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3 years ago

2. What are the ways that students might solve the problem?

Mathematics

1 answer:

Verizon [17]3 years ago

3 0

u dont use green lemon only yellow

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Problem PageQuestion Calcium levels in people are normally distributed with a mean of mg/dL and a standard deviation of mg/dL. I

SIZIF [17.4K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The calcium level that is the borderline between low calcium levels and those not considered low is $c = 8.68$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 9.5\ mg/dL$

The standard deviation $\sigma = 0.5 \ mg/dL$

The proportion of the population with low calcium level is $p =$ 5% = 0.05

Let X be a X random calcium level

Now the P(X < c) = 0.05

Here P denotes probability

c is population with calcium level at the borderline

Since the calcium level is normally distributed the z-value is evaluated as

$P(Z < \frac{c - \mu}{\sigma } ) = 0.05$

The critical value for 0.05 from the standard normal distribution table is

$t_{0.05} = -1.645$

=> $\frac{c - \mu}{\sigma } = -1.645$

substituting values

$\frac{c - 9.5}{0.5 } = -1.645$

=> $c - 9.5 = -0.8225$

=> $c = 8.68$

6 0

4 years ago

Bow is running a concession stand at a baseball game. He is selling nachos and water. Each other nachos cost $2.00, and a bottle

labwork [276]

The Solution:

From the graph, there is a point of intersection between the graphs of the two equations in the system. This implies that:

There is a viable solution to the given system of equations at the point where the two lines intersect, that is, at the point (26,34).

So, the correct answer is [option 3]

7 0

1 year ago

john paid $99 for one algebra book and two geometry book. the cost of a geometry book is $3 less than a algebra book. substituti

tia_tia [17]

Answer:

A=34, G=31

Step-by-step explanation:

G=A-3

2G+A=99

plug in for g 2(A-3)+A=99

distribute 2 A-3+A=99

combine like terms 3A-3=99

solve for a 3A=102 A=34

plug in a solve for g G=34-3 G=31

5 0

3 years ago

Nine fifths-three fifths

m_a_m_a [10]

Can you please explain what question you have?

7 0

3 years ago

Read 2 more answers

QUESTION 25 The area of the triangle shown is 54cm. The ratio of side to side is 3:4 What is the length of side in centimetres?

AlexFokin [52]

Answer:

Step-by-step explanation:

Diagram would be helpful.... I am assuming this is a right triangle with legs ratio 3:4

5 0

2 years ago