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Alekssandra [29.7K]

2 years ago

13

What is the most common weight?" 10 points This dot plot shows the weights of backpacks, in kilograms, of 50 sixth-grade student

s at a school in New Zealand.

1 answer:

svetoff [14.1K]2 years ago

5 0

Answer:

4

Step-by-step explanation:

i think its correct

You might be interested in

. Ana tiene el triple de edad que su hijo Jaime. Dentro de 15 años, la edad de Ana será el doble que la de su hijo. ¿Cuántos año

poizon [28]

Answer:

La madre de Jaime tiene 30 años más que él.

Step-by-step explanation:

Llamemos x a la edad actual de Jaime, si la edad actual de Ana es el triple que la de Jaime, entonces la edad actual de Ana es 3x.

Dentro de 15 años, la edad de Jaime será x+15 (edad actual más 15 años) y usando el mismo razonamiento, la edad de Ana será 3x + 15.

Por otro lado el problema nos dice que dentro de 15 años, la edad de Ana (que ya sabemos que será 3x + 15) será igual al doble de la que tendrá su hijo en 15 años. Esto en forma de ecuación se representa:

$3x+15=2(x+15)$ (la edad de Ana será igual que el doble de la de su hijo)

Resolviendo la ecuación:

$3x+15= 2(x+15)\\3x+15=2x+30\\3x-2x=30-15\\x=15$

Por lo tanto, Jaime tiene 15 años y su madre tiene $3x=3(15)=45$ años. Por lo tanto la diferencia de edad es de 30 años y Ana tiene 30 años más que su Jaime.

3 0

2 years ago

The following table shows the amount of lemon flavor and water needed in four punch recipes. Punch Recipes Lemon flavor Water Re

Sauron [17]

Answer:

recipe 2

Step-by-step explanation:

4 0

2 years ago

Find the value of the test statistic z using . The claim is that the proportion of adults who smoked a cigarette in the past wee

kolezko [41]

Correct question is;

The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35, and the sample statistics include n = 1168 subjects with 385 saying that they smoked a cigarette in the past week. Find the value of the test statistic

Answer:

Test statistic is z = -1.46

Step-by-step explanation:

Let's first of all define the hypotheses:

Null hypothesis:

H0: p = 0.35, i.e 35% in the sample of 1,168 adults have smoked cigarettes in the previous week.

Alternative hypothesis:

Ha: p < 0.35, i.e less than 35% in the sample of 1,168 adults have smoked cigarette in the previous week.

The sample size is, n = 1,168 while the number of adults who smoked in the previous week would be; x = 385

Therefore, the sample proportion of adults who smoked in the previous week would be calculated as;

p^ = x/n = 385/1168 ≈ 0.3296

Now, from Central Limit Theorem for large samples, The sampling distribution of the sample proportion p^, will have a mean of μ = p = 0.35

Formula for standard deviation is;

σ = √[p (1 – p)/n]

σ = √(0.35 × (1 – 0.35)/1168)

σ = √0.0001947774

σ = 0.014

Formula for test statistic is;

z = (p^ - p)/σ

z = (0.3296 - 0.35)/0.014

z = - 1.46

3 0

3 years ago

Which of the following is true regarding ANOVA?

Nikitich [7]

Answer:

Option d) Both (a) and (c)

Step-by-step explanation:

ANOVA

It stands for analysis of variance
It is used to check difference in mean of three or more groups.
It can also be used to check the difference between mean of groups.
It can also be used to check the difference between medians of groups.
There are many types of ANOVA test: one way, two way, etc

Thus, the correct answer is

Option d) Both (a) and (c)

6 0

2 years ago

More points!!!!!111111

Orlov [11]

Answer:

Yes thank you

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers