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3 years ago

I need help I dont know how to do it

Mathematics

1 answer:

Ganezh [65]3 years ago

3 0

Answer:

I put the answers in the picture below!

Step-by-step explanation:

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Goshia [24]

I would but I’m stuck on this problem too

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3 years ago

A dot plot titled Number of runs scored going from 0 to 5. 0 has 2 dots, 1 has 4 dots, 2 has 6 dots, 3 has 4 dots, 4 has 2 dots,

BaLLatris [955]

Answer:

abdef (those are the answers)

Step-by-step explanation:

6 0

3 years ago

Hey Guys Please???<br> I have a booklet to do and im failing my quiz<br> Thank so muchhhh

OlgaM077 [116]

Answer:

$47.92

Step-by-step explanation:

20% discount: $599 * 80% = $479.2 before tax

15% tax added: $479.2 + $71.88 = $551.08

Saved money: $599-$551.08= $47.92

6 0

2 years ago

A random sample of 10 parking meters in a beach community showed the following incomes for a day. Assume the incomes are normall

Vlad1618 [11]

Answer: (2.54,6.86)

Step-by-step explanation:

Given : A random sample of 10 parking meters in a beach community showed the following incomes for a day.

We assume the incomes are normally distributed.

Mean income : $\mu=\dfrac{\sum^{10}_{i=1}x_i}{n}=\dfrac{47}{10}=4.7$

Standard deviation : $\sigma=\sqrt{\dfrac{\sum^{10}_{i=1}{(x_i-\mu)^2}}{n}}$

$=\sqrt{\dfrac{(1.1)^2+(0.2)^2+(1.9)^2+(1.6)^2+(2.1)^2+(0.5)^2+(2.05)^2+(0.45)^2+(3.3)^2+(1.7)^2}{10}}$

$=\dfrac{30.265}{10}=3.0265$

The confidence interval for the population mean (for sample size <30) is given by :-

$\mu\ \pm t_{n-1, \alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given significance level : $\alpha=1-0.95=0.05$

Critical value : $t_{n-1,\alpha/2}=t_{9,0.025}=2.262$

We assume that the population is normally distributed.

Now, the 95% confidence interval for the true mean will be :-

$4.7\ \pm\ 2.262\times\dfrac{3.0265}{\sqrt{10}} \\\\\approx4.7\pm2.16=(4.7-2.16\ ,\ 4.7+2.16)=(2.54,\ 6.86)$

Hence, 95% confidence interval for the true mean= (2.54,6.86)

7 0

4 years ago

Maya solved an equation incorrectly, as shown below: Step 1: 4x = 28 Step 2: x = 28 – 4 Step 3: x = 24 Which statement best expl

sukhopar [10]

Maya has to divide by 4, not subtract 4 <span>C:She did not divide 28 by 4. </span>

7 0

3 years ago

Read 2 more answers

I need help I dont know how to do it​

I need help I dont know how to do it