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Sauron [17]
2 years ago
10

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.6

1 and a standard deviation of 0.45
Using the empirical rule, whatpercentage of the students have grade point averages that are at least 3.96? Please do not round your answer
Mathematics
1 answer:
sergey [27]2 years ago
5 0

Answer:

Below.

= 99.7%

= 100 - 99.7%/2

= 0.3/2

= 0.15%

100% - 0.15%

= 99.85%

You might be interested in
What was the average speed if I drove 60 miles per hour to get to my grandmas house and 30 miles per hour to get home. Represent
siniylev [52]

Answer:

40 mph.

Step-by-step explanation:

Suppose grandma's house is  30 miles away (any distance would do but 30 is convenient).

Speed = distance / time

time = distance / speed

Time to get there =  30/60 = 1/2 hour.

Time to get back = 30/30 = 1 hour

Average speed  = total distance/ total time

=  (30 + 30) / ( 1 + 1/2)

= 60 / 1.5

=  40 miles per hour.

You cannot take the average of the speeds directly

(60+ 30)/2  = 45 is not correct as you cannot average ratios ( speed is a ratio).

8 0
2 years ago
Please help immediately again
timurjin [86]
132 because 11 times 4 times 3 is 132. Forget the 5 because the 11 and 5 is measuring basically the same thing.
3 0
3 years ago
The price of an item yesterday was $120 . Today, the price fell to $54 . Find the percentage decrease.
Nesterboy [21]

Answer:

magnitude of decrease = 120 - 54 = 66$

the percentage = (66/100)×100 = 66%

8 0
3 years ago
Explain how to modify the graphs of f(x) and g(x) to graph the solution set to the following system of inequalities. How can the
Norma-Jean [14]

The graphs of f(x) and g(x) are transformed function from the function y = x^2

The set of inequalities do not have a solution

<h3>How to modify the graphs</h3>

From the graph, we have:

f(x) = x^2 -3 and g(x) = -x^2 +2

To derive y < x^2 - 3, we simply change the equality sign in the function f(x) to less than.

To derive y > x^2 + 2, we perform the following transformation on the function g(x)

  • Shift the function g(x) down by 2 units
  • Reflect across the x-axis
  • Shift the function g(x) down by 3 units
  • Change the equality sign in the function g(x) to greater than

<h3>How to identify the solution set</h3>

The inequalities of the graphs become

y < x^2 - 3 and y > x^2 + 2

From the graph of the above inequalities (see attachment), we can see that the curves of the inequalities do not intersect.

Hence, the set of inequalities do not have a solution

Read more about inequalities at:

brainly.com/question/25275758

7 0
2 years ago
Find the difference of 25 and 0.88
Fed [463]

Answer:

24.12

Step-by-step explanation:

The term 'difference' implies subtraction.

25 - 0.88 = 24.12

4 0
3 years ago
Read 2 more answers
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