Ask question

Ask question

All categories

3 years ago

14

Jonathan and Tim want to predict how many quarters are in a large jar containing 120 coins. Jonathan randomly selects a sample o

f 10 coins from the jar, while Tim randomly selects a sample of 30 coins. Then they count the number of quarters in each sample. Whose sample should more accurately predict the number of quarters in the jar? sample should give a more accurate prediction of the number of quarters in the jar.

2 answers:

Anastaziya [24]3 years ago

8 0

the larger the sample the more accurate the prediction

so since Tim looked at a larger quantity of coins his would be more accurate

kozerog [31]3 years ago

7 0

Tim would give a sample that should more accurately predict the numbers in the jar. He has taken out 1/4 of the coins from the jar.

You might be interested in

Please help this is for a math test I don’t get this ????

Hatshy [7]

son 7 de largo como 2,3,4,5 y 6

5 0

3 years ago

Solve y^3+x^3=(y+x)(y^2-yx+x^2) if x=2 and y=8

Hitman42 [59]

Answer:

Step-by-step explanation:

8³+2³=(8+2)(8²-8(2)+2²)

512+8=(10)(64-16+4)

512+8=(10)(64-20)

512+8=(10)(44)

512+8=440

5 0

3 years ago

Which table shows a function that is decreasing only over the interval

joja [24]

Answer:

Table 4th is showing the function that is decreasing only over the interval

Step-by-step explanation:

We have been given four tables below:

To determine the function that is decreasing only in the given interval

$(-1,\infty)$

We will check the values after -1 in all four tables

The table in which values is only decreasing after -1 will be the table which shows a function is decreasing only.

In table 1 the value of x is increasing

In table 2 and 3 the value is increasing and then decreasing but we will consider only decreasing case

Therefore, Table 4th is correct.

8 0

3 years ago

Read 2 more answers

HELP ME!!! Answer in Scientific Notation and explain and show work.

umka21 [38]

Multiplying means you add the exponents and dividing means you subtract the exponents. Treat the decimals as you normally would.
$(4.3 \times {10}^{8} ) \times (2.0 \times {10}^{6} )$
$4.3 \times 2.0 = 8.6$
$8 + 6 = 14$
$8.6 \times {10}^{14}$

$(6 \times {10}^{3} ) \times (1.5 \times {10}^{ - 2} )$
$6 \times 1.5 = 9$
$3 + - 2 = 1$
$9 \times {10}^{1}$

$(1.5 \times {10}^{ - 2} ) \times (8.0 \times {10}^{ - 1} )$
$1.5 \times 8 = 12$
$- 2 + - 1 = - 3$
$12 \times {10}^{ - 3}$

$\frac{(7.8 \times {10}^{3}) }{(1.2 \times {10}^{4}) }$
$\frac{7.8}{1.2} = 6.5$
$3 - 4 = - 1$
$6.5 \times {10}^{ - 1}$

$\frac{(8.1 \times {10}^{ - 2} )}{(9.0 \times {10}^{2} )}$
$\frac{8.1}{9.0} = 0.9$
$- 2 - 2 = - 4$
$0.9 \times {10}^{ - 4}$

$\frac{6.48 \times {10}^{5} }{(2.4 \times {10}^{4} )(1.8 \times {10}^{ - 2}) }$
$2.4 \times 1.8 = 4.32$
$4 + - 2 = 2$
$\frac{6.48 \times {10}^{5} }{4.32 \times {10}^{2} }$
$\frac{6.48}{4.32} = 1.5$
$5 - 2 = 3$
$1.5 \times {10}^{3}$

7 0

3 years ago

Can some one give me a helping hand

kati45 [8]

There is one negative number. Do you think the answer is a negative, out of the answer choices they gave you? it could be a positive. I DON'T know the answer. This is just a tip for you

5 0

3 years ago