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Sergeu [11.5K]
3 years ago
12

jordan talks to his friends every 15 minutes during class.If the school day last for 6 1/4 hours, how many times will jordan tal

k to his friends​
Mathematics
1 answer:
kaheart [24]3 years ago
8 0
Answer: 25 times

Reason: He talks to them 4 times per hour. (6.25)(4) = 25
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Answer:

Part a:

"The unit has 7 or more rooms" in terms of X is given by the unit which has 7, 8, 9 or 10 rooms.

P{ X≥7}= 0.424

Part b:

The event {X > 7} in words is that the unit has more  than 7 rooms. .

Part C:

A continuous random variable  is given by intervals of numbers

A discrete random variable is the variable that is obtained by counting.

Step-by-step explanation:

Part a:

"The unit has 7 or more rooms" in terms of X is given by

{ X≥7} = {x=7} + {x=8} + {x=9} + {x=10}

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The probability of this event is given by

P{ X≥7} =P {x=7} + P {x=8} + P {x=9} + P {x=10}

P{ X≥7} = 0.198 + 0.149+ 0.053 + 0.024

P{ X≥7}= 0.424

Part b:

The event {X > 7} in words is that the unit has more  than 7 rooms. This does not include the unit having 7 rooms.

Part C:

A continuous random variable takes all the values in the given interval as in part a.The random variable X takes the values between 7 and 10 inclusive of 7.

A discrete random variable is the variable that is obtained by counting as in part b. The variable X takes the values of the units with 8 , 9 or 10 rooms.

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I think you forgot to mention Susan's current age if not:

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Write an equation of the line that passes through (-4, 1) and is parallel to the
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Answer:

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Step-by-step explanation:

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1=1

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