4 years ago

Please answer 10 points !!!!!!

Mathematics

1 answer:

Ede4ka [16]4 years ago

8 0

Answer is........... x= 9168

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A contestant on a game show is given $100 and is asked five questions. The contestant loses $20 for every wrong answer. Sketch a

iren2701 [21]

Y-INT IS $100 since its the starting point. 20 is the slope so make graph counting by 20’s

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3 years ago

Read 2 more answers

A professor gives her 100 students an exam; scores are normally distributed. The section has an average exam score of 80 with a

frozen [14]

Answer:

6.18% of the class has an exam score of A- or higher.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

$\mu = 80, \sigma = 6.5$