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3 years ago

The dimensions of a rectangular prism are given in inches.

Mathematics

1 answer:

I am Lyosha [343]3 years ago

3 0

Answer:

140.4 cubic inches

Step-by-step explanation:

x cubic inches = height · width · length

140.4 cubic inches = 6 in. · 2.6 in · 9 in.

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According to the empirical rule, if the data form a bell-shaped normal distribution, __________ of the observations will fall wi

Kaylis [27]

Answer:

95%

Step-by-step explanation:

The empirical rule states that if data follows normal distribution then the percentage of observations falls within one, two and three standard deviation around the mean are

i) 68% falls within one standard deviation

ii) 95% falls within two standard deviation

iii) 99.7% falls within three standard deviation.

Hence 95% of the observations will fall within two standard deviations around the mean if the data follows normal distribution.

5 0

4 years ago

What is the value of a? a.54 b.108 c.30 d.168

Sonbull [250]

I believe the answer is C

4 0

3 years ago

Read 2 more answers

Divide. 21,382.62 ÷ 10,000

kiruha [24]

The answer is: 2.138262

4 0

3 years ago

Read 2 more answers

A random sample of 130 students is chosen from a population of 4,500 students. The mean IQ in the sample is 120, with a standard

barxatty [35]

Answer:

$120-2.614\frac{5}{\sqrt{130}}=118.85$

$120+2.614\frac{5}{\sqrt{130}}=121.15$

Step-by-step explanation:

Information given

$\bar X= 120$ represent the sample mean

$\mu$ population mean (variable of interest)

s=5 represent the sample standard deviation

n=130 represent the sample size

For this case we can't set a margin of error just with a % since they not specify 1.13% respect to something for this case we can omit this value

Confidence interval

The confidence interval for the mean is given by the following formula:

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

The degrees of freedom are given by:

$df=n-1=130-1=129$

The Confidence level is 0.99 or 99%, the significance would be $\alpha=0.01$ and $\alpha/2 =0.005$ , and the critical value would be $t_{\alpha/2}=2.614$

And replacing we got:

$120-2.614\frac{5}{\sqrt{130}}=118.85$

$120+2.614\frac{5}{\sqrt{130}}=121.15$

3 0

3 years ago

Find the slope of a line that passes through each pair of points M(-2,3),N(7,-4)

yan [13]

-9/7

which would be -1 2/7, but slope is not done in mixed fractions.

3 0

3 years ago