Evaluate the expression when b=2 . b⋅5 = Answer:

Mathematics

1 answer:

ddd [48]2 years ago

7 0

Answer:

$b*5 = 10$

Step-by-step explanation:

Given

$b = 2$

Required

Evaluate $b*5$

To do this, we simply substitute 2 for b in $b*5$

$b*5 = 2 * 5$

$b*5 = 10$

<em>The result of the expression is 10</em>

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The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 330 grams and a standard deviati

just olya [345]

Answer:

Weights of at least 340.1 are in the highest 20%.

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:

$\mu = 330, \sigma = 12$