Please help me on this!! 11 points!!!

Mathematics

1 answer:

Marta_Voda [28]2 years ago

5 0

$\orange{\underline{\huge{\bold{\textit{\green{\bf{QUESTION}}}}}}}$

SIMPLIFY THE EXPRESSION $\blue{\frac{m^{ \frac{2}{3} } }{m {}^{ \frac{1}{5} } } }$

$\huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}$

$\pink{ \frac{m^{ \frac{2}{3} } }{m {}^{ \frac{1}{5} } }} \\ m^{ \frac{2}{3} - \frac{1}{5} } \\ m^{ \frac{(2 \times 5) - (1 \times 3)}{3 \times 5} } \\ m^{ \frac{10 - 3}{15} } \\ m^{ \frac{7}{15} }$

$\green{SECOND \: \: OPTION->}\purple{ m^{ \frac{7}{15} } }$

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A retail store did research and determined that, on average, each customer spends 40 minutes in their store per visit, with a st

Blababa [14]

Answer:

0.13% of customers spend more than 46 minutes

Step-by-step explanation:

Problems of normally distributed samples are 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.

In this problem, we have that:

$\mu = 40, \sigma = 2$