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4 years ago

6

School newspaper staff went to three different sports games to survey students on their favorite sport, and the results are show

n in the table below. Are these samples biased? Why or why not?

1 answer:

ycow [4]4 years ago

3 0

They are biased. No one picked random

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Can someone help me with this

CaHeK987 [17]

Answer:

19 m

Step-by-step explanation:

This is Geometric progression with

$\left \{ {{u_1=1,\: u_2 =2} \atop {u_n=2^{n-1}u_1} \right.$

Then the fomular of sum is

$S=u_1\frac{2^n-1}{2-1} =1\times(2^n-1)=2^n-1\\To\: save\: 1 \:million\: then \; our \:sum \: will \: be\: 1000000\\Hence,\\2^n-1=1000000\\2^n=1000001\\n=log_{2}{1000001}\approx19,9\\Thus, it\:would \;be \:19 \:months \:before\: we\: saved \:1000000 \:pounds$

5 0

4 years ago

a couple has narrowed down the choices of a name for their new baby to first names and middle names. how many different first-

emmainna [20.7K]

There are 28 ways in which a couple can choose the name of the baby for its name.

<h3>What is defined as the combination?</h3>

A combination is an algebraic technique for determining the number of possible arrangements in a set of items in which the order of the selection is irrelevant.
You can choose the items in just about any order in combinations. Permutations and combinations are often confused.

If we need to choose objects from two groups of x and n objects so that one object from each group is chosen, we can do so by calculating the combinations possible by:

= ˣC₁ × ⁿC₁

Let 'x' be the set of first name = 7

Let 'n' be the set of second name = 4

Putting the values in formula;

= ⁷C₁ × ⁴C₁

= 7 × 4

= 28

Thus, there are 28 ways in which a couple can choose the name of the baby for its name.

To know more about the combination, here

brainly.com/question/12725706

#SPJ9

The complete question is-

A couple has narrowed down the choices of a name for their new baby to 7 first names and 4 second names.

How many different first- and second-name arrangements are possible?

8 0

2 years ago

Lien buys a small bunch of daisies and a rose for her mother each time she visits. The daisies cost $4.49 and a rose costs $2.50

ladessa [460]

$34.95 would be the exact price for lien to buy his mom flowers 5 times

4 0

3 years ago

Read 2 more answers

Volunteers at Sam's school use some of the student council's savings for a special project. They buy 6 backpacks for $4 each and

kaheart [24]

Answer: changed by $48

Step-by-step explanation: 6 times $4 = $24 + $4 times 6 = $24 total= $48

Also $4 times 12 = $48

4 0

3 years ago

The number of boots that 25 students had in their homes in Florida were recorded

wolverine [178]

Answer:

Min = 0; Q₁ = 0; Median = 2; Q₃ = 2; Max = 8

Step-by-step explanation:

Assume that your sorted data are

0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 8

1. Minimum

Min = 0

2. Median

The median is the middle value in a sorted data set. There are 25 items, so the median is the 13th item.

Median = 2

3. First quartile

Q₁ is the median of the lower half of the data set.

The median of 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2 is 0.

Q₁ = 0

4. Third quartile

Q₃ is the median of the upper half of the data set.

The median of 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 8 is 3.

Q₃ = 3

5. Maximum

Max = 8

7 0

3 years ago