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2 years ago

Please help I’m strugglinggg Oml and this is due right now

Mathematics

1 answer:

lubasha [3.4K]2 years ago

6 0

Answer:

i dont understand thisssssssss im sorrrryy what is c(5)?????? huhhhhhhhhh

Step-by-step explanation:

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A survey among freshman at a certain university revealed that the number of hours spent studying before final exams was normally

patriot [66]

Answer: 0.0775

Step-by-step explanation:

Given : Mean : $\mu = 25$

Standard deviation : $\sigma =15$

Sample size : $n=36$

Since its normal distribution , then the formula to calculate the z-score is given by :-

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For x= 28.2 hours

$z=\dfrac{28.2-25}{\dfrac{15}{\sqrt{36}}}=1.28$

For x= 30 hours

$z=\dfrac{30-25}{\dfrac{15}{\sqrt{36}}}=2$

The P- value = $P(1.28$

$=P(z$

Hence, the probabiliy that the average time spent stydying for the sampe was between 28.2 and 30 hours = 0.0775

6 0

2 years ago

3250-1250=1500+2(1250-500) is this true

exis [7]

Answer:

Its false because

Step-by-step explanation:

3250-1250=1500+2.(1250-500)

2000 = 1500 + 2 . 750

2000 = 1500 + 1500

2000 != 3000

Obviously 2000 isnt the same of 3000

5 0

3 years ago

Read 2 more answers

Is ∞ the same as +∞?

dezoksy [38]

Answer:

infinity and positive infinity are the same

6 0

2 years ago

Read 2 more answers

The graph shows the height of a plant over a 2-month growth period. Calculate the rate of change per day.

Mkey [24]

Answer:

14/61 cm per day

Step-by-step explanation:

Use the slope formula $\frac{y_{2} - y_{1}}{x_{2} - x_{1}}$

Plug it in $\frac{16-2}{61-0}$

Simplify $\frac{14}{61}$

3 0

2 years ago

given two functions f and g, one way to obtain the real solution of equation f(x) = g(x) it to graph the equation y=f(x) and y=g

natulia [17]

Graph the function of (f - g)(x) and find the x-intercepts.

8 0

2 years ago