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telo118 [61]
4 years ago
7

The grades on a chemistry midterm at Springer are roughly symmetric with μ=67\mu = 67μ=67mu, equals, 67 and σ=2.0\sigma = 2.0σ=2

.0sigma, equals, 2, point, 0. William scored 66 on the exam. Find the z-score for William's exam grade. Round to two decimal places.
Mathematics
1 answer:
Lina20 [59]4 years ago
7 0

Answer: - 0.50

Step-by-step explanation:

Given the following :

Mean score = 67

Standard deviation = 2

To obtain the Zscore, use the relation:

Zscore = (X - mean) / standard deviation

Williams score = 66 = X

Hence,

Zscore = (66 - 67) / 2

Zscore = - 1 / 2

Zscore = - 0.50

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<h3>Answer:</h3>

42 ounces

<h3>Step-by-step explanation:</h3>

In this question, it is asking how many ounces of fiber did the Koala eat that day.

In order to solve this question, we would need to gather some important information from the question.

Important Information:

  • Koalas absorb only 25% of fiber they eat
  • Koala absorbed 10.5 ounces of fiber in 1 day

With the information above, we can solve the question.

We know that koalas only absorb 25% of fiber. We also know that a koala absorbed 10.5 ounces of fiber.

This means that the 10.5 ounces is 25% of fiber. This is 1/4 of the fiber it ate.

Now, we just need to find the other 3/4.

We could just multiply 10.5 by 4 to find how much fiber it ate that day.

10.5*4=42

When you multiply, you should get 42.

This means that the Koala ate 42 ounces of fiber that day.

<h3>I hope this helps you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
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