All categories

3 years ago

What is the probability

Mathematics

1 answer:

gulaghasi [49]3 years ago

3 0

Answer: Last Option

$P=0.4125$

Step-by-step explanation:

In this case we have a uniform probability. In the graph the horizontal axis represents the possible values of the variable x and the vertical axis represents the probability P(x).

To calculate the probability that x is between 4.71 and 7.4 we calculate the area under the curve.

The horizontal length between 4.71 and 7.4 is:

$7.4-4.1 = 3.3$ .

Then notice that the vertical length in this interval is 0.125.

Then the area of a rectangle is:

$A = lw$

Where l is the length and w is the width.

In this case we have to:

$l = 3.3$

$w = 0.125$

$P = A = 3.3 * 0.125$

$P=0.4125$

You might be interested in

Official unemployment rates for the U.S. population are reported on a monthly basis by the Bureau of Labor Statistics. For the p

Kitty [74]

Step-by-step explanation:

Clearly, there is a common difference between the monthly employment rates:

8.7% - 8.9% = -0.2%

8.5% - 8.7% = -0.2%

8.3% - 8.5% = -0.2%

a) So, for every month x, the percentage will go down 0.2%, starting at 8.9%. So, we can make this equation:

y = -0.2x + 9.1, where x = 1 would be October 2011.

January 2013 is 16 months after October 2011, so:

y = -0.2(16) + 9.1

y = 5.9%

b) To find when the unemployment rate will be zero, we set the equation equal to zero:

0 = -0.2x + 9.1

-0.2x = -9.1

x = 45.5 months

So, rounding up, the U.S. would reach a zero unemployment rate in 46 months or around September 2014? Not completely sure.

5 0

3 years ago

Determine the best name for the quadrilateral

NemiM [27]

Answer:

this is a paralleogram

Step-by-step explanation:

8 0

4 years ago

Under social distancing and safe shopping restrictions, Krogers currently is allowing a density of 1 customer per 120 square

nlexa [21]

Answer:

1166.

Step-by-step explanation:

The total area of the shopping space is

$350*400=140000$

If 1 customer is allowed per every 120 square foot, then we can work out the maximum capacity by dividing the total.

$\frac{140000}{120}=1166.67$

As we can't have .67 of a customer, we need to round this value down to 1166 customers.

7 0

3 years ago

What is 30 more than a number?

scZoUnD [109]

Answer:

there are varous answer to this problem but the equation is 30+n

just plug in any number for n and add 30.

Ex:

n=30

30+30=60

Ex:

n = 40

30+40=70

Hoped that helped:P

4 0

2 years ago

In the 2000 summer Olympics, the women’s 400-meter freestyle winner took 4 minutes 4 seconds to swim her race. The 200-meter fre

joja [24]

Step-by-step explanation:

so, the 200m winner's average speed was

200m/(60+57)sec = 200/117 m/s

so, 400m with the same speed would need x seconds :

200x/117 = 400

200x = 400×117

x = 2×117 = 234 seconds = 3 minutes and 54 seconds

(after seeing that a minute has 60 seconds, and that then 234/60 = 3 and 54 remainder).

so, she would have reduced her time by 10 seconds (from 4 minutes 4 seconds down to 3 minutes 54 seconds = 4 + 6 = 10).

3 0

3 years ago