A cars tire pressure decreased by 0.098 of its original pressure write 0.098 as a percent

Mathematics

2 answers:

Anastasy [175]2 years ago

8 0

Answer would be 9.8% mate

balandron [24]2 years ago

5 0

To write this as a percent, just move the decimal two places to the right. So instead of .098, this becomes 9.8%. hope this helps!

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A principal believes 50% of her music students reported their practice hours accurately. Based on that assumption, she ran 200 s

Alex17521 [72]

Answer:

C. unlikely

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 probability is said to be extremely likely if it is 95% or higher, and extremely unlikely if it is 5% or lower. A probabilty higher than 50% and lower than 95% is said to be likely, and higher than 5% and lower than 50% is said to be unlikely.

In this problem, we have that:

$\mu = 0.48, \sigma = 0.18$