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Burka [1]
3 years ago
9

Need help with this ASAP

Mathematics
2 answers:
faust18 [17]3 years ago
6 0
9 yards I’m sorry if it’s wrong
larisa [96]3 years ago
3 0

Answer:

I honestly think its 9 yards

Step-by-step explanation:

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Step-by-step explanation:

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A dieter believes that the average number of calories in a homemade peanut better cookie is more than the average number of calo
zalisa [80]

The confidence interval formula is computed by:

Xbar ± Z s/ sqrt (n)

Where:

Xbar is the mean

Z is the z value

S is the standard deviation

N is the number of samples

 

So our given are:

90% confidence interval with a z value of 1.645

Sample size 40, 45

Mean 180, 179

Standard deviation 2, 4

 

So plugging that information in the data will give us a confidence interval:

For 1:

Xbar ± Z s/ sqrt (n)

= 180 ± 1.645 (2 / sqrt (40))

= 180 ± 1.645 (0.316227766)

= 180 ± 0.520194675

= 179.48, 180.52

For 2:

Xbar ± Z s/ sqrt (n)

= 179 ± 1.645 (4 / sqrt (45))

<span>= 179 ± 1.645 (0.596284794)</span>

therefore, the answer is letter b

8 0
3 years ago
Iron has a density of 7.9 g/cm³. Gold has a density of 19.3 g/cm³.
alexandr402 [8]
Density = m/v
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= 19.3g/cm^3
therefore it is gold.
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2 years ago
What Is the sum of the measures in degrees of the interior angles of a 30-gon
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