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2 years ago

17 divided 8 times 5

Mathematics

2 answers:

Liula [17]2 years ago

8 0

Answer:

10.625

Step-by-step explanation:

17 divided by 8 = 2.125

2.125x5 = 10.625

Alina [70]2 years ago

3 0

Answer:

10.625

Step-by-step explanation:

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In analyzing the city and highway fuel efficiencies of many cars and trucks, the mean difference in fuel efficiencies for the 60

Olegator [25]

Answer:

$7.38-1.96\frac{2.51}{\sqrt{601}}=7.18$

$7.38+1.96\frac{2.51}{\sqrt{601}}=7.58$

For this case the confidence interval is given by :

$7.18 \leq \mu \leq 7.58$

Step-by-step explanation:

Data provided

$\bar X=7.38$ represent the sample mean for the fuel efficiencies

$\mu$ population mean

s=2.51 represent the sample standard deviation

n=601 represent the sample size

Confidence interval

The formula for the confidence interval of the true mean is given by:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom for this case is given by:

$df=n-1=601-1=600$

The Confidence level for this case is 0.95 or 95%, and the significance level $\alpha=0.05$ and $\alpha/2 =0.025$ and the critical value is given by $t_{\alpha/2}=1.96$

Replcing into the formula for the confidence interval is given by:

$7.38-1.96\frac{2.51}{\sqrt{601}}=7.18$

$7.38+1.96\frac{2.51}{\sqrt{601}}=7.58$

For this case the confidence interval is given by :

$7.18 \leq \mu \leq 7.58$

8 0

2 years ago

Suppose a population has a mean weight of 180 pounds and a standard deviation of 25 pounds. a sample of 100 items is drawn from

Angelina_Jolie [31]

Solution: We are given:

μ=180,σ=25,n=100

Therefore the standard error of the mean is

$\frac{standard deviation}{\sqrt{n}}$

$\frac{25}{\sqrt{100}}$

$2.5$

6 0

2 years ago

2. make sure you show all your work for full points. what is z?

LenKa [72]

Answer:

I don't understand what the means

7 0

1 year ago

10 points times quiz

Lyrx [107]

Answer:

Option 3 is right

Step-by-step explanation:

-2/3 = -.66

-3/5 = -.60

-1/2 = -.50

5/8 = .625

6 0

2 years ago

Read 2 more answers

Need help with theses plz

Sergeeva-Olga [200]

Answer:

7. x=19 2x=38

8.x=23 3x=69

9.x=12 (50-2)/4=12

10.x=15 (31-1)/2

11.x=16 (84-4)/5

12.x=27 (55-1)/2

Step-by-step explanation:

if 2 angles are opposite, it's the same

8 0

2 years ago