One-hundred twelve square feet of carpet cost $ 368.48 . How much does each square foot cost

Mathematics

2 answers:

RideAnS [48]3 years ago

8 0

Hi,

$368.48 \div 112 = 3.29$

Each sq. ft costs 3.29$

Hope this helps.
r3t40

disa [49]3 years ago

8 0

so what you will do is you will take

368.48 and divide it by 12 and you should get 30.70667 which will round to 30.71

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irina [24]

51:75

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3 years ago

A department store has daily mean sales of $28,372.72. The standard deviation of sales is $2000. On Tuesday, the store sold

DiKsa [7]

Answer:

Tuesday z-score was 3.26.

Tuesday was a significantly good day.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

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.

A score is said to be significantly high if it has a z-score higher than 1.64, that is, it is at least in the 95th percentile.

In this problem, we have that:

$\mu = 28372.72, \sigma = 2000$