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Vedmedyk [2.9K]
3 years ago
10

My question is in the picture, pls help

Mathematics
1 answer:
Brums [2.3K]3 years ago
4 0

Answer: I'm pretty sure its term but i'm sorry if its not.

Step-by-step explanation:

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If the random variable X is normally distributed with a mean of 75 and a standard deviation of 8, then P(X ≥ 75) is:a. 0.500b. 0
drek231 [11]

Answer:

a. 0.5

Step-by-step explanation:

We know that X follows normal distribution with

mean=75

standard deviation=8

P(X\geq 75)=P(\frac{x-mean}{standard deviation}\geq \frac{75-75}{8})

P(X\geq 75)=P(Z\geq 0)

P(Z\geq 0)=P(0<Z<∞)

The area under the normal curve is 1 and the  (0<Z<∞) =0.5 and (-∞<Z<0) =0.5

So, P(0<Z<∞)=0.5

Hence the P(X ≥ 75)=0.5

5 0
4 years ago
On a chilly afternoon in New Jersey, the temperature was 4 degrees Fahrenheit. By nightfall, the temperature dropped 9 degrees F
Zarrin [17]

Answer:

negative 5

Step-by-step explanation:

4-9= -5

7 0
3 years ago
8. Archie plotted the points on the graph below to show how the amount he owes for tuition decreases as the number of tuition pa
emmainna [20.7K]

Answer:c

Step-by-step explanation:

5 0
3 years ago
How do I found a scale factor of a scale copy?
love history [14]

Answer:

first you have to look at one of the sides of the scaled copy. If they are divisible by the numbers in the original shape, then try and see if the others sides of the scaled copy are scaled by the same factor. If they are, then they are a scaled copy.

Step-by-step explanation:

6 0
3 years ago
A purse contains $2.45 in dimes and quarter. There are two more than twice as many dimes as quarters.How many of each coin on th
lozanna [386]

Answer:

5 quarters 12 dimes

Step-by-step explanation:

The quarters have to be a odd number or you wouldn't have the 5 at the end of the number. Because there are "two more then twice as many" dimes then quarters the number of quarters has to stay down. 3 to 5 is a good guess to start. from there you can add up the dimes until it all fits together

6 0
4 years ago
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