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vredina [299]
3 years ago
9

At a coffee shop, the first 100 customers'

Mathematics
1 answer:
kogti [31]3 years ago
5 0

Answer:

5%

Step-by-step explanation:

5 + 48 + 22 + 8 + 12 + 5 = 100

5/75 = 0.066667 = 67%

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17+5 plz show communitive property
wariber [46]

Answer:

17+5=17+5

No matter what order you put them it will always be the same

5 0
2 years ago
Read 2 more answers
A physicist examines 25 water samples for nitrate concentration. The mean nitrate concentration for the sample data is 0.165 cc/
xz_007 [3.2K]

Answer:

The 80% confidence interval for the the population mean nitrate concentration is (0.144, 0.186).

Critical value t=1.318

Step-by-step explanation:

We have to calculate a 80% confidence interval for the mean.

The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.

The sample mean is M=0.165.

The sample size is N=25.

When σ is not known, s divided by the square root of N is used as an estimate of σM:

s_M=\dfrac{s}{\sqrt{N}}=\dfrac{0.078}{\sqrt{25}}=\dfrac{0.078}{5}=0.016

The degrees of freedom for this sample size are:

df=n-1=25-1=24

The t-value for a 80% confidence interval and 24 degrees of freedom is t=1.318.

The margin of error (MOE) can be calculated as:

MOE=t\cdot s_M=1.318 \cdot 0.016=0.021

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 0.165-0.021=0.144\\\\UL=M+t \cdot s_M = 0.165+0.021=0.186

The 80% confidence interval for the population mean nitrate concentration is (0.144, 0.186).

6 0
3 years ago
I need help please!:D
klasskru [66]

Answer:ion know

Step-by-step explanation:

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2 years ago
Whats greater 9.354 or 9.012
babymother [125]

Answer:

9.354

Step-by-step explanation:

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