Which of the following expressions is equal to 8^8 × 8^-2

Mathematics

1 answer:

Bezzdna [24]2 years ago

8 0

Answer:

C because 8^ which 8 times 2 equals 16 16 times 6=96

Step-by-step explanation:

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A number greater than 18.55 and less than 18.6

yuradex [85]

18.56, 18.57, 18.58 or 18.59?

4 0

2 years ago

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According to the National Vital Statistics, full-term babies' birth weights are Normally distributed with a mean of 7.5 pounds a

Sav [38]

Answer:

68.26% probability that a randomly selected full-term pregnancy baby's birth weight is between 6.4 and 8.6 pounds

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:

$\mu = 7.5, \sigma = 1.1$