This is a problem I really need help on please help so I actually have two lol put please help with 7 and 8

Find HY if YL=9. nobody has shown me how to do this the last two weeks

Alekssandra [29.7K]

Step-by-step explanation:

(a) Your computer may be programmed to allocate borderline cases to the

next group down, or the next group up; and it may or may not manage

to follow this rule consistently, depending on its handling of the numbers

involved. Following a rule which says 'move borderline cases to the next

group up', these are the five classifications.

(i) 1.0-1.2 1.2-1.4 1.4-1.6 1.6-1.8 1.8-2.0 2.0-2.2 2.2-2.4

6 6 4 8 4 3 4

2.4-2.6 2.6-2.8 2.8-3.0 3.0-3.2 3.2-3.4 3.4-3.6 3.6-3.8

6 3 2 2 0 1 1

(ii) 1.0-1.3 1.3-1.6 1.6-1.9 1.9-2.2 2.2-2.5

10 6 10 5 6

2.5-2.8 2.8-3.1 3.1-3.4 3.4-3.7

7 3 1 2

(iii) 0.8-1.1 1.1-1.4 1.4-1.7 1.7-2.0 2.0-2.3

2 10 6 10 7

2.3-2.6 2.6-2.9 2.9-3.2 3.2-3.5 3.5-3.8

6 4 3 1 1

(iv) 0.85-1.15 1.15-1.45 1.45-1.75 1.75-2.05 2.05-2.35

4 9 8 9 5

2.35-2.65 2.65-2.95 2.95-3.25 3.25-3.55 3.55-3.85

7 3 3 1 1

(V) 0.9-1.2 1.2-1.5 1.5-1.8 1.8-2.1 2.1-2.4

6 7 11 7 4

2.4-2.7 2.7-3.0 3.0-3.3 3.3-3.6 3.6-3.9

7 4 2 1 1

(b) Computer graphics: the diagrams are shown in Figures 1.9 to 1.11

5 0

3 years ago

Please help with 1 , and 2 I really don’t understand this!

elena-s [515]

1. B
2. A

hope this helped

6 0

3 years ago

Read 2 more answers

13. Interpret the phrase ""margin of sampling error is ±1 percentage point.""

Ulleksa [173]

Answer:

On this case a margin of error of $\pm 1 \%$ means that the true population proportion is 1% above or below the estimated proportion calculated from the sample. And this value helps in order to find the limits for a confidence interval with a confidence given.

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Solution to the problem

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

On this case a margin of error of $\pm 1 \%$ means that the true population proportion is 1% above or below the estimated proportion calculated from the sample. And this value helps in order to find the limits for a confidence interval with a confidence given.

4 0

3 years ago

A right triangle has two legs with measure of 12 inches and 15 inches. Find the length of the hypotenuse to the nearest tenth of

Len [333]

Answer:

19 inches

Step-by-step explanation:

12^2+15^2=c^2

c=19.2094

4 0

3 years ago

There is a bag filled with 2 blue, 4 red and 3 green marbles.

Lyrx [107]

Answer:

.753

Step-by-step explanation:

Let Ps = probability both marbles are the same color.

Let Pd = probability both marbles are a different color.

Pd = 1 -Ps

Let Pb = probability both marbles are blue

Let Pr = probability both marbles are red.

Let Pg = probability both marbles are green

Pb= 2/9 * 1/9 = 2/81

Pr= 4/9 * 3/9 = 12/81

Pg=.3/9 * 2/9= 6/81

Ps = Pb + Pr +Pg= 20/81

Pd =1-Ps= 61/81 = .753

Is this correct?

7 0

2 years ago