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marysya [2.9K]
3 years ago
11

Someone please help

Mathematics
1 answer:
VladimirAG [237]3 years ago
6 0
The top answer is correct.
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In a recent national survey, the mean price for a 2000 sq ft home in Florida is $240,000 with a standard deviation of $16,000. T
Doss [256]

Answer:

In both Florida and Ohio the house is 2.5 standard deviations from the mean.

Step-by-step explanation:

Z-score

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem:

The 200,000 house would be closer to the mean in the state in which the absolute value of the z-score is smaller.

Florida:

\mu = 240000, \sigma = 16000

So

Z = \frac{X - \mu}{\sigma}

Z = \frac{200000 - 240000}{16000}

Z = -2.5

In Florida, a home priced at $200,000 is 2.5 standard deviations from the mean.

Ohio:

\mu = 170000, \sigma = 12000

So

Z = \frac{X - \mu}{\sigma}

Z = \frac{200000 - 170000}{12000}

Z = 2.5

In Ohio, it is also 2.5 standard deviations from the mean.

In both Florida and Ohio the house is 2.5 standard deviations from the mean.

6 0
3 years ago
Evaluate the following expressions if a = 2, b = 3, x = 4, and y = 5.
AlekseyPX

Answer:

64

Step-by-step explanation:

Follow PEMDAS

4ab + y × a^3

4 (2) (3) + 5 × 2^3

4 (2) (3) + 5 × 8

24 + 5 × 8

24 + 40

64

8 0
3 years ago
Simplify complex fraction 3/4 + 1/3/1/6 + 3/4
Arturiano [62]
= (3/4 + 1/3)/(1/6 + 3/4)
= (3/4 + 1/3)/(1/6 + 3/4)
 Multiply numerator and denoiminator by 12
=12(3/4+1/3) / 12(1/6 + 3/4)
= (3*3 + 1*4) / (2 + 3*3)
= 13/11
6 0
4 years ago
Find the volume of the cone shown. Round your answer to the nearest hundredths.
olchik [2.2K]

Answer:

25.13 cm³

Step-by-step explanation:

Volume of a cone or pyramid is:

V = ⅓ A h

where A is the area of the base and h is the height.

V = ⅓ π r² h

V = ⅓ π (2 cm)² (6 cm)

V = 8π cm³

V ≈ 25.13 cm³

6 0
4 years ago
True or false? these numbers can be used to calculate the standard deviation of this distribution
lakkis [162]
The answer would be False
4 0
4 years ago
Read 2 more answers
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