This ensures that each section is represented according to its proportion in the total population.

These methods will help you obtain a representative sample from each section while accounting for the different sizes of the sections in your Stat 200 course.

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A pencil box and a notebook together cost $6.28 the notebook cost $0.70 more than the pencil box . How much does the notebook cost?

Answers

The cost of notebook is $3.49.

What is a word problem?

A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.

For the given situation,

Let the cost of pencil box be x

Let the cost of notebook be y

Total cost = $6.28

⇒ $x+y = 6.28 ----- (1)$

The notebook cost $0.70 more than the pencil box,

⇒ $y=x+0.70 ----- (2)$

Now substitute equation 2 in equation 1,

⇒ $x+x+0.70=6.28$

⇒ $2x=6.28-0.70$

⇒ $x=(5.58)/(2)$

⇒ $x=2.79$

∴ $y=6.28-2.79$

⇒ $y=3.49$

Hence we can conclude that the cost of notebook is $3.49.

Learn more about word problems here

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Answer:

the note book costs $5.58

Step-by-step explanation:

you take 6.28 - 0.70

hope this helps ;)

The sum of -3/8 and 2 2/3

Answers

Answer:

27/24 or (Decimal: 2.291667)

Step-by-step explanation:

A box contains 15 cards. There are 5 red cards labeled 1, 2, 3, 4, and 5. There are 5 blue cards labeled 1, 2, 3, 4, and 5. There are 5 green cards labeled 1, 2, 3, 4, and 5. One card is drawn from the box.What is the probability that it is a blue card with an even number or a red card with an odd number?

A.1/3

B.1

C.2/5

D.6/225

Answers

The answer is (A) 1/3.

Should be A. 2 evenly numbered blue cards, plus 3 odd numbered red cards. Which makes 5/15, which then simplifies to 1/3.

Identify the domain of the equation y = x2 − 6x + 1.x ≤ 3

x ≥ −8

x ≥ −2

All real numbers

Answers

Find the domain by finding where the equation is defined. The range is the set of values that correspond with the domain...(I'm including the range..)

Domain:(-∞,∞),{x║x ∈ R}

Range:(-8,∞),{y║y≥-8}

The exchange rate is 1.02 Canadian dollars to 1US dollar as of May 12, 2015. If you have $10,000 US dollars to take to Canada with you. What is the equivalent value in Canadian dollars?

Answers

10,000 x 1.02 = 10,200

50% of all the cakes Lucy bakes that week were party cakes: one fifth were fruit cakes and the remainder were sponge cakes. What percentage of cakes were sponge cakes ?

Answers

50%=5/10 1/5=2/10 5/10+2/10=7/10 10/10-7/10=3/10 so 3/10 were sponge cakes

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