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3 years ago

Ten skeins of yarn will make 4 scarves. how many scarves can be made with 25 skeins of yarn?

1 answer:

8 0

If 10 skeins makes 4 scarves than if you multiply the skeins by 2 (20 skeins) it would make 8 scarves. There for dividing the skeins by 2 (5 skeins) it would make 2 scarves. So adding 20 skeins and 5 skeins you would get 10 scarves total

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You apply for a job and have to take a drug test. You are curious about the error rate for the test so you do some research. You

Ber [7]

Answer:

Test statistic Z = -1.0

|Z| = |-1.0| < 1.96 at 0.05 level of significance.

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

Step-by-step explanation:

Step(i):-

Given that the population proportion P = 14% =0.14

Given that the sample size 'n' = 382 tests

Given that find a study where 47 out of 382 test results using this test were wrong (either a false positive or a false negative).

Sample proportion

$p = \frac{x}{n} = \frac{47}{382} = 0.1230$

Null hypothesis: H₀ : P = 0.14

Alternative Hypothesis:H₁ : P≠ 0.14

Step(ii):-

Test statistic

$Z = \frac{p-P}{\sqrt{\frac{PQ}{n} } }$

$Z = \frac{0.1230-0.14}{\sqrt{\frac{0.14 X0.86}{382} } }$

Z = - 1.0

|Z| = |-1.0| < 1.96 at 0.05 level of significance.

Final answer:-

The null hypothesis is accepted

The company that produces the drug test claims that less than 14% of the test results are wrong

4 0

3 years ago

PLEASEEEE HELP ME

AURORKA [14]

Answer:

1- BE

2- CF

3 - AD

4 - B

5 -

6 - A

7- S

8- D

9- CDF / BDE

10 - C B A

11 - D

12 -DC / DF

7 0

3 years ago

While traveling in Canada, a police officer pulls you over for speeding. The posted speed limit is 100

torisob [31]

Answer:

Speeding at 160.934 km/hr

Step-by-step explanation:

1 mile = 1.609344 kilometers

1.609344 * 100 = 160.934 kilometers

8 0

3 years ago

Read 2 more answers

Ella owns 15% of Fitz Incorporated. The rest of the shares are owned equally by the remaining 5 shareholders. What percent of th

timurjin [86]

Answer:

17%

Step-by-step explanation:

The total corporation shares is 100%
If Ella owns 15% of Fitz,the remaining shares is 100-15=85%
If there are 5 shareholders and they all own equal shares,the percentage for each shareholder will be;85/5=17% each

5 0

2 years ago

Easy Area problem Need it fast

Gekata [30.6K]

Answer:

just subtract the area of the rectangle from the area of the carpet

fine I'll do it

Area of a rectangle= lb

Area of a square= a^2

Area of the remaining area= lb - a^2

= (12*4) - (2*2)

= 48-4

= 44 ft^2

5 0

3 years ago