What is the sum of 10+20?

Take my last points lul

insens350 [35]

Answer:

Yes, please! Thanks!

Step-by-step explanation:

:)

5 0

3 years ago

Read 2 more answers

Answer ASAP please and thank you. Please give me the correct answer!! This is very important. I saw this question twice for brai

Papessa [141]

Answer:

B

Step-by-step explanation:

18+12=30

30X4=120

120/2=60

You need to add the bottom and the top of the trapezoid, times the height, and divided them by two.

7 0

3 years ago

Read 2 more answers

Please help me find the answer

agasfer [191]

Answer:

D natural, whole, integar, rational

8 0

3 years ago

The manager of a shopping mall distributed a customer-satisfaction survey by handing it to people as they came through one of th

Tresset [83]

Answer:

The correct option is D. No, because a random sample from all customers of the shopping mall was not selected

Step-by-step explanation:

In statistics, Bias can be described as a term which depicts error if a sample is not taken evenly or it depicts errors taken from an unjust sampling.

In statistics, sampling bias means the errors which occur if one part of the population is favoured more then the rest of the populations. In this kind of bias, the individuals for experimentation are not chosen randomly.

As the customer satisfaction survey was distributed in only one of the gates hence, it does not give a generalized result and the result is biased.

6 0

4 years ago

Read 2 more answers

Question: An airport deli sells turkey, ham, and roast beef sandwiches. A customer can choose between turkey,

Dmitry_Shevchenko [17]

Answer:

$\displaystyle \frac{1}{12}$ .

Step-by-step explanation:

Ginger selects the ingredients randomly. Therefore, the choices she makes would be independent. In other words, her choice of cheese (and mayonnaise) won't depend on what she chose for meat. Therefore:

$\begin{aligned}& P(\text{(roast beef) and (cheese) and (no mayonnaise)}) \\ &= P(\text{roast beef})\cdot P(\text{cheese}) \cdot P(\text{no mayonnaise})\end{aligned}$ .

It is worth noting that this equality would not be valid if the choices are not independent. For example, if Ginger is more likely to choose mayonnaise after choosing cheese, then $P(\text{(roast beef) and (cheese) and (no mayonnaise)})$ and $P(\text{roast beef})\cdot P(\text{cheese}) \cdot P(\text{no mayonnaise})$ would likely be different.

What is the probabilities that Ginger would select roast beef for the sandwich? The question states that Ginger is "equally likely" to select each of turkey, ham, and roast beef. In other words:

$P(\text{roast beef})= P(\text{turkey}) = P(\text{ham})$ .

At the same time, Ginger has to choose exactly one of these options. She can't choose no meat of more than one options at a time. Therefore:

$P(\text{roast beef})+ P(\text{turkey}) + P(\text{ham}) = 1$ .

Combine these two equations to conclude that:

$\displaystyle P(\text{roast beef}) = \frac{1}{3}$ .

Similarly, Ginger has to choose between cheese or no cheese, and mayonnaise or no mayonnaise. Therefore:

$\displaystyle P(\text{cheese}) = \frac{1}{2}$ .
$\displaystyle P(\text{mayonnaise}) = \frac{1}{2}$ .

Back to the probability for roast beef, cheese, and no mayonnaise:

$\begin{aligned}& P(\text{(roast beef) and (cheese) and (no mayonnaise)}) \\ &= P(\text{roast beef})\cdot P(\text{cheese}) \cdot P(\text{no mayonnaise}) \\ &= \frac{1}{3} \times \frac{1}{2} \times \frac{1}{2} \\ &= \frac{1}{12}\end{aligned}$ .

8 0

4 years ago